Effect of carbofuran on transformation of urea nitrogen in soil

Abstract

THE effect of Carbofuran at 10 and 50 ppm of soil on transformation of urea nitrogen in a sandy loam (PH 7-7) was studied in laboratory. The insecticide had no effect on urea hydrolysis but moderately inhibited both conversion of NH4+ to N02- and N02- to N03-, the effect being pronounced at the higher rate but lasted upto 2 weeks only. The results 0'£ the study along with other evidences suggest that under normal field application rates, carbofuran may have little effect on the hydrolysis as well as nitrification of urea nitrogen in soils with pH in the alkaline range