Cited by 144Urban Agriculture and SustainabilityInnovations in Aquaponics and Hydroponics SystemsEnergy, Environment, Agriculture Analysis

How energy innovation in indoor vertical farming can improve food security, sustainability, and food safety?

Open access
Dafni Despoina Avgoustaki, George A Xydis·2020·Advances in Food Security and Sustainability

Abstract

Food safety is an important scientific field, but at the same time a discussion topic of modern society that occupies more and more space of our every day time, dealing with the preparation of food, with its nutritious value, and various transportation and storage ways aiming at preventing food-related sickness. This work compares traditional farming with greenhouses and indoor vertical farming focusing on the challenges and the opportunities for each category. The scope of this work was to stress the role of indoor vertical farming towards this direction. Indoor vertical farms can produce high quality and virus-free products that can be locally distributed, inside the urban environment that such investments take place, saving annually millions of tons CO2 emissions. Beyond that, in this work it was pointed out how energy plays a role in food safety in such systems. It was stressed that indoor vertical farms can act as a demand response aggregator. In large scale units it could play a role to adjust their production according to different electricity prices offered in different time zones throughout the day. This way, the owners under a multi-value business model will create the opportunity to the vertical farm owners not only to improve their production but at the same time absorb inexpensive electricity offered, by creating an additional profit mechanism (multiple revenue streams) under such an approach by entering into contracts with companies in a utility electric region.

Integrity signals

Registry

Crossref · 10.1016/bs.af2s.2020.08.002

Cites

45 of 45 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

16 of 105 cited sources checked · 2 supported · 0 flagged · accuracy not yet measured

  • Premisecitation

    Closed greenhouse systems achieve 10-50% better water use compared with open greenhouse systems.

    “achieve a 10–50% better water use compared with open greenhouse systems (Nederhoff and Stanghellini, 2010).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Nederhoff and Stanghellini, 2010

      The “Closed greenhouses” section says closed greenhouses can reduce product water use, but gives no 10–50% comparison with open greenhouses. The 10–50% figure appears in “Closed hydroponic systems” and compares closed with open hydroponic systems, not greenhouse structures (page numbers unavailable). (LLM, conf=0.90)

      Experimental — accuracy not yet measured
  • Premisecitation

    Agricultural land is projected to be converted to urbanization, energy production, or infrastructure growth.

    “according to Lotze-Campen et al. (2008), the land used for agriculture is projected to be transformed for other purposes such as urbanization, energy production, or infrastructure growth.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Lotze-Campen et al. (2008) source

      The section “Global land-use challenges in the 21st century” (p. 3) says land available for agriculture will be increasingly constrained by infrastructure, urbanization, and bio-energy production. It does not project that land already used for agriculture will be converted to those uses; the model’s described conversion runs from nonagricultural land to cropland (p. 10). (LLM, conf=0.85)

      Experimental — accuracy not yet measured
  • Premisecitation

    The wavelengths most important for photosynthesis, plant morphology, and flowering are in the visible 400-700 nm and infrared 700-800 nm ranges (Hogewoning et al., 2010; Kim et al., 2004; Lin et al., 2013; Liu et al., 2011).

    “the most important wavelengths for photosynthesis, morphology of plants and flowering are the wavelengths in the visible (400–700 nm) and the infrared (700–800 nm) spectrum.”
    Quote in the paperNot a substantial claim2 of 3 sources checked
    • cites Hogewoning et al., 2010 source

      The Introduction (page unavailable) identifies blue (400–500 nm) and red (600–700 nm) light as relevant to plant development and photosynthetic capacity. It does not establish that the entire visible and infrared ranges are the most important wavelengths, or address flowering or a 700–800 nm range. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
    • cites Kim et al., 2004 source

      The Introduction (p. 1617) identifies blue (400–500 nm) and red (600–700 nm) light as effective for crop biomass production, and the paper discusses photosynthesis under green light. It does not establish that the entire visible and infrared 700–800 nm ranges are the most important wavelengths for photosynthesis, plant morphology, and flowering; the infrared and flowering parts are unsupported. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
    • cites Lin et al., 2013 source
  • Premisecitation

    The marketable portion of plants can convert at most 1-2% of electrical energy into chemical energy.

    “the salable part of plants can only fix maximum 1–2% of the electrical energy as chemical energy.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Avgoustaki, 2019 source

      The Introduction (page unavailable) says plants use light, including artificial light, to produce chemical energy through photosynthesis. Section 2.3 measures electricity consumed per kilogram of basil leaf biomass, but neither passage establishes that the marketable portion converts at most 1–2% of electrical energy into chemical energy. (LLM, conf=0.76)

      Experimental — accuracy not yet measured
  • Premisecitation

    Greenhouses can be connected to renewable energy resources to improve their sustainability and energy efficiency (Manos and Xydis, 2019).

    “Greenhouses is a type of farming that can provide the option to connect with renewable energy resources in order to increase the sustainability of such systems and the energy efficiency of the various treatments that are necessary for mass food production (Manos and Xydis, 2019).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Manos and Xydis, 2019 source

      The indexed Abstract describes hydroponics as an alternative cultivation method and lists renewable energy as a keyword, but it does not discuss connecting greenhouses to renewable energy or the resulting effects on sustainability and energy efficiency. Searches for greenhouse energy use and renewable power found no passage addressing that claim. (LLM, conf=0.72)

      Experimental — accuracy not yet measured
  • Classified as probably not a substantial claim. 98
  • May combine two claims. 81
  • Not yet classified. 1
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    COVID-19 is estimated to have originated from a seafood market in Wuhan where wild animals were traded.

    “The disease is estimated to have originated from a seafood market in Wuhan where wild animals were traded such as marmots, bats, snakes and birds (Zhou et al., 2020).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Zhou et al., 2020 source

      The Main section (page not supplied) says the Wuhan outbreak started from a local seafood market and that most early cases had contact with it. It does not say wild animals were traded there or identify marmots, bats, snakes, and birds as market animals. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    COVID-19, caused by SARS-CoV-2, was initially reported in Hubei, Wuhan, China.

    “COVID-19 caused by virus SARS-CoV-2 that was initially reported in the province of Hubei, Wuhan in China.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Zhou et al., 2020 source
  • May combine two claims.

    Premisecitation

    Maintaining the same fertilizer and soil-preparation practices in conventional farming leads to low soil moisture and low conservation levels.

    “Scientific results (Pimentel et al., 2005) have shown that this maintenance of these practices lead to low soil moisture status and low conservation levels of conventional farming systems.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Pimentel et al., 2005 source

      The Results report significantly less soil water in the conventional system than in the organic legume system during the measured growing seasons. The Discussion also reports greater water conservation and less runoff in the organic systems. The paper does not establish that continuing the same fertilizer and soil-preparation practices caused those differences. (LLM, conf=0.85)

      Experimental — accuracy not yet measured
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    96% of COVID-19's genetic makeup matches a coronavirus found in bats.

    “According to Zhou et al., 2020, it is mentioned that 96% of the genetic makeup of COVID-19 is matched with the coronavirus found in bats.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Zhou et al., 2020 source
  • May combine two claims.

    Premisecitation

    Greenhouses yield 112 g fresh weight of romaine lettuce per m2 daily, whereas traditional farming yields 10 g per m2 per day (Penissi et al., 2019).

    “According to Penissi et al. (2019) greenhouses produce 112 g of fresh weight of romaine lettuce per m2 daily while traditional farming produce 10 g of fresh weight of romaine lettuce per m2 per day.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Penissi et al. (2019) source

      The Results and Discussion section reports approximately 115 g m−2 d−1 for lettuce in hydroponic greenhouses in Arizona, close to the claimed 112. It does not report 10 g m−2 d−1 for traditional farming or identify the comparison as romaine lettuce; the Methods identify the study's lettuce as ‘Gentilina.’ Page numbers are unavailable in our copy. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    In vertical farms, electricity cost is 25-30% of total cost, OPEX is 27%, and CAPEX is 18-20%.

    “Shamshiri et al. (2018), noted that three major operational expenses in a vertical farm are the electricity cost with 25–30% of the total cost, the operational costs (OPEX) with 27% of the total cost and the capital expenditures (CAPEX) with 18–20% of the total cost.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Shamshiri et al. (2018) source

      Section 5.3, “Opportunities and challenges” (page not provided), says vertical-farm establishment and operation are costly, with energy consumption accounting for much of the cost. It gives no cost breakdown supporting electricity at 25–30%, OPEX at 27%, or CAPEX at 18–20%; searches for those figures and terms found none. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Geo-helminth eggs can survive in soil for years under the right climate conditions, causing diarrheal diseases and permanent learning deficits in children.

