Performance of green gram and dry season rice in arsenic uptake under different management options in West Bengal

摘要

The effect of irrigation sources viz. shallow tube well irrigation (STW) and harvested pond water irrigation (PW) and nutrient sources (100% recommended dose offertilizer (RDF), 100% RDF with elevated phosphate (double dose of recommended), 75%RDF+FYM@ lOtha~(-1) 75%RDF + FYM @10 ha~(-1) with elevated phosphate] on yield and accumulation and uptake of arsenic by greengram and rice in dry season were investigated during 2007-08 and 2008-09. PW led to higher grain and straw yield in rice, as compared to STW, while, no significant difference was observed in green gram. Application of 75%RDF+FYM@10 t ha~(-1) with elevated phosphate favoured yield of both the crops. The arsenic accumulation was much higher in summer rice compared to green gram. Accumulation and uptake was much lower with PW, compared to STW. 75%RDF + FYM @ 10 t ha~(-1) with elevated phosphate proved to be the best in reducing arsenic accumulation in both the crops