Effect of Irrigation and Chlorsulfuron Applied in Wheat on Germination and Residual Toxicity of Succeeding Crops

摘要

To evaluate the residual effect of irrigation and chlorsulfuron applied in wheat on succeeding crops, a field experiment was conducted during rabi and kharif seasons of 1999 and 2000 at Research Farm of Chaudhary Charan Singh Haryana Agricultural University, Hisar, India. Irrigation levels had no significant effect on germination as well as there was no residual phytotoxicity on cotton, rice and moongbean; however, these were higher in maize, sorghum and pearl millet under five irrigation levels. Chlorsulfuron had no effect on germination of cotton, moongbean and rice and also there was no residual phytotoxity on rice crop. But the germination of maize, sorghum and pearl millet was significantly decreased due to chlorsulfuron at 45 and 60 q/ha applied in wheat and also there was residual toxicity on cotton and moongbean at these doses. Residual phytotoxicity on maize, sorghum and pearl millet was recorded even at lower levels of chlorsulfuron i. e. at 20 and 30 g/ha.