    “A serious parasite that is worth to be mentioned is Geo-helminths (hookworm, Ascaris and whipworm), that can survive their eggs in soil for years when they find the right climate conditions, causing diarrheal diseases as well as permanent learning deficit to children (Hotez and Pecoul, 2010).”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites Hotez and Pecoul, 2010 source

      The “All NTDs are ‘tool deficient’” section identifies ascariasis, trichuriasis (whipworm infection), and hookworm infection as the three major soil-transmitted helminth infections. Our copy does not say their eggs survive in soil for years under suitable climatic conditions or that these infections cause diarrheal disease and permanent learning deficits in children; searches for egg survival and those outcomes found no supporting passage. Page numbers are unavailable in our copy. (LLM, conf=0.83)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    Every three days after harvest and root removal, products lose 30% of their nutritional value, so consumers receive severely reduced nutritional value.

    “According to Kublic et al. (2015), every three days, products lose 30% of their nutritious value after being harvested and roots' removal, meaning that consumers finally receive severely influenced vegetables in terms of nutritional value.”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites Kublic et al. (2015) source

      The Results and Discussion passages address lettuce production, energy use, water use, and possible reductions in food-travel distance, not postharvest nutritional loss. Searches for a 30% loss every three days and for nutritional changes after harvest or root removal found no supporting passage in our copy. (LLM, conf=0.75)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Findingreasoning

    Based on Tables 1-3, relative production capacity per land area in a 10-layer indoor vertical farm is 76-116 times higher than traditional farming and 40-80 times higher than greenhouse production.

    “It could be concluded (from Table 3) in comparison to Table 1, that the relative production capacity per land area unit in an indoor vertical farm of 10 layers is 76 to 116 times higher compared to traditional farming and 40 to 80 times higher compared to greenhouse production.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingreasoning

    The land area required for 1 kg of fresh romaine lettuce per day in an indoor vertical farm is 0.3 m2, about 97% less than greenhouses and 100% less than traditional farming.

    “Based on Table 1, Table 2, Table 3, it can be retrieved that the land use efficiency of indoor vertical farms (0.3 m2) required for obtaining 1 kg of fresh romaine lettuce per day is almost 97% reduced compared to greenhouses and 100% compared to traditional farming.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Interpretationreasoning

    Population growth implies a significant increase in required food production, raising concerns about future food deficiency, quantity, and quality.

    “Such population increase certainly indicates a significant rise in the required food production, raising concerns on the deficiency, the quantity, and the quality of future food products.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    Hydroponics, with their closed or semi-closed loops, are more water-efficient and sustainable than traditional farming, where much water drains below the root zone.

    “the close or semi-closed loop of hydroponics categorizes them as more efficient in terms of sustainability process for water efficiency in comparison with traditional farming where most of the water is drained to lower levels of soil that plants cannot access.”
    Quote in the paperNot a substantial claim
    • Rests on an assumption: Traditional farming experiences large resource and water waste due to soil degradation and eutrophication.
    • Rests on an assumption: Excess phosphates and nitrates in soil cause nutrient runoff and leaching in traditional agriculture.
  • Classified as probably not a substantial claim.

    Premisecitation

    The global population is expected to reach 9.8 billion by 2050, an increase of 2.4 billion people needing food.

    “By 2050, it is expected that the global population will reach the 9.8 billion people, 2.4 billion people more that need to be fed (United Nations, Department of Economic and Social Affairs, 2015).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites United Nations, Department of Economic and Social Affairs, 2015

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationreasoning

    Large-scale indoor vertical farms could adjust production according to time-varying electricity prices across the day.

    “In large scale units it could play a role to adjust their production according to different electricity prices offered in different time zones throughout the day.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Today's farmlands occupy almost 50% of global habitable land.

    “Today's farmlands, occupy almost 50% of the global habitable land (ourworldindata.org).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites ourworldindata.org

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Interpretationnone given

    Indoor vertical farms can produce high-quality, virus-free crops that can be distributed locally within the urban area where they are located, reducing annual CO2 emissions by millions of tons.

    “Indoor vertical farms can produce high quality and virus-free products that can be locally distributed, inside the urban environment that such investments take place, saving annually millions of tons CO2 emissions.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Water-filled plastic bags and ground tubes used for greenhouse heating absorb solar radiation during the day and release stored heat at night (Sethi and Sharma, 2008).

    “During daytime, this system absorbs and traps the solar irradiation and during nighttime, the stored heat is transferred in the interior of the greenhouse by releasing heat (Sethi and Sharma, 2008).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Sethi and Sharma, 2008 source
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationreasoning

    Indoor vertical farms can function as demand response aggregators.

    “It was stressed that indoor vertical farms can act as a demand response aggregator.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    Hydroponic plants develop smaller root systems and can allocate more energy to leaf and stem growth.

    “plants grown in hydroponics form smaller root system and can divert more energy for growing their leaves and stems.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    Energy use in outdoor farming is mainly fossil fuels for soil plowing, sowing, fertilization, harvesting, and pumping; pumping can reach up to 20% of total fossil fuel usage in developed countries.

    “The energy use in outdoor farming is mainly linked to fossil fuels for operations such as soil plowing, sowing, fertilization, harvesting etc. Additionally, further electricity is required for pumping (water irrigation), which in developed countries can reach up to 20% of the total fossil fuel usage (Despommier, 2010).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Despommier, 2010 source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    COVID-19 caused deaths and lockdowns and is expected to cost trillions of dollars in the global economy during 2020 and beyond.

    “The uncertainty that is caused globally via COVID-19 has caused apart from multiple deaths and lockdowns to most of the European countries, will affect significantly the economy and will cost trillions of dollars in the global economy, during 2020 and beyond (UNCTAD, 2020).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites UNCTAD, 2020

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    Optimal irrigation planning and frequent maintenance of irrigation systems can positively influence system efficiency.

    “management actions such as optimal irrigation planning and frequent maintenance irrigation system scheduled maintenance can also influence positively the system's efficiency (Wheeler et al., 2015).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Wheeler et al., 2015 source
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Global water use for food production reaches 5400 km3 and is increasing rapidly.

    “Based on Nederhoff and Stanghellini (2010), the water use for the global food production reaches at 5400 km3 and has a rapid increasing rate.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Nederhoff and Stanghellini (2010)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Interpretationreasoning

    If growers control humidity and irradiation at optimal levels for each crop, transpiration per m2 is reduced, leading to lower water usage and better water efficiency.

    “If growers manage to control these two factors in the optimal levels for each crop, then there is reduced transpiration level per m2, which means lower water usage and therefore better water efficiency.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Higher humidity inside a greenhouse lowers transpiration levels.
  • May combine two claims.

    Premisecitation

    Food from conventional farming uses 4 to 17 times more fuel and emits 5 to 17 times more CO2 than locally grown food.

    “a study conducted by Jill (2008), mentioned that food sourced from conventional farming uses 4 to 17 times more fuel compared to locally grown food and emits 5 to 17 times more CO2.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Jill (2008)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    Vertical farms are located in completely isolated spaces from the outdoor environment with thermally insulated installations and airtight structures, allowing control of temperature, humidity, and CO2.

    “Vertical farms are located in completely isolated spaces from outdoor environment with thermally insulated installations (especially when at the top floor of the building) and airtight structures that give the opportunity to the farmers to control the environment in terms of temperature, humidity and CO2 (Avgoustaki and Xydis, 2019).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Avgoustaki and Xydis, 2019

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    In the US, there are annually 48 million foodborne illnesses, 128,000 hospitalizations, and 3,000 deaths.

    “Only in the US, despite the attempts to provide a safe food supply, every year are recorded 48 million foodborne illnesses, 128,000 hospitalizations and 3000 deaths (CDC, 2013).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites CDC, 2013

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Classified as probably not a substantial claim. May combine two claims.

    Interpretationreasoning

    Vertical farms may increase productivity in highly urbanized areas, leading to improvements in community food security.

    “Meanwhile, vertical farms may be able to increase the productivity rate in highly urbanized areas that can lead to improvements in the food security of the community.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Interpretationreasoning

    Under a multi-value business model, vertical farm owners can improve production while absorbing inexpensive electricity and creating additional revenue streams by contracting with utility electric companies.

    “This way, the owners under a multi-value business model will create the opportunity to the vertical farm owners not only to improve their production but at the same time absorb inexpensive electricity offered, by creating an additional profit mechanism (multiple revenue streams) under such an approach by entering into contracts with companies in a utility electric”
    Quote in the paperNot a substantial claim
  • Not yet classified.

