Rapid nitrification in agricultural process results in substantial losses of nitrogen from the system of plant-soil through leakage and emission for which regulation of nitrification is necessary. Some chemicals and bioproducts have already been reported to inhibit nitrification. The present study was taken up to see the effect of salcake on regulating nitrification process in soil. It was found that the use of sal cake in presence or absence of chemical fertilizer was quite effective in reducing the release of nitrate nitrogen. The population of nitrifying organism was positively correlated with release of nitrate nitrogen. It also made considerable reduction in nitrification rate. The best effect was noticed when combined application of sal cake and neemcake was made.