WEED DYNAMICS AND PRODUCTIVITY OF WETLAND RICE AS INFLUENCED BY ESTABLISHMENT METHODS AND INTEGRATED WEED MANAGEMENT

Significantly lower weed density/m(2) and dry weight were recorded in system of rice intensification (SRI) with butachlor 50 EC@ 1.5 kg a.i./ha at 3 DAT + cono-weeding at 20 DAT at par with integrated crop management (ICM). The highest weed control efficiency was recorded with SRI methods and in butachlor 50 EC @ 1.5 kg a.i./ha at 3 DAT + cono-weeding at 20 days after transplanting. The grain, straw and biomass productivity were significantly higher with SRI at par with ICM with highest harvest index. Hand weeding twice at 20 and 40 DAT was recorded highest harvest index at par with butachlor 50 EC@1.5 kg a.i./ha at 3 DAT + cono-weeding at 20 DAT.