    Interpretation

    Because hydroponic roots are smaller, more plants can be grown in the same area and harvest quantities can be higher than in outdoor farming.

    “smaller root allows more plants in the same area to be grown and harvest higher quantities in comparison to the outdoor farming.”
    Quote in the paperNot yet classified
  • May combine two claims.

    Premisereasoning

    Top-only lighting can cause uneven light distribution, shading in dense crops, and senescence of lower leaves.

    “Traditional lighting that is located only on top of the crop can cause undesirable shading in dense crops by uneven light distribution and lead to senescence of the leaves that are in lower levels.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    Interplant lighting can increase light access to lower plant levels, improve light distribution, and raise crop photosynthetic rate.

    “According to Dueck et al. (2006), the photosynthetic rate of leaves in low levels is usually negative or nearly zero, but the application of interplant light can increase it in positive values.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Dueck et al. (2006) source
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

    Interpretationreasoning

    The thermal insulation and airtightness of vertical farms allow them to shield crops from outdoor climate and maintain desired indoor conditions without thermal losses.

    “This characteristic makes the farms capable to totally protect the inside crops from the outdoor climatic conditions and make them able to maintain the indoor conditions to the desired levels without having thermal losses.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    The payback period exceeded 20 years and net present value was negative unless the wholesale price of greens rose to at least 10.37 €/kg.

    “the payback period was calculated much longer than the operational period of the 20 years resulting in negative prices of the Net Present Value (NPV), unless the wholesale price of greens increases to 10.37 €/kg or more.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Avgoustaki and Xydis (2020)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Interpretationreasoning

    Heat and energy loss is a common greenhouse and artificial-lighting problem, and artificial lighting can reduce these losses while adding value to lighting.

    “Heat and energy loss is a common issue in greenhouse and artificial lighting. The latter can become an effective solution that mitigates these losses and add an additional value on the required lighting solutions.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisereasoning

    Interplant lighting, upward lighting, and reflectors are simple techniques that can be applied to improve light conversion.

    “A simple technique that can be followed is the application of interplant lighting, upward lighting, and use of reflectors (Fig. 3 ).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationcitation

    The potential earnings or savings from demand response depend on indoor farm size and create multiple revenue streams.

    “The opportunity to earn (or at least save) significant amounts will or course be related to the size of the indoor farms and create multiple revenue streams.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: Selecting inexpensive electricity hours for lighting and dark expensive hours has no significant impact on plant growth and development.
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Sunlight supplies the full spectrum of wavelengths, with 97% falling between 280 and 2800 nm (Kozai et al., 2016).

    “Sunlight is a free resource input that provides plants the whole spectrum of several wavelengths, 97% of it is within the range of 280-2800 nm (Kozai et al., 2016).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Kozai et al., 2016

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    An airtightness level no higher than 0.02 h−1 reduces CO2 loss to the outside and helps maintain sanitation by blocking pathogens, bacteria, dust, and insects.

    “It is also pointed out in this research, that the airtightness level of vertical farms should not exceed the 0.02 h− 1. This is suggested because this level of airtightness helps to reduce the CO2 losses to the outside environment and at the same time to maintain the sanitize level inside the farm by preventing pathogens, bacteria, dust or insects to enter the area of cultivation.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Kozai et al., 2016

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    Renewable energy sources are available worldwide and can allow greenhouse production to be more sustainable, economical, and cost-efficient (Xydis, 2015a).

    “Different types of renewable energy sources such as solar, wind, geothermal, hydroelectric, biofuels, biomass etc., are found all over the world bringing the possibility to greenhouse plants to produce yields under a more sustainable, economical and cost-efficient way (Xydis, 2015a).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Xydis, 2015a

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisereasoning

    Limiting the culture period, increasing the cultivation area ratio, and increasing the salable plant portion can increase relative annual production capacity per land area in indoor vertical farms.

    “Finally, other factors that can also help in increasing the relative annual production capacity (per unit land area) of indoor vertical farms are:•Limitation of the culture period between transplanting and harvesting by optimal monitoring and controlling of the environmental conditions•Increase of the ratio of cultivation area under each farming type (field, tier, floor, culture bed)•Increase of”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    This CUE difference is explained by CO2 release to the outside increasing with airtightness and with the inside-outside CO2 concentration difference.

    “This phenomenon can be explained because of the amount of CO2 that is released to the outside area from the culture room and keeps increasing with the level of airtightness but also with the difference between the CO2 levels inside and outside.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Premisecitation

    Indoor vertical farms generally achieve CO2 use efficiency of 0.87-0.89 at airtightness of 0.01-0.02 h−1 and CO2 around 1000 ppm, while greenhouses achieve about 0.5 CUE with closed ventilation, airtightness of 0.01 h−1, and CO2 at 700 ppm (Yoshinaga et al., 2000).

    “In general, CO2 use efficiency in indoor vertical farms is around 0.87–0.89 (when the level of airtightness is between 0.01 and 0.02 h− 1) and the concertation is around 1000 ppm—unlike greenhouses which achieve approximately a 0.5 CUE with closed ventilation system and airtightness level of 0.01 h− 1 and CO2 concentration level at 700 ppm (Yoshinaga et al., 2000).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Yoshinaga et al., 2000 source
  • May combine two claims.

    Premisecitation

    Soil-based crops have labor costs of 34,000 €/ha, whereas hydroponic greenhouses or indoor vertical farms need about 64,000 €/ha in production costs.

    “More analytically, according to Savvas et al. (2015), in soil-based crops the labor numbers 34,000 €/ha while a hydroponic greenhouse or indoor vertical farm requires around 64,000 €/ha as production cost.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Savvas et al. (2015)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    According to the WHO, more than half of farms globally still use raw animal waste for fertilization, which can attract insects, contain weed seeds or diseases, and contaminate crops.

    “According to World Health Organization, more than half of the farms globally, still use for fertilization purposes of their crops raw animal waste that can attract insect as flies or contain weed seeds or even diseases which can contaminate the cultivated crops.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites World Health Organization

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    Energy use represents a major expense for indoor vertical farms and can serve as an indicator of their sustainability.

    “Indeed, energy consumption is a significant cost of indoor vertical farms and can be used as an measure for their sustainability levels.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisereasoning

    Food safety rules require control and validation of agricultural water, including testing irrigation water, hand-washing water, ice, and food-contact surfaces.

    “It is of significant importance the control and validation of the agricultural water. To be more specific, there are rules that prerequisite the testing of the water quality that is applied via irrigation to the crops, but also the water related to the tangential purposes such as hand-washing of the workers during or after harvest, the ice that refrigerates food and the surfaces that food contacts”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Premisenone given

    Food usually travels thousands of miles daily, creating contamination threats; it can be infected in one country and develop pollutant populations in another.

    “Food usually travels thousands of miles every day leaving huge possibilities for contamination threats as it can be infected in one country and develop pollutant populations in another.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    Indoor vertical farms have higher purchased energy demand than greenhouses but significantly higher energy efficiency.

    “Even if the demand for purchased energy is much higher in indoor vertical farms than in greenhouses, the energy efficiency of the former is significantly higher (Graamans et al., 2017).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Graamans et al., 2017 source
  • Classified as probably not a substantial claim. May combine two claims.

    Premisereasoning

    Open-field crops face severe weather conditions and infection from various insects and pathogens.

    “However, because of its nature, crops growing in the open field are facing all the difficulties from severe weather conditions and the danger of infection from various insects and pathogens.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisenone given

    Food safety rules concern compliance of domestic and wild animals whether they work on, invade, or graze on the farm.

    “There are rules concerning the compliance of domestic and wild animals either they are working in the farm, invade in the farm or graze.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    In indoor vertical farm electricity demand, lighting accounts for about 80% of annual electricity use (assuming 40 W fluorescent lamps), air conditioning about 16%, and auxiliary equipment about 4%.

    “If we focus only in the electricity cost demand of indoor vertical farms, lighting accounts to approx. 80% of the annual electricity energy use (assuming fluorescent lamps of 40 W), while the electricity cost demand for air conditioning is around 16% and 4% the electricity demand of the auxiliary electrical equipment (Kozai et al., 2016).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Kozai et al., 2016

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Interpretationreasoning

    These fertilization techniques can highly affect human health and cause diseases.

    “Subsequently, these techniques can highly affect people's health and can cause diseases.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    In the United States, the CDC estimates about 48 million food poisoning cases each year, or one in six people.

