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

The effect of irrigation sources viz. shallow tube well irrigation (STW) and harvested pond water irrigation (PW) and nutrient sources (100% recommended dose of fertilizer (RDF), 100% RDF with elevated phosphate (double dose of recommended), 75%RDF +FYM@ 10t ha⁻¹, 75%RDF + FYM@ 10t ha⁻¹ with elevated phosphate] on yield and accumulation and uptake of arsenic by green gram 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 @ 10t ha⁻¹ with elevated phosphate proved to be the best in reducing arsenic accumulation in both the crops