Efficacy of bensulfuron methyl plus pretilachlor for controlling weeds in transplanted rice

Field experiment was conducted at Agricultural Research Station, Gangavathi, Karnataka during the wet season of 2006 and 2007 to assess the comparative performance of Bensulfuron methyl plus Pretilachlor combination against the recommended Butachlor application in controlling weeds in transplanted rice. The results revealed that pre-emergence application of Bensulfur on methyl O. 6% plus Pretilachlor 6. 0% G @ 75+ 750 g ha⁻¹, five days after transplanting gave effective control of sedges, grasses and broad leaf weeds. The combination product was found to be non-toxic to rice crop and resulted in higher mean grain yield (6.06 t ha⁻¹), net returns 57624 ha⁻¹) and benefit cost ratio (3.48) than the recommended herbicide Butachlor.