during its gradual transformation into irrigated land. To this end, salinity balances were carried out and the nitrate … salinity and increased nitrate concentration in drainage. The increase in the volume of drainage increased the masses of salt … and nitrate exported, which in turn increased pollution indices during the transition. However, these indices were still …

Water Assessment Tool (SWAT). …

, AquaCrop, developed by FAO, was adapted for cabbage (Brassica oleracea L.) using a limited dataset and leave-one-out cross-validation …

conducted at the research farm of the Water Technology Centre, IARI, New Delhi during kharif 2009 and 2010. Calibration was done … using the data of 2009 and validation with the data of 2010. Irrigation applications comprised rainfed, i.e. no irrigation ….42, 0.9<R2<0.91 and 0.17<MAE<0.51tha−1. Upon validation, the E was 0.95 and 0.98; MAE was 0.11 and 1.08 and RMSE was 0.1 and …

resulted in different approaches being used to simulate impeded N movement in crop models: (i) by accounting for nitrate NO3 … calibration, often results in low confidence in simulated N leaching. We caution that our current ability to simulate N leaching …

In the design of wood-based, enhanced-denitrification bioreactors to treat nitrate in agricultural drainage, the … consideration of the highly variable flow rates and nitrate concentrations inherent to many drainage systems is important. For … optimized mitigation of these nitrate loads, it may be best to contain drainage water prior to treatment in order to facilitate …

using a simple computation procedure and measurements of soil water content and water balance, nitrate concentrations in … higher proportion of arable crops. The average nitrate concentration was 52.7±38.63mgNO3L−1 under a pure crop rotation … grassland sequences into this arable crop rotation caused a marked reduction in the nitrate levels in groundwater, and the …

average daily runoff and soil and nutrient loss during both the calibration and validation periods. Moreover, results indicate … that SWAT-GC model is capable of adequately modeling differences in nutrient yields between the different tillage practices …The ArcSWAT2009 model with an improved sub-model (SWAT-GC) was used to assess plant growth to evaluate sediment and …