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

The DOI matches its Crossref record; 45 of the 51 references it cites were found in a registry or an index; 16 of the 105 sources its claims cite were checked for support.

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.

Overview

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.

Verification

Claims the paper makes

98 Own interpretation · 56 Sources not found · 50 No basis given · 31 No full text of the sources · 10 Partly supported · 4 Not checked yet · 3 Couldn’t confirm · 2 Supported · accuracy not yet measured

Show all 102 claims

  • Probably not a substantial claim. 98
  • It may state two separate claims as one. 81
  • Not yet classified. 1
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

Citations

Cites

Show all 51 references

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

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Metadata

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
  • Social Sciences › Urban Studies › 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

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