Simulation of Nitrate Leaching under Maize–Wheat Cropping System in a Semiarid Irrigated Area of the Indo-Gangetic Plain, India

摘要: AbstractThe cost and time involved in frequent field observations pertaining to quantification of nitrate leaching below the crop root zone leads use simulation models, which is a more plausible approach. Nitrate maize–wheat cropping system under surface irrigation was assessed. The model’s predicted results water percolation were line with observed data, mean square error (RMSE) values close zero, index agreement 1. seasonal 120 cm soil depth maize wheat 36.5 27.5% applied water, respectively. Similarly, 18.1 14.3% nitrogenous fertilizer wheat, Under similar conditions, 6.8  kg NO3 ha−1 less than rice–wheat system. Furthermore, und...