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Indian Journal of Weed Science
Year : 2011, Volume : 43, Issue : 3and4
First page : ( 217) Last page : ( 221)
Print ISSN : 0253-8040. Online ISSN : 0974-8164.

Effect of different weed management practices on weed density and weed dry matter production in system of rice intensification (SRI)

Dewangan Devendra*, Singh A.P., Nirala H., Verma M.

Department of Agronomy, IGKV, Raipur (Chhattisgarh)

*E-mail: devendewangan@gmail.com

Online published on 19 November, 2012.

Abstract

The twelve different weed management practices were laid out in randomized block design with three replications. Rice variety “MTU-1010” was grown as a test crop. Rice was transplanted with a spacing of 20 x 20 cm and fertilized with 90, 60 and 40 kg/N, P and K/ha, respectively. At later period of growth, maximum panicle length, number of seeds/panicle, WCE, weed density, dry matter accumulation under post-emergence fb post-emergence application of fenoxaprop-p-ethy (60 g/ha)+ ethoxysulfuron (15 g/ha) favoured significant enhancement in seed yield which was at par with hand weeding. Application of postemergence fb post-emergence application of fenoxaprop-p-ethyl (60 g/ha) + ethoxysulfuron (15 g/ha) gave higher net return (Rs 3,4249.72/ha) and benefit: cost ratio (1.72)

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Keywords

Herbicides, Weed control, SRI, Mechanical weeding.

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