    “According to the Centers for Disease Control and Prevention, each year, “roughly 48 million people (1 in 6)” are food poisoned in the United States.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Centers for Disease Control and Prevention

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    About 0.18 workers are needed for every 10,000 kg of yield, which accounts for 35% of yearly operational expenses depending on local labor cost.

    “Avgoustaki and Xydis (2020), propose that 0.18 workers are necessary per 10,000 kg of yield, resulting in 35% of the annual operational expenses of the farm (depending on the labor cost in each country).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Avgoustaki and Xydis (2020)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisenone given

    Fertilizer use efficiency of greenhouses and traditional fields is relatively low and can occasionally cause surface salt accumulation in soil.

    “On the contrary, the fertilizer use efficiency of greenhouses and of fields in traditional farming is relatively low and occasionally can cause on the soil, surface salt accumulation.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Premisereasoning

    In traditional farming, many plant pathogens, bacteria, and insect pests can damage crops, leading to large global production losses.

    “Traditional farming is a type of agriculture that allows to multiple plant pathogens, bacteria and insect pests to affect crops, causing scalable losses in global crop production.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    For lettuce heads and other leafy greens, indoor vertical farms can match traditional farming yields using just 1% of the land, and greenhouse yields using 10%.

    “According to Kozai et al. (2016), it is stated that indoor vertical farms can produce the same yield of lettuce heads and other leafy greens in only 1% of the land required by traditional farming and 10% compared to a greenhouse construction.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Kozai et al. (2016)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    Bio-waste collected and used in indoor vertical farms can be 2443 metric tons per year, with daily plant wastes of roughly 8.11 tons.

    “Based on Adenaeuer (2014), the bio-waste that is collected and used in indoor vertical farms can be 2443 metric tons per year and with daily plant wastes that are collected for the indoor farms of roughly 8.11 tons.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Adenaeuer (2014)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    In the examined case, indoor vertical farm capital expenditures reached 321,763 € per grow unit, with lamps and their connections, growing unit racks, and electrical distribution being the most costly equipment.

    “However, the biggest cost of indoor vertical farms noticed were the capital expenditures reaching at 321,763 € per grow unit, with the most costly equipment the lamps and integral connection of lamps, installation of growing unit racks and the electric distribution of electricity.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Avgoustaki and Xydis (2020)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisereasoning

    To meet increased food demand, 70% more nutritious and fresh food must be produced.

    “In order all this increased food demand to be met, it is necessary to produce 70% more nutritious and fresh food.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    E. coli infected approximately 265,000 people and caused about 100 deaths after severe pollution of agricultural water reservoirs in California farms.

    “E.coli was a foodborne illness that took high publicity after infecting approximately 265,000 people and causing about 100 deaths, after severe pollution of agricultural water reservoirs in farms of California.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    In an examined case, an indoor vertical farm can annually harvest 33,750 kg of fresh greeneries, a massive increase compared with greenhouses.

    “An interesting point is the massively increased production yield that can be achieved in an indoor vertical farm compared to greenhouses, reaching at 33,750 kg of fresh greeneries being annually harvested.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Avgoustaki and Xydis (2020)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisereasoning

    Hydroponic greenhouses with semi-closed or closed loops that circulate, recycle, and reuse water must include filtering treatments to remove pathogens before re-applying it.

    “Furthermore, greenhouses that apply hydroponic solutions in semi-close or closed loops that circulate, recycle and reuse water, have to include filtering treatments that remove possible pathogens before re-applying it.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Indoor micro-farms can be very costly, but multiple marketing strategies can optimize results.

    “On the other hand, based on a report conducted by Agrilyst (2017) indoor micro-farms can be very costly, nevertheless, there are multiple marketing strategies for optimizing the results.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Agrilyst (2017)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisenone given

    Groceries require on average 2000 to 3500 km to travel from processing facilities to market shelves, resulting in 4-6 days of transportation.

    “In order groceries to arrive from the processing facilities to the shelves of the markets, they require on average 2000 to 3500 km, resulting to 4–6 days in transportation.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisenone given

    Heavy tillage, severe irrigation, and monocropping seriously affect soil, deplete its nutrients, and require additional nutrient solutions.

    “After heavily tilled farming applications, severe irrigations and monocropped selections, soil has been seriously affected causing depletion of its nutrients, highly requiring additional nutrient solutions that can improve its fertile condition, making it appropriate for cultivation.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationreasoning

    Food safety regulations have become stricter by establishing new standards for food production (Produce Rules) because of high risk of infection even from more controlled agricultural systems.

    “Because of the high risk of infection of consumers, even from more controlled agricultural systems (compared to outdoor farming), regulations for food safety have become stricter by establishing new standards for food production (Produce Rules).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    The yield increase between indoor vertical farms and traditional farming can be 1.5 times due to technology and 709 times due to technology combined with stacking.

    “Adenaeuer (2014) mentions that the increase in yield between indoor vertical farms and traditional farming can be increased by 1.5 due to the technology and by 709 due to the technology combined with the stacking ability of the plants.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Adenaeuer (2014)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Interpretationreasoning

    Greenhouses have high geographical flexibility, which can significantly reduce transit time from harvest and processing to final consumers compared with outdoor farming.

    “Another significant advantage of greenhouses in relation with outdoor farming is the high geographical flexibility of installation as it allows a significant reduction of the transit time of the products from the harvesting and processing point to the final consumers.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    Traditional farming lettuce usually costs less than 1€/head, while greenhouse and indoor vertical farm lettuce cost 2-3€/head.

    “More specifically, traditional farming lettuce price usually costs less than 1€/head, while greenhouses lettuce and indoor vertical farm lettuce cost 2–3€/head.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Tasgal (2019)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Premisecitation

    Based on their model and cash flow analysis, indoor vertical farms present profitable investment opportunities with high IRR and a payback period of 3-6 years at a wholesale price of at least 6.36 €/kg.

    “Subsequently, based on their model and the different cash flow analysis, indoor vertical farms present profitable investment opportunities with a high Internal Rate of Return (IRR) and a payback period between 3 and 6 years with a wholesale price equal or more than 6.36 €/kg.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Avgoustaki and Xydis (2020)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    Greenhouse production is highly protected from dangerous elements and various contaminants compared with traditional farming products.

    “Unlike traditional farming products, greenhouse production is highly protected from dangerous elements and various contaminants.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    UV light or disinfectants are effective and efficient methods for water recycling.

    “Methods that are effective and efficient in water recycling is UV light or disinfectants.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    Land experts warn of growing shortages in agricultural land necessary for sufficient food production.

    “However, at the same time, land experts such as agronomists and ecologists, already warn of the growing shortages in agricultural land, necessary for sufficient food production (Al-Kodmary, 2018).”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Al-Kodmary, 2018

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Interpretationreasoning

    Outdoor farming is very open to foodborne illnesses that are extremely difficult to trace, increasing total risks.

    “To summarize, even if there are multiple technological automations, innovations and outbreaks in outdoor farming over the last decades, the nature of this agricultural type is very open to foodborne illnesses, illnesses extremely difficult to be traced rising the total risks.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationnone given

    Hydroponic greenhouses move plants between growing stages and monitor them, which allows precise resource application at each stage, unlike soil-based greenhouses and outdoor farms where plants stay in place until harvest.

    “In hydroponic greenhouses, plants are transported several times according to the growing stage and are monitored throughout the different growing cycles. That give the opportunity to apply the exact resource requirements in every stage, in comparison with soil-based greenhouses and outdoor farms, where the plants remain in the same position until their harvest.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    The UN estimates that 80% of the global population will live in urban areas by 2050.

    “Additionally, UN estimate that 80% of the global population will be located in urban areas by that time.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites UN

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Greenhouse production accounts for half of global tomato production and one-third of global pepper production distributed in the fresh market.

    “Greenhouse plants in an industry that constantly growing, with today's list accounting half of the tomato production and 1/3 of the global pepper production that are distributed in the fresh market (Brauther, 2010).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Brauther, 2010

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    The coefficient of performance of heat pumps in a given room increases when the outside temperature decreases.

    “The coefficient of performance of the heat pumps, in a specific room, increases when the outside temperature decreases.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisenone given

    High requirements in workers' health and hygiene must be followed to prevent contamination that may originate from humans.

    “Finally, there are high requirements in workers' health and hygiene that need to be followed in order to prevent the contamination that may source by humans.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Premisenone given

    Outdoor farmers cannot refrigerate between harvest and transport for water processing, making pathogen infection more uncertain.

