Leaching Loss of Nitrogen in Submerged Rice Cultivation

Abstract

SUMMARYNitrogen was lost through leaching, both asand, even after application of the ammoniacal form in a reduced soil zone. Under saturation the loss was more through, and under submergence throughnitrogen. The loss was accelerated when all the nitrogen was applied at one time at the early stage of crop growth. Application at transplanting proved unproductive. Three split application at active vegetative, reproductive and ripening phases helped to give maximum responses in both alluvial clay and lateritic sandy clay loam soil.