Cited by 36Plant Growth and Agriculture TechniquesSpace Exploration and TechnologyAgricultural Science and Fertilization

Can lunar and martian soils support food plant production? Effects of horse/swine monogastric manure fertilisation on regolith simulants enzymatic activity, nutrient bioavailability, and lettuce growth

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Caporale, Antonio G., Amato, Mariana, Duri, Luigi G., Bochicchio, Rocco, De Pascale, Stefania, Simeone, Giuseppe Di Rauso, Palladino, Mario, Pannico, Antonio +3 more·2022·Plants

Abstract

To make feasible the crewed missions to the Moon or Mars, space research is focusing on the development of bioregenerative life support systems (BLSS) designed to produce food crops based on in situ resource utilisation (ISRU), allowing to reduce terrestrial input and to recycle organic wastes. In this regard, a major question concerns the suitability of native regoliths for plant growth and how their agronomic performance is affected by additions of organic matter from crew waste. We tested plant growth substrates consisting of MMS-1 (Mars) or LHS-1 (Lunar) simulants mixed with a commercial horse/swine monogastric manure (i.e., an analogue of crew excreta and crop residues) at varying rates (100:0, 90:10, 70:30, 50:50, w/w). Specifically, we measured: (i) lettuce (Lactuca sativa L. cultivar ‘Grand Rapids’) growth (at 30 days in open gas exchange climate chamber with no fertilisation), plant physiology, and nutrient uptake; as well as (ii) microbial biomass C and N, enzymatic activity, and nutrient bioavailability in the simulant/manure mixtures after plant growth. We discussed mechanisms of different plant yield, architecture, and physiology as a function of chemical, physico-hydraulic, and biological properties of different substrates. A better agronomic performance, in terms of plant growth and optically measured chlorophyll content, nutrient availability, and enzymatic activity, was provided by substrates containing MMS-1, in comparison to LHS-1-based ones, despite a lower volume of readily available water (likely due to the high-frequency low-volume irrigation strategy applied in our experiment and foreseen in space settings). Other physical and chemical properties, along with a different bioavailability of essential nutrients for plants and rhizosphere biota, alkalinity, and release of promptly bioavailable Na from substrates, were identified as the factors leading to the better ranking of MMS-1 in plant above and below-ground mass and physiology. Pure Mars (MMS-1) and Lunar (LHS-1) simulants were able to sustain plant growth even in absence of fertilisation, but the amendment with the monogastric manure significantly improved above- and below-ground plant biomass; moreover, the maximum lettuce leaf production, across combinations of simulants and amendment rates, was obtained in treatments resulting in a finer root system. Increasing rates of monogastric manure stimulated the growth of microbial biomass and enzymatic activities, such as dehydrogenase and alkaline phosphomonoesterase, which, in turn, fostered nutrient bioavailability. Consequently, nutrient uptake and translocation into lettuce leaves were enhanced with manure supply, with positive outcomes in the nutritional value of edible biomass for space crews. The best crop growth response was achieved with the 70:30 simulant/manure mixture due to good availability of nutrients and water compared to low amendment rates, and better-saturated hydraulic conductivity compared to high organic matter application. A 70:30 simulant/manure mixture is also a more sustainable option than a 50:50 mixture for a BLSS developed on ISRU strategy. Matching crop growth performance and (bio)chemical, mineralogical, and physico-hydraulic characteristics of possible plant growth media for space farming allows a better understanding of the processes and dynamics occurring in the experimental substrate/plant system, potentially suitable for an extra-terrestrial BLSS.

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  • Previous studies by the authors on Martian and Lunar regolith simulants showed that both pure regoliths are unsuitable to sustain plant growth even with fertigation.

    “Results revealed that both pure regoliths are unsuitable to sustain the plant growth, even in the presence of fertigation”

    From Fava bean plant performance and fertility dynamics in Mars regolith simulant-based substrates for space farming (2025) · cites this paper as Caporale et al., 2022

    The Conclusions (page not provided) state the opposite: pure Mars and Lunar simulants sustained lettuce growth even without fertilisation. The paper notes that their properties can hinder growth and that manure improves it, but does not say the pure simulants cannot sustain growth with fertigation. (LLM, conf=0.90)

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Research works printed but not linked: 6

  1. [1]Fackrell L.E. Plant growth experiments using martian simulants: Potential and limitations of agriculture on Mars Proceedings of the Geology Conference Paper 2021 Abtract 1634 Available online: https://ui.adsabs.harvard.edu/abs/2021LPI....52.1684F/abstract (accessed on 25 October 2022)
  2. [11]Tibbitts T.W. Alford D.K. Controlled Ecological Life Support System—Use of Higher Plants Proceedings of the NASA Conference Publication NASA: O’Hare Chicago, IL, USA 1980 2231
  3. [17]Fackrell L.E. Schroeder P.A. Growing Plants on Mars: Potential and Limitations of Martian Soil As a Plant Growth Medium Based on Results from Analogue Studies Proceedings of the ASA, CSSA and SSSA International Annual Meetings Virtual 9–13 November 2020
  4. [21]Gregory J. Kirkegaard J.A. Growth and Function of Root Systems Encyclopedia of Applied Plant Sciences Thomas B. Murray B.G. Murray D.J. Academic Press Cambridge, MA, USA 2017 230 237
  5. [90]Cramer G.R. Uptake and role of ions in salt tolerance Strategies for Improving Salt Tolerance in Higher Plants Jaiwal P.K. Singh R.P. Gulati A. Oxford & IBH Publishing Co. Pvt. Ltd New Delhi, India 1997 55 86
  6. [97]Alef K. Nannipieri P. Methods in Applied Soil Microbiology and Biochemistry Elsevier Amsterdam, The Netherlands 1995 9780125138406

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Authors
Caporale, A. G., Amato, M., Duri, L. G., Bochicchio, R., De Pascale, S., Simeone, G. D. R., Palladino, M., Pannico, A., Rao, M. A., Rouphael, Y., & Adamo, P.
Affiliations
  • University of Naples Federico II (IT)
  • University of Basilicata (IT)
  • Department of Agricultural Sciences, University of Naples Federico II, 80055 Portici, Italy
Corresponding author
  • Caporale, Antonio G.
  • Rouphael, Youssef
Venue
Plants
Publisher
MDPI AG
Published
2022-12-02
Volume
11
Issue
23
Pages
3345
ISSN
2223-7747 (ISSN-L)
OpenAlex
W4311107385
Cited by
36
References
91
Citations by year
2026: 11 · 2025: 12 · 2024: 4 · 2023: 7 · 2022: 2
FWCI
3.37
Type
journal article
Language
en
Open access
Locations
  • Plants (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • CINECA IRIS Institutional Research Information System (University of Basilicata) (submittedVersion, other-oa)
Funders
Italian Space Agency (F74I16000000005)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Plant Growth and Agriculture Techniques
  • Physical Sciences › Engineering › Aerospace Engineering › Space Exploration and Technology
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Agricultural Science and Fertilization
Keywords
lunar regolith simulant, bioregenerative life support, in-situ resource utilization, lettuce growth, nutrient bioavailability, microbial biomass, plant nutrient uptake, water availability, sodium release, space agriculture, chlorophyll

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