    “However, outdoor farmers are not able to perform refrigeration between harvest and transport of the products for water processing, making it more uncertain in pathogens infection.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    The global population is projected by the UN to exceed 9.8 billion by 2050.

    “According to the United Nations (UN) projections, the global population will exceed 9.8 billion until 2050, all requiring to meet their food demand.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites United Nations (UN) projections

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S2 (checkable), S4 (based).

    Interpretationnone given

    Indoor vertical farms are a high necessity for tackling challenges concerning conservation of resources.

    “It is now clear, that indoor vertical farms are a high necessity for tackling the challenges concerning the conservation of their resources.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Interpretationreasoning

    Significant land reduction up to 90% can be achieved with indoor vertical farming due to more than 10 times increase in annual crop productivity per unit land area.

    “Significant land reduction up to 90% can be achieved with the application of indoor vertical farming, due to the important increase (more than 10 times) of the annual productivity of crops per unit land area.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    In the specific survey, 46.7% of the total sample strongly agreed to buy products produced in an indoor vertical farm, 36.4% partly agreed, and 16.8% were not willing to purchase these products.

    “Respondents of the specific survey showed a strong willing on buying products that were produced in an indoor vertical farm with 46.7% of the total sample, 36.4% partly agreed on that statement, and finally only 16.8% were not willing to purchase these products.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Jürkenbeck et al. (2019) source
  • Classified as probably not a substantial claim. May combine two claims.

    Interpretationreasoning

    Achieving reduction of energy demand will add extra value in environmental sustainability and make indoor vertical farming more appealing for public, investors, and industry, increasing viability and profitability.

    “By achieving the reduction of energy demand, it will add extra value in the environmental sustainability of the system but also it would also make it more appealing for the public, the investors and the industry and will increase the viability and profitability.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationreasoning

    Consumers seem more skeptical and critical of indoor vertical farming technology.

    “However, consumers seem to be more skeptical and critical on this technology.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    E. coli O157:H7 was found in fish feces and, because of circulation in closed-loop systems, caused water contamination of plant root surfaces in aquaponic and hydroponic systems.

    “More specifically, they reported that E.coli O157:H7 was found in fish feces and because of the circulation that close loops systems, it caused water contamination of the plant root surfaces that were in the aquaponic and the hydroponic systems.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Wang et al., 2019 source
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    Consumer knowledge and awareness of indoor vertical farming is still limited despite global spread of technology and information.

    “Nevertheless, the subjective knowledge and awareness level of consumers on the indoor vertical farming is still limited, even with the excessive spread of technology and information globally”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    Indoor vertical farms produce food safer to consume than open field grown products.

    “Even if indoor vertical farms produce food safer to consume than the open field grown products, bottlenecks and hazards can still be introduced during the growing process of crops.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    Knowledge, information, and nutritional awareness can become a solid solution for higher acceptance of indoor farming and irradiated food products.

    “For this reason, it is pointed out that knowledge, information and nutritional awareness can become a solid solution for the higher acceptance of indoor farming and irradiated food products.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationreasoning

    Indoor vertical farms significantly decrease CO2 emissions correlated with food transportation from producers and processing facilities.

    “Additionally, indoor vertical farms significantly decrease the CO2 emissions that are correlated to food transportation from the producers and the processing facilities.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Interpretationcitation

    Proper certified handling, cleaning, and sanitizing processes are important to reduce contamination risk in hydroponic and aquaponic systems because fish may be contaminated by bacteria.

    “Since fish probably were contaminated by the bacteria, it is important to follow a proper and certified handling, cleaning and sanitizing process in order to reduce the contamination risk in hydroponic and aquaponics.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    One of the most crucial factors affecting contamination possibility is water quality throughout the whole production process, including irrigation water and washing water at post-harvest processing.

    “Furthermore, one of the most crucial factors that greatly affect the possibility of contamination is the water quality that involves during the whole production process, including the irrigation water as also the washing water at the post-harvest processing techniques.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisenone given

    High precision irrigation systems are used in indoor vertical farms to monitor water traveling throughout crops.

    “High precision irrigation systems are used in order to monitor the water that travels throughout the crops.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationreasoning

    Indoor vertical farms can provide 100 times higher productivity per year per unit land area compared to traditional farming due to zero dependence on weather conditions, seasonality, and possible infections from insects, pests, and bacteria.

    “In specific, indoor vertical farms can provide 100 times higher productivity per year per unit land area compared to traditional farming due to the zero dependence on weather conditions, seasonality and possible infections from insects, pests and bacteria.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Premisecitation

    Despommier (2011) points out opportunity for energy recovery from non-salable crop parts and capture of renewable energy that can create zero energy building for hosting indoor vertical farms.

    “However, it is pointed out by Despommier (2011) that there is the opportunity for energy recovery from the non-salable crops' parts and capture of renewable sources of energy that can create zero energy building for hosting indoor vertical farms.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Despommier (2011) source
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    Overall, customers' behavioral intention to purchase products from indoor vertical farms is highly dependent on sustainability.

    “Overall, the behavioral intention of customers to purchase products from indoor vertical farms is highly dependent on sustainability.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

    Premisenone given

    Bacteria do not grow or prefer targeted geographic locations but are transported to different locations by human activities via clothes, shoes, or skin.

    “Bacteria population are not biased, meaning they do not grow or prefer targeted geographic locations, but they are transported to different locations by human activities as they can be brought by clothes, shoes or skin.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    Biometric systems allow growers to detect tracking information about plants, and after harvest produce is placed in a traceability system from greenhouse to customer delivery.

    “Finally, biometric systems provide to growers the ability to detect tracking information concerning the plants. After harvesting, the produce is set up in a traceability system from the greenhouse plant to the customer delivery service.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationreasoning

    Rinsing purchased greens is not particularly effective or protective because harmful pathogens need chemical interference to be detached from plants.

    “This is not a particularly effective and protective procedure, since harmful pathogens need interference of chemicals to be detached from plants.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Participants rated greenhouse facilities and outdoor farms higher than indoor vertical farms in terms of naturalness of the production process and final product.

    “In another research (Coyle and Ellison, 2017) participants rated higher the greenhouses facilities and the outdoor farms compared to the indoor vertical farms in terms of naturalness in the production process and the final product.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Coyle and Ellison, 2017 source
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationreasoning

    Traditional farming could possibly avoid such temperature/humidity incidents because constant natural air circulation and sunlight could smooth out some errors.

    “This incident could be possibly avoided in the case of traditional farming, as the constant natural air circulation and the sunlight could smooth out some of these errors.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    Due to technology evolution, holding a large land area is no longer a prerequisite for sufficient fresh food production; multiple layers and optimal control of environmental conditions and crop physiology with minimal crop threats can be used.

    “Due to the evolution of technology it is not anymore a prerequisite holding a large area of land for sufficient fresh food production, but the use of multiple layers, optimally controlled (environmental conditions and physiological parameters of the crops and minimum possible loss from crop threats).”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    Outdoor farming and most greenhouses perform triple-wash on harvested plants as a post-harvest process to mitigate contamination risk.

    “Outdoor farming and most of the greenhouses perform triple-wash on the harvested plants in order to mitigate the contamination risk, as a post-harvest process.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    Indoor vertical farming does not provide 100% safety for consumers, but it upgrades the safety and security feeling of products compared to open-field grown products.

    “Even if it does not provide a 100% safety for consumers, despite the fact that crops grow in a controlled environment protected by wildlife, animals, birds and insects, it upgrades the safety and security feeling of the products than those that grow in open field.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisenone given

    Extensive sterilization and supplier sourcing are applied in indoor vertical farms to control and assure that input resources such as seeds and nutrients are absolutely safe and clean.

    “Extensive sterilization and supplier are also applied methodologies of indoor vertical farms that control and assure the input resources of the farms such as seeds, nutrients that need to be absolutely safe and clean.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

    Premisenone given

    Ultraviolet light outside farms detects possible threats, and air curtains installed in every door control air entering the cultivation room, protecting it from contamination.

    “This can be achieved with the use of ultraviolet light outside of the farms that detect possible threats as also air curtains that are installed in every door and can control air that enters the cultivation room protecting it from the danger of contamination.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    Certified HVAC filters can increase sanitation levels of indoor crops by performing extensive pest monitoring.

    “Additional solution that can increase the sanitation levels of indoor crops, is the application of certified HVAC filters, in order to perform an extensive pest monitoring.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    Eliminating domestic and wild animals from growing activities inside and outside greenhouses protects crops from foodborne pathogens.

