Surfactant, herbicide efficacy, increased grain yield
A field study was carried out at Kathalagere, Karnataka in red loamy soil to evaluate the effectiveness of azimsulfuron on weed control, crop safety and grain yield of transplanted rice. Associated major weeds were Echinochloa glabrescence, Cyperus sps., Scripus roylei, Fimbristylis miliacea, Ludwigia parviflora, Lindernia verbenaefolia and Glinus oppositifolius. Hand weeding twice (20 and 40 DAT) recorded lower weed dry weight and higher mean rice grain and straw yield. Among the herbicides, application of azimsulfuron @ 30 g a. i./ha+0.2% nonionic surfactant applied at 19 DAT recorded higher mean rice grain and straw yield