Effect of Soil Water on Pattern of Nitrogen Release during Decomposition of Added Greenmanure Residue

In a laboratory experiment, the effect of soil water on pattern of release of NH₄-N and NO₃-N during decomposition of added greenmanure residue was studied. The NH₄-N accumulation increased significantly with decrease in soil water but the release of NO₃-N was reverse. The rate of NO₃-N reiease was 14 times less in case of 0.9 MPa soil water level as compared to 0.01 MPa level. The total mineral-N production and rate of mineral-N accumulation were also significantly lowered with decrease in soil water level.