Crop Sequencing to Improve Productivity and Profitability in Irrigated Double Cropping Using Agricultural System Simulation Modelling
نویسندگان
چکیده
Land and water are two major inputs for crop production. Simulation modelling was used to determine sequences that maximise farm return. Crop yield determined different irrigation scheduling scenarios based on the fraction of available soil (FASW). Farm returns ($ ML−1 $ ha−1) were evaluated seven sequences. Three price (dry, median, wet) considered. The summer crops increased with irrigation. For winter crops, despite increase in irrigation, would not increase. optimum (ML was: soybean 8.2, maize 10.4, wheat 2.5, barley 3.1, fababean canola 2.7. productivity curve has a parabolic shape, increasing FASW, reaching maximum value at FASW 0.4–0.6, then decreasing. decreases as increases following power function. Gross margins positive when is cheap ($60 ML−1) median ($124 ML−1). When expensive ($440 ML−1), gross margin be obtained only continuous scenario. Deficit leads significant loss. Supplemental results highest per unit water.
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ژورنال
عنوان ژورنال: Agronomy
سال: 2022
ISSN: ['2156-3276', '0065-4663']
DOI: https://doi.org/10.3390/agronomy12051229