    “Significant measure for the protection of crops from foodborne pathogens is also to eliminate the restriction of domestic and wild animals at growing activities inside the greenhouses as well as in the outside area of the buildings.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisereasoning

    Leafy greens, vegetables, and herbs are high-risk crops because they are usually eaten raw rather than cooked.

    “Leafy greens, vegetables and herbs are considered of high-risk crops since they are usually not cooked but eaten raw.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisenone given

    Between every translocation of plants in indoor vertical farms, there is intensive quality check to prevent crop contamination.

    “Between every translocation of plants, there is intensive quality check to prevent crops' contamination.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Interpretationreasoning

    Indoor vertical farms are usually installed in urban or suburban areas in shaded and/or abandoned buildings due to soilless farming techniques and artificial lighting, providing access to fresh and nutritious greeneries to citizens.

    “This can be achieved since indoor vertical farms are usually installed in the urban or suburban areas in shaded and/or abandoned buildings (or even basements) due to the soilless farming techniques and the artificial lighting, providing access to fresh and”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    People's perceptions of technological innovations in agriculture are associated with high risks for food production and low expectations of technology benefits.

    “More specifically, peoples' perception with technological innovations in agriculture are associated with high risks for food production presenting low expectations on the provided benefits of technology used (Sparks et al., 1994).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Sparks et al., 1994 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    People select purchased food based on concerns about naturalness, ethics, and environmental status.

    “People seem to select their purchased food based on their concerns on the naturalness, ethics and environmental status.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    A significant sustainability characteristic of indoor vertical farms is minimization of food delivered losses.

    “Significant characteristic of indoor vertical farms in terms of sustainability is the minimization food delivered losses.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    Further improvements in equipment efficiency and effectiveness will lead to a significant decrease in energy demand of indoor vertical farming systems.

    “It is of vital importance further improvements on the efficiency and effectiveness of the equipment that will lead to a significant decrease of the energy demand of the systems.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    Even if indoor farms are a safer environment compared to other farming types, if a controlled environment develops a bacterial infection, it will be extremely difficult to eliminate contamination and protect the rest of the growing crop.

    “Furthermore, it should be noted that even if indoor farms consist a safer environment compared to other farming types, if a controlled environment develops for some reason bacterial infection, it will be extremely difficult to eliminate the contamination and protect the rest of the growing crop.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Interpretationreasoning

    Even if consumers generally prefer naturally and traditionally produced food, food from indoor vertical farms grown without chemical additives is highly considered.

    “Even if consumers in general prefer naturally and traditionally produced food, nevertheless the fact that food of indoor vertical farms grow without chemical additives is highly considered.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Interpretationnone given

    Triple-wash causes quality reduction in greens, including loss of flavor and texture, and carries concurrent risk of contamination if incorrectly applied.

    “Unfortunately, this method cause quality reduction to greeneries, as is observed loss of flavor and texture along with the concurrent risk of contamination existing and spreading under the possibility of incorrect application.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    Threats in indoor vertical farms include dirt and bacteria transferred from workers and dangerous threats in the nutrient medium, including chemical sources, cleanliness, and water safety.

    “Such threats can be dirt and bacteria transferred from the workers and dangerous threats in the nutrient medium that include chemical sources, cleanliness and water safety.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationreasoning

    Application of innovative technologies that operate extensive integrated pest monitoring can further eliminate risk from potential contamination.

    “Another solution for further risk elimination from potential contamination, is the application of innovative technologies that operate extensive integrated pest monitoring.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

    Premisenone given

    Perceived behavioral control does not influence customers' willingness to buy, but it has some influence on the behavioral intention of willingness to purchase the product.

    “However, it should be noted that the perceived behavioral control does not influence the customers' willingness to buy, but it has some influence on the behavioral intension of willingness to purchase the product.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based). May combine two claims.

    Premisenone given

    Innovative hydroponic or aeroponic methods usually draw water from filtered and drinkable sources and distribute it at each crop often without touching the salable plant parts, by liquid, mist, or fog sprayed only into the root section.

    “Innovative hydroponic or aeroponic methods usually draw water from filtered and drinkable sources and distribute it at each crop often without even touching the salable part of the plants. This is achieved either by the use of water in liquid form, mist or fog that sprays it only into the root section of the plants and not in the parts consumed.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    Start-up costs associated with indoor vertical farms are significant; developing a vertical greenhouse is more expensive than a normal greenhouse.

    “Significant is also the start-up costs that are associated with indoor vertical farms as it is clear that it is more expensive to develop a vertical greenhouse than a normal greenhouse (Fletcher, 2012).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Fletcher, 2012

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    It is difficult, time-consuming, and costly to control all plants even in an indoor vertical farm to achieve a 100% safe food product.

    “It is a very difficult, time consuming and α costly process to control all the plants even in an indoor vertical farm for having a 100% safe food product.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisenone given

    People have higher confidence and trust in greenhouse products, then indoor vertical farms, and finally outdoor farming products, concerning quality status of the final product.

    “Concerning the quality status of the final product people also seem to present higher levels of confidence and trust on the greenhouse products and subsequently indoor vertical farms and finally in outdoor farming products.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Premisenone given

    Indoor vertical farms apply only nutrient elements in irrigation and completely avoid chemicals during plant growing, excluding pesticides, herbicides, and chemical spraying for fertilization.

    “Indoor vertical farms apply only nutrient elements in the irrigation system and completely avoid the use any chemicals during the growing period of plants, excluding all the types of pesticides, herbicides and chemical spaying for fertilization.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationreasoning

    The majority of selected cultivated crops of indoor vertical farms are among species with higher contamination risk when grown outdoors or unprotected because they grow very close to ground level.

    “The majority of the selected cultivated crops of indoor vertical farms are among the species with the higher contamination risk when they grow outdoors or unprotected, because they grow very close to the ground level.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationreasoning

    Significant reductions can be observed in cooling fuel demand necessary to cool production for long-distance transport.

    “In addition, significant reductions can be observed in the cooling fuel demand, necessary to cool the production in order to be transported in long distances.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    According to Jürkenbeck et al. (2019), customers replied that LED lighting is not considered too artificial for horticulture and slightly agreed that they do not consider indoor vertical farming too artificial concerning the overall production system.

    “According to Jürkenbeck et al. (2019), customers replied that LED lighting is not considered a too artificial tool for horticulture and slightly agreed that they do not consider indoor vertical farming too artificial concerning the overall production system.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Jürkenbeck et al. (2019) source
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationreasoning

    Indoor vertical farms save 100% of pesticide use in their interior by maintaining the culture area clean and insect-free.

    “Indoor vertical farms save 100% of the pesticide use in their interior by maintaining the culture area clean and insect-free.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Premisenone given

    Indoor farming philosophy depends on monitoring and constant control of crops and all resources entering and leaving the farm, isolated from nature.

    “The philosophy of indoor farming depends on monitoring and constant controlling of the crops as also of all the resources that come in and out from the farm and they are isolated from Mother Nature where many threats and contamination sources may appear.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    One significant benefit of indoor vertical farms is the ability, after proper processing, to use waste water, crop wastes, and excessive CO2 produced in urban areas as input resources of water, nutrients, and CO2 in the culture area.

    “Finally, one of the significant benefits that indoor vertical farms provide is the ability after proper processing of the use of waste water, crop wastes and excessive CO2 produced in urban areas, as input resources of water, nutrients and CO2 in the culture area.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based). May combine two claims.

    Premisenone given

    The whole system of indoor farming can synchronize and manipulate huge amounts of carbon and simultaneously release oxygen into the atmosphere from plants' respiration.

    “At the same time, the whole system of indoor farming can synchronize and manipulate huge amounts of carbon and simultaneously release into the atmosphere oxygen from plants' respiration.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisereasoning

    Naturalness is a high influencing indicator for consumers' selection globally and a critical factor in the usefulness of an agricultural system.

    “Naturalness seems to be a high influencing indicator for consumers' selection globally as also a critical significant factor on the usefulness of the agricultural system.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Premisereasoning

    These protocols include strict control imposing use of facemasks, hair and beard nets, footbaths, and clean or single-use suits, which can diminish contamination risk.

    “That include strict control by imposing the use of facemasks, hair and beard net, footbaths and clean or single-use suits, which can diminish the risk of contamination.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    A significant share of consumers evaluates indoor vertical farming as an artificial agricultural process in order to trust its footprint outcome.

    “On the other hand, a significant share of the consumers evaluates indoor vertical farming as an artificial agricultural process in order to trust their footprint outcome.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    According to Produce Rule, all tools and equipment used in the production line should be inspected, cleaned, sanitized, and maintained throughout production, harvesting, and post-harvesting to prevent contamination.

