Comparative Performance of Different Herbicides on Direct Seeded Rice (Oryza Sativa L)

Abstract

A field experiment was co.nducted in rice during kharif season-201 0 on sandy loam soil at Crop Research Center of Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut (UP). The experiment aimed to find out the best herbicide or herbicide mixture in direct seeded rice for purposes of more yield of rice as compared to weedy check. The twelve treatments consisting in the, i.e. Pyrazosulfuron @ 25 g ha-1 • , Pretilachlor @ 750 g ha-1 , Cyhalofopbutyl @ 90 g ha-1 , Fenoraprop @ 60 g ha-1Cyhalofopbutyl+ Almix @ 90 + 20 g ha-1 , Fenoxaprop + Almix @ 60 + 20 g ha-1 , Azimsulfuron @ 35 g ha-1 , Bisyribacsodium @ 25 g ha-1 , Fenoxaprop + Ethoxysulfuron @ 60 + 15 g ha-1 , Oxyfluorfen + 2, 4-D @ 300 + 500 g ha-1 , Two hand weeding (25 and 50 DAS) and weedy check with one factor and Randomized Block Design. Study revealed that post-emergence application of Bispyribacsodium @ 25 g ha-1was found significantly superior over rest of the treatments in respect of more plant population, tallest plant, more panicle weight, more filled grain per panicle and highest 1000 grains weight. Bispyribacsodium @ 25 g ha-1 gave the highest rice grain and straw yield. The highest net return and benefit: cost ratio also was found in this treatment. The lowest grain yield, straw yield, net return and benefit : cost ratio was found in weedy check.