Abstract
YIELD, a parametric crop production model, employs climatic data to calculate actual and potential yield for various crops and includes formulations for specific crop and growth stage effects. The objective was to demonstrate the sensitivity of YIELD for grain corn (maize) to changes in various environmental and decision-making inputs. Five temperature, five solar radiation, six relative humidity regimes, five water application schemes, and four irrigation frequencies were included in this study. The effects of different soil types and wind regimes on crop water requirements were investigated. The model output includes crop yield, water use efficiency, and management efficiency. Among the results, yield decreased on the average by 3.9% per one degree (C) increase in air temperature. A 1% change in solar radiation resulted in an average of 1% change in yield. Similar changes in relative humidity caused a yield change of about 0.8%.
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Terjung, W.H., Hayes, J.T., O'Rourke, P.A. et al. Yield responses of crops to changes in environment and management practices: Model sensitivity analysis. I. Maize. Int J Biometeorol 28, 261–278 (1984). https://doi.org/10.1007/BF02188554
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DOI: https://doi.org/10.1007/BF02188554