Phytotoxicity of Cinmethylin on Transplanted Rice (Oryza saliva L.) under Varied Puddling and Water Management Practices

摘要

Cinmethylin 75 g/ha showed phytotoxicity symptoms of yellowing and stunted growth in transplanted rice upto 10 and 20 days after its application in phasic submergence plots particularly in normal puddling with irrigation at one day after disappearanceof ponded water. The phytotoxicity symptoms of Cinmethylin disappeared completely at 40 days after its application, irrespective of the puddling and water management practices. At all the puddling and water management practices, oxadiargyl did not showphytotoxic effect on transplanted rice. Significantly the lowest weed density and dry weight with increased stature of growth parameters viz., plant height, LAI, number of tillers per plant and dry matter production were recorded with oxadiargyl 75 g/ha.