International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 5
First page : (1433) Last page : (1438)
Article doi: http://dx.doi.org/10.18782/2320-7051.5980
Influence of Seed Rate and Weed Control Methods on Yield of Direct Seeded Rice (Oryza sativa L.)
Rajneesh Singh1, Abhinaw Kumar Singh2*, Ved Prakash Singh3
Ghanshyam Singh4, and O. P. Rai5
1,3M.Sc. Student, 2Ph.D. Scholar,4,5Proffessor,
2Department of Agronomy, Chaudhary Charan Singh Haryana Agricultural University Hisar – 125004, Haryana
1,3,4,5Department of Agronomy, Narendra Deva University Agriculture & Technology Kumarganj
Faizabad – 222429, U.P.
*Corresponding Author E-mail: dr.singhak99@gmail.com
Received: 21.09.2017 | Revised: 25.10.2017 | Accepted: 28.10.2017
ABSTRACT
A field experiment entitled “Influence of seed rate and weed control methods on yield of direct seeded rice (Oryza sativa L.)” was conducted during kharif season of 2013-14 at Agronomy Research Farm of Narendra Deva University of Agriculture & Technology, Kumarganj, Faizabad (U.P.) to evaluate the efficacy of different herbicides viz., pendimethalin @ 1.0 kg ha-1 Pre emergence (PE), bispyribac-sodium @ 25 g ha-1 (POE) Post-emergence at 30 DAS and ready mix chlorimuron-ethyl @ 4 g ha-1 (POE) Post-emergence at 30 DAS with three seed rate 40,50,60 kg ha-1 to see their effect on weeds, crop growth, yield and economics of rice. Weed free and weedy check were also included in the experiment. The field experiment was layout in randomized block design (factorial) with three replications. Rice variety “NDR-97” was sown by direct line sowing method with recommended dose of fertilizers, 120 kg N, 60 kg P2O5 and 60 kg K2O per hectare. Echinochloa colona & E. crusgalli among grasses, Commelina benghalensis among broadleaf weeds and Cyperus rotundus among sedges were the predominant weeds in experimental field. Uncontrolled weeds in weedy check plots caused an average reduction in grain yield by 66.07 per cent over weed free plots. The lowest weed population and dry weight and highest yield attributes and yield of 25.39 q ha -1 were recorded under 60 kg ha -1 seed rate. In chemical control Post-emergence application of bispyribac-sodium @ 25 g ha-1 at 30 DAS, produced highest grain yield (24.45 qha-1) and reducing population & dry matter of weeds and it lead to highest grain yield.
Key words: Seed rate, Weed control methods, Yield, Direct seeded rice
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Singh, R., Singh, A.K., Singh, V.P., Singh, G., and Rai, O.P., Influence of seed rate and weed control methods on yield of direct seeded rice (oryza sativa L), Int. J. Pure App. Biosci.5(5): 1433-1438 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5980