    “According to Produce Rule, all the tools and equipment that used in the production line should be inspected, cleaned, sanitized and maintain in this condition throughout the whole production, harvesting and post-harvesting process, in order to prevent contamination.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Produce Rule

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    Multiple studies estimate and analyze significant increased food demand in urban areas.

    “This becomes even more important by the multiple studies that estimate and analyze the significant increased food demand in urban areas.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S4 (based).

    Interpretationreasoning

    Further development in automation will scale up projects to create more feasible scenarios from economic and commercial perspectives.

    “This will be scaling up the projects in order to create more feasible scenarios both from economic and commercial perspective.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    If indoor vertical farms achieve to produce up to 50 times more yield compared to traditional farming, then they can offset capital expenditures and expensive land use.

    “More specifically, if indoor vertical farms achieve to produce up to 50 times more yield compared to traditional farming, then they can offset the capital expenditures and the expensive land use.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S4 (based).

    Interpretationnone given

    Indoor vertical farming presents important advantages compared to traditional farming concerning required sustainability by focusing on three main categories: environmental, economic, and social.

    “Indoor vertical farming presents important advantages compared to traditional farming, concerning the required sustainability in our times by focusing in three main categories: environmental, economic and social.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given

    Even if theoretically all types of crops could be cultivated indoors, that would not be economically feasible due to highly increased energy demand.

    “Even if theoretically, all types of crops could be cultivated indoors, that would not be economically feasible due to the highly increased energy demand.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Premisecitation

    In that work, different investment scenarios based on cash flow analyses show that IUVF can present high IRR and a payback period between 2 and 6 years.

    “In the specific work, different investment scenarios are presented based on the cash flow analyses and show that IUVF can present high IRR (Investment Return Rate) as also a payback period between 2 and 6 years.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites Avgoustaki and Xydis (2020)

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • Probably not a substantial claim: may not pass S2 (checkable), S4 (based).

    Interpretationreasoning

    Indoor vertical farming presents high interest and potential to play a critical role in the demanded sustainability in food of urban areas.

    “Indoor vertical farming presents a high interest and potential to play a critical role in the demanded sustainability in food of urban areas.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    A key barrier indoor vertical farmers confront is public resistance to these products because social masses have difficulty accepting indoor vertical farms instead of traditional farming due to the natural way food is produced.

    “As it has been highlighted by many studies one also key barrier that indoor vertical farmers have to confront is the public resistance to these type of products as social masses face difficulty in accepting indoor vertical farms”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Interpretationreasoning

    Indoor vertical farms serve the concept of local, fresh food production and are mainly installed in urban or peri-urban areas, so they must address affordability because of expensive land and space use.

    “Additionally, as indoor vertical farms serve the concept of local, fresh food production and they are mainly installed in urban or peri urban areas, they have also to salient the issue of affordability because of the expensive land and space use.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S3 (load-bearing), S4 (based).

    Interpretationnone given

    There is a high demand for further development in automation.

    “There is a high demand for further development in automation.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    Another drawback linked with indoor farming production is the limited variety of crops that can be produced, such as lettuce, herbs, tomatoes, and berries.

    “Finally, another drawback that is linked with indoor farming production is the limited variety of crops that can be produced with this technology, such as lettuce, herbs, tomatoes and berries.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    Under these circumstances, indoor vertical farms have to face limited production compared to the limitless hectares of traditional farming, and reconsideration of scaling up would be particularly costly and complicated.

    “Under these circumstances, the indoor vertical farms have to face a limited production compared to the “limitless” hectares of traditional farming and a reconsideration of scaling up would be particularly costly and complicated.”
    Quote in the paperSubstantial claim
152 of 152
  • The authors state this as an assumption.

    The minimum daily food demand of a single person is at least 2000 kcal.

    “Based on the assumption that the minimum daily demand of a single person is minimum 2000 kcal”
  • The authors state this as an assumption.

    Current agricultural practices will be maintained.

    “if we maintain the same agricultural practices”
  • The paper relies on this without support.

    Food currently travels thousands of miles daily from production areas to urban consumers, releasing large amounts of CO2.

    “nowadays food travels daily thousands of miles from the production areas to the urban consumers, in order to meet the demand, releasing huge amounts of CO2.”
  • The paper relies on this without support.

    The 2017–18 E. coli O157:H7 outbreak in the US was linked to consumption of leafy greens and romaine lettuce.

    “In 2017–18, E.coli O157: H7 outbreak in the US caused sudden eruption linked to consumption of leafy greens and the romaine lettuce.”
  • The paper relies on this without support.

    The E. coli outbreak pathogen was mainly reported in Yuma, AZ and Salinas, California, where greenhouses producing more than 90% of US leafy vegetables and greens are based.

    “The pathogen was mainly reported in the regions Yuma, AZ and Salinas, California, where greenhouse installations that produce more than 90% of the leafy vegetables and greens in the United States are based.”
  • The paper relies on this without support.

    E. coli contamination in the production line almost always originates from irrigation water used in fields.

    “E.coli contamination in the production line almost all of the times originates from the irrigation water used in the fields.”
  • The paper relies on this without support.

    Washing field-grown products after harvest creates additional risk of contamination from bacteria and pathogens and can spread contamination to the whole production.

    “further risk in the contamination process from various bacteria and pathogens comes from the washing of field-grown products after they are harvested, while this step can spread contamination to the whole production.”
  • The paper relies on this without support.

    Outdoor farming usually dunks lettuce heads in water tanks from rainfall or irrigation after harvest, while most greenhouses apply triple washes with running water from the local network.

    “The most regular technique that outdoor farming applies after harvest is to dunk lettuce heads in water tanks from rainfall or irrigation, while most greenhouses apply triple washes with running water from the local network.”
  • The paper relies on this without support.

    Lettuce is fragile, easily contaminated, and can spread diseases among the population.

    “Lettuce belongs to the basic daily diet products; its nature is fragile and can be easily contaminated and spread diseases among the population.”
  • The paper relies on this without support.

    Hydroponics addresses soil drought and salinity that reduce yield and crop quality.

    “Hydroponics successfully address the challenge of soil drought and salinity that reduces both yield and crop quality.”
  • The paper relies on this without support.

    Deforestation is a major problem because forests are continuously converted to farmland, accelerating climate change and reducing soil water retention.

    “Worth noticing that deforestation is a major problem, since forests are continuously sacrificed against farmland that leads to climate change acceleration and soil inability to maintain water at lower levels.”
  • The paper relies on this without support.

    Traditional farmed lettuce has a cultivation cycle of 1.5 to 2.5 months depending on variety, techniques, and season.

    “Depending on the cultivated variety, the techniques and the season, traditional farmed lettuce has a cultivation cycle between 1.5 and 2.5 months.”
  • The paper relies on this without support.

    Outdoor romaine lettuce has a harvest period of 55–70 days and a typical yield of 25–30 tons per hectare.

    “For the romaine lettuce grown outdoors, the harvest period is between 55 and 70 days with a typical yield of 25–30 tons/ha.”
  • The paper relies on this without support.

    Food miles emissions represent on average 62% of total emissions released throughout traditional farming.

    “Food miles emissions represent on average 62% of the total emissions released throughout traditional farming.”
  • The paper relies on this without support.

    Food waste is an important source of CO2 emissions linked to traditional farming.

    “Another important source of CO2 emissions that is linked to traditional farming is the significant amounts of food waste.”
  • The paper relies on this without support.

    Mono-cropping provides uniformity, reduces labor costs, and makes harvesting easier.

    “the selection and maintenance of mono-cropping techniques that provide a uniformity in the applied practices, can reduce the labor costs and make harvesting easier.”
  • The paper relies on this without support.

    Cultivating only one-species crops across an entire field can reduce biodiversity and make crops more susceptible to pathogen infections.

    “by cultivating only one-species crops in the entire field, it can highly influence the biodiversity and make crops more susceptible to pathogen infections.”
  • The paper relies on this without support.

    To avoid pathogen susceptibility, traditional farmers apply chemicals and genetically modified organisms, which requires continuous input of resources and energy.

    “To avoid this effect, traditional farmers apply chemicals and genetically modified organisms to maintain a simple farming system. This practice, though, requires a lot of continuous input of resources and energy (cost).”
  • The paper relies on this without support.

    Improved crop husbandry and changed crop mix can greatly improve water usage.

    “Common agronomic measures such as improved crop husbandry and changed crop mix driven by the crop selection, can have a huge impact in improvement of water usage.”
  • The paper relies on this without support.

