A modified CROPGRO model for simulating soybean growth in controlled environments.

J Cavazzoni; T Volk; G Stutte

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PubMed · 11540451

A modified CROPGRO model for simulating soybean growth in controlled environments.

J Cavazzoni·T Volk·G Stutte

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Abstract

The CROPGRO crop growth model is adapted in order to analyze experimental data from a soybean (cv. Hoyt) experiment conducted at elevated CO2 levels (1200 micromol mol-1) at Kennedy Space Center, FL. The following adaptations to original CROPGRO produced model agreement with gas-exchange data: the input of square-wave temperature and photosynthetically active radiation (PAR) profiles; the input of the appropriate hydroponic substrate PAR albedo; modified biomass partitioning and developmental parameters; an increased leaf area expansion rate through the fifth vegetative node; a decreased specific leaf area after the fifth vegetative node; and an increased incident diffuse PAR fraction over typical field values. The model demonstrated here suggests that with continued development, modified CROPGRO will be a useful tool in the analysis and eventual optimization of legume production in bioregenerative life support systems.

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Biomass Carbon Dioxide Computer Simulation Ecological Systems, Closed Environment, Controlled Evaluation Studies as Topic Life Support Systems Light Models, Biological Photosynthesis Plant Leaves Glycine max Temperature NASA Center KSC NASA Discipline Life Support Systems Non-NASA Center Comparative Study Journal Article Research Support, U.S. Gov't, Non-P.H.S.

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J Cavazzoni, T Volk, G Stutte. 1997. A modified CROPGRO model for simulating soybean growth in controlled environments.. https://pubmed.ncbi.nlm.nih.gov/11540451/

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