Effect of Deficit Irrigation Practice on Nitrogen Mineralization and Nitrate Nitrogen Leaching under Semi-Arid Conditions

Agricultural sector acts as a major consumer of water which accounts for 70 percent global freshwater use. Water scarcity an imminent threat to agriculture, there is need use those irrigation and management practices that could overcome this overwhelming situation scarcity. Lab incubation study was designed evaluate the effect different moisture levels (50%, 60%, 70%, 80%, 90%, 100% FC) on nitrogen mineralization rate. Net shown at 60% 80% FC levels. Two optimized (I0.6 I0.8) along with four dairy manure (10, 15, 20, 25 Mg ha-1) were used in lysimetric trial. Nitrate-nitrogen measured depths (D1: 30 cm, D2: 60 D3: 90 D4: 120 cm). Results showed strong interaction all depths. Mean maximum nitrate-nitrogen concentration under full cm soil depth application DM ® ha-1. Under two deficit irrigation, I0.8 has DM25, however, level I0.6 restricted movement up depth, high found depth. We concluded practice resulted more upper layer where it can be available crops.