    Modifying irrigation infrastructure can positively influence water use efficiency.

    “there are various cultivation techniques such as modification of the irrigation infrastructure, which can also influence positively the water use efficiency.”
  • The paper relies on this without support.

    Greenhouses protect crops from severe weather and allow cultivation of out-of-season species.

    “Plants growing under greenhouses can grow protected from severe weather conditions such as hail, snow, extreme low temperatures or excessive heat, while at the same time can allow cultivations of out-of-season species.”
  • The paper relies on this without support.

    Greenhouse coverage materials protect crops from outdoor variability, diffuse solar radiation, and trap moisture, contributing to increased plant growth.

    “According to their installed area, greenhouses can be presented with various coverage materials such as plastic, glass, polyethylene and rigid that protect crops from the variability of the outdoor conditions, diffuses solar radiation and traps moisture, which contributes to increased plant growth.”
  • The paper relies on this without support.

    Greenhouse coverage systems allow farmers to control the cultivation environment, maintain heating and cooling, create a more predictable microclimate, enhance yield, achieve higher quality, and reduce water consumption compared to open field crops.

    “This way, inside the greenhouses, farmers can develop and maintain the desired microclimate and create a more predictable environment that enhances the final plant yield, achieving higher quality and reduced water consumption compared to open field crops.”
  • The paper relies on this without support.

    Open greenhouses do not collect drained water for reuse, usually have soil-based crops, and have low water use efficiency due to soil depletion and constant drainage.

    “These systems seem to have low level of water usage efficiency as they are affected by water losses due to soil depletion and constant water drainage, which drains the excess amount of water with fertilizers.”
  • The paper relies on this without support.

    In open greenhouses, drain can be 5% to 50% of water supply and can be improved by reusing drain in irrigation.

    “The percentage of drain can number between 5% and 50% of the water supply, but can be improved by reusing this drain in the irrigation system.”
  • The paper relies on this without support.

    Semi-closed greenhouses reuse drained nutrient solution by collecting it in a tank topped up with fresh water.

    “Concerning the irrigation systems, semi-closed greenhouses reuse the drained nutrient solution by collecting it to a tank that is constantly topped-up with fresh water.”
  • The paper relies on this without support.

    Closed greenhouse systems use mechanical cooling and dehumidification by air treatment units.

    “Finally, closed-systems refer to absolute mechanical support of the cooling and dehumidification system by air treatment units.”
  • The paper relies on this without support.

    Transpiration influences water uptake by 90%, so controlling and reducing transpiration can greatly affect water use.

    “Transpiration is the most important factor that influences the water uptake by 90%, thus the control and reduction of transpiration rate can have a huge impact on the water use.”
  • The paper relies on this without support.

    Higher humidity inside a greenhouse lowers transpiration levels.

    “The higher the humidity inside the greenhouse the lower the transpiration levels are.”
  • The paper relies on this without support.

    Drip irrigation saves large amounts of water, maintains constant humidity in soil or hydroponic substrate, avoids water stagnation and puddling, and allows targeted limited fertilization.

    “Drip irrigation has the advantage of saving large water amounts and also can control and maintain the humidity levels of the soil or the hydroponic substrate in constant levels.”
  • The paper relies on this without support.

    Micro sprinklers spray water around two meters depending on nozzle pressure and are mainly used in soil-based greenhouses with sandy soil.

    “Other irrigation systems are the micro sprinklers that spray water in a range around two meters according to the pressure of the selected nozzle type.”
  • The paper relies on this without support.

    Irrigation with diffusers is mainly used in narrower areas and its pressure depends on the nozzle.

    “Another very commonly used system is the irrigation with diffusers and is mainly used in narrower areas and the pressure of the diffuser depends on the nozzle that regulates the water supply and flow.”
  • The paper relies on this without support.

    Hose and underground irrigation are mainly found in soil-based greenhouses and have low water efficiency.

    “Finally, other irrigation systems applied in greenhouses are irrigation with hose and underground irrigation mainly found in soil-based greenhouses and present low level of water efficiency.”
  • The paper relies on this without support.

    Traditional farming experiences large resource and water waste due to soil degradation and eutrophication.

    “traditional farming experiences huge amounts of resource and water waste as farmlands face the negative effects of soil degradation and the harmful effect of eutrophication”
  • The paper relies on this without support.

    Excess phosphates and nitrates in soil cause nutrient runoff and leaching in traditional agriculture.

    “excess supply of phosphates and nitrates in the soil can cause nutrient run/off and leaches.”
  • The paper relies on this without support.

    Greenhouse areas with limited solar irradiation have higher artificial lighting demand than sunny areas.

    “greenhouse areas with limited solar irradiation hours (North part of Europe, i.e., Netherlands, Denmark) have higher demand on artificial lighting in comparison with areas under sunshine (southern part of Europe, i.e., Spain, Greece, Italy).”
  • The paper relies on this without support.

    Heating greenhouses with natural gas consumes 31.6 MJ and emits 2.02 kg CO2 per kg tomatoes.

    “When heating of greenhouses is achieved with the use of natural gas, the consumed energy can reach the 31.6 MJ with 2.02 kg of CO2 for the production of 1 kg of tomatoes.”
  • The paper relies on this without support.

    Heat losses in greenhouses can be minimized with double glazing or multiple screens.

    “Heat losses can be minimized with the use of double glazing coverage material or with the use of multiple screens.”
  • The paper relies on this without support.

    Without highly automated technology, average workforce required in greenhouses is about 8 workers per 500 m2.

    “Without the use of highly automated technology, the average work force required in greenhouses for cultivating purposes is estimated at approximately 8 workers per a 500 m2 production area.”
  • The paper relies on this without support.

    Selecting inexpensive electricity hours for lighting and dark expensive hours has no significant impact on plant growth and development.

    “It has been proven that by selecting the hours throughout the day that are not expensive to give the required light, and “give darkness” when electricity price is expensive, has not a significant impact on plants' growth and development.”
  • The paper relies on this without support.

    When lamps do not function in indoor vertical farms, relative humidity can reach 100% and cause physiological and morphological disorders.

    “when lamps do not function, the relative humidity of the room can reach up to 100% (little transpiration in the culture room), and cause physiological and morphological disorders to the plants.”
  • The paper relies on this without support.

    Consumers can recognize and distinguish the three agricultural systems (traditional farming, greenhouses, and indoor vertical farms) in surveys.

    “For this reason, primarily it was of high importance to validate that consumers are able to recognize the different agricultural systems between them in order to provide valid, clarify and comprehensive results.”
  • The paper relies on this without support.

    The opinions of respondents in the cited customer surveys represent the broader consumer population.

    “Different customer studies that investigated customers' opinion on different agricultural methods show a more skeptical belief concerning novel technologies on food production.”
43 of 43

Cites

Flagged first, then by citations

6 of the 51 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. Adenaeuer, 2014, Up, up and away! The economy of vertical farming, J. Agric. Stud., 1, 40
  2. Despommier, 2011, The vertical farm: controlled environment agriculture carried out in tall buildings would create greater food safety and security for large urban populations, J Verbrauch Lebensm, 6, 233, 10.1007/s00003-010-0654-3 · DOI · Paper page
  3. Kublic, 2015, Comparison of land, water, and energy requirements of lettuce grown using hydroponic vs. conventional agricultural methods, Int. J. Environ. Res. Public Health, 12, 6879, 10.3390/ijerph120606879 · DOI · Paper page

Cited by

Sorted by citations

Authors
Avgoustaki, D. D., & Xydis, G. A.
Affiliations
Aarhus University (DK)
Corresponding author
George A Xydis
Venue
Advances in Food Security and Sustainability
Publisher
Elsevier
Published
2020
Pages
1-51
ISSN
2452-2635 (ISSN-L)
OpenAlex
W3088478279
Cited by
144
References
51
Citations by year
2026: 12 · 2025: 26 · 2024: 49 · 2023: 37 · 2022: 12 · 2021: 8
FWCI
24.11
Type
book chapter
Language
en
Open access
Locations
  • Advances in food security and sustainability (publishedVersion)
  • PubMed Central (publishedVersion)
  • Elsevier eBooks (publishedVersion, other-oa)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Urban Agriculture and Sustainability
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Innovations in Aquaponics and Hydroponics Systems
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Energy, Environment, Agriculture Analysis
Keywords
indoor vertical farming, food safety, food security, energy innovation, greenhouse cultivation, demand response aggregation, electricity pricing, CO2 emission reduction, urban agriculture, sustainable food production

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-09-28.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-09-28.

Cited sources are checked by gpt-6-sol.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

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