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Paper Details

Effect of weed management practices on yield attributes, yield and economics of rice var. MTU-1010 under system of rice intensification

DEVENDRA KUMAR DEWANGAN* AND GOURAV JATAV

Journal Title:International Journal of Agricultural Sciences
Abstract


The present experiment was conducted at Research cum-Instructional Farm, Department of Agronomy, Indira Gandhi Krishi Vishwa Vidyalaya, Raipur (C.G.) duringKharif season of 2009 to find out the effect of weed management practices on plant height, no. of tillers, SPAD value, dry matter accumulation, grain yield and net return of rice var. MTU-1010 under system of rice intensification. The twelve different weed management practices were laid out in Randomized Block Design (RBD) with three replications. Rice variety MTU-1010 was grown as a test crop. Rice was transplanted on 27th July, 2009 with a spacing of 20 x 20 cm. The crop was fertilized with 90, 60 and 40 kg N, P2O5 and K2O ha-1, respectively.The results of experiment indicated that growth character like plant height, number of total tillers, chlorophyll content, CGR, dry matter of rice, at initial period of crop growth responded significantly better under two ways mechanical weeding performed at 12, 25 and 35 DAT and this was followed by one way mechanical weeding. At later period of growth, significant higher number of effective tillers, total tillers, number of grains panicle-1, panicle length, weed index, straw yield and grain yield were produced under fenoxaprop-p-ethyl 60 g ha-1 + ethoxysulfuron 15 g ha-1 at 20 and 35 DAT, which was at par with hand weeding, fenoxaprop-p-ethyl 60 g ha-1+ ethoxysulfuron 15 g ha-1 at 20 DAT + MW performed on two ways at 35 DAT. It was also observed that all the herbicides treatments were effective and significantly enhanced the grain yield over control. In the experimental field was dominated by mainly Echinocloa colona, Alternanthera triendra, Cyperus iria, Fimbristylis miliacea throughout the crop season

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