Leaching Loss of Nitrogen in Submerged Rice Cultivation

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Abstract
SUMMARY Nitrogen was lost through leaching, both as and , even after application of the ammoniacal form in a reduced soil zone. Under saturation the loss was more through , and under submergence through nitrogen. 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.
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