Vol. 3, Issue 6, Part E (2017)

Abstract
Dimethyldithiocarbamate (DMDTC) and diethyldithiocarbamate (DEDTC) complexes of molybdenum (Mo), tungsten (W) and platinum (Pt) along with sodium diethyldithiocarbamate were screened for retarding nitrification in soil at three different concentrations i.e. 10 µg g-1 soil, 50 µg g-1 soil, and 100 µg g-1 under laboratory conditions. After 21 days, soil samples were treated with solutions / suspensions of metal complexes and analyzed for KCl-extractable ammonium-N and nitrate-N to estimate the extent of nitrification and then per cent nitrification inhibition was calculated. Molybdenum dimethyldithiocarbamate proved to be most effective in inhibiting nitrification in soil at 100 µg g-1 soil