An experiment was conducted at Punjab Agricultural University, Ludhiana during 2014-15 and 2015-16, keeping four sowing dates {25th Oct (D), 10th Nov (D), 25th Nov (D) and 10th Dec (D)} in main plots and five irrigation schedules {irrigation at 15 (FC), 25 (FC), 35 (FC) and 45 (FC) % depletion of soil moisture from field capacity (FC) and a conventional practice} in sub plots. The objective of the study was to evaluate the performance of CERES-Wheat model for simulating yield and water use under varying planting and soil moisture regimes. The simulated and observed grain yield was higher in D, with irrigation applied at FC as compared to all other sowing date and irrigation regime combinations. Simulated grain yield decreased by 19% with delay in sowing from 25th October to 10th December because of 8% reduction in simulated crop evapotranspiration. Simulated evapotranspiration decreased by 16%, wheat grain yield by 23% and water productivity by 15% in drip irrigation at 45% depletion from field capacity as compared to drip irrigation at 15% of field capacity. It was further revealed that the model performed well in simulating the phenology, water use and yield of wheat.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8569000 | PMC |
| http://dx.doi.org/10.1016/j.sjbs.2021.06.074 | DOI Listing |
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