Herbicide efficacy, application time, application rate

Penoxsulam was evaluated against complex weed flora both as pre-emergence as well as postemergence herbicide in transplanted rice during kharif 2005 and 2006 at Karnal, Haryana, India. Echinochloa crusgalli, E. colona, Ammania baccifera, Euphorbia sp., Fimbristylis miliaceae and Cyperus sp. were the major weeds. Penoxsulam at 25.0 g/ha as pre-emergence (3 DAT) application and 20.0-22.5 g/ha as post-emergence (10-12 DAT) application provided satisfactory control of weeds consequently resulting in grain yield of transplanted rice similar to the weed free plots. There was no residual toxicity of penoxsulam on succeeding crop of wheat