Effect evaluation of rice (Oryza sativa) general herbicide on yield and yield component in intermission flooded conditions

ABSTRACT: In order to evaluate of rice (Oryza sativa) general herbicide in intermission flooded conditions and control of weeds include Barnyard grass (Echinochloacrusgalli), Sedges (Jancus) and Broadleaves, one study was carried out in randomized complete block design with 14 treatment and 4 replications during 2010. Treatment were: Butachlor 60% EC, Pertilachlor 50% EC, Oxadiargy l30% EC, Pendimethalin 33% EC, Molinate 72% EC, Thiobencarb 50% EC, Clodinafop-propargyl 8% EC, Fenoxaprop 57% EW, 2,4-D 72% SL, Propanil 36% EC, Bentazone 48% SL at 4, 2, 3.4, 4, 6, 6, 0.6, 1, 2, 15 and 3 Lit/ha respectivly and Cinosulfuron 20% WG at 150 g/ha. The results indicated that “Pertilachlor + Pertilachlor” treatment based on EWRC standard evaluation and also 3471 kg/ha grain yield had the best output in comparison other treatments Also “Thiobencarb + mixed of Bentazone and Propanil”, "Oxadiargyl + mixed of Bentazone and Propanil" and " Butachlor + mixed of Bentazone and Propanil" treatments with 3454, 3390 and 3349 kg/ha yield respectively had had acceptable yield in comparison three time handweeding check treatment with 3044 kg/ha yield.