National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The field experiment was carried out at college farm, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad during kharif, 2014 with ten weed management practices with an object to find out the most effective weed management practice in Bt cotton. Uncontrolled weed growth during crop growing season resulted in yield loss of upto 86%. Increased yield of 62.6 to 85.9% was observed with various weed management practices. More number of boles per plant (23) kapas yield plant-1 (92 g plant-1 ) and kapas yield (1427 kg ha-1) were noticed with mechanical weeding thrice at 20, 40 and 60 DAS and was significantly differed from all other treatments under study, but it was followed by pre emergence application of pendimethalin @ 1000 g ha-1 followed by 2 hand weedings at 20 and 50 DAS, inturn and was onpar with pre emergence application of early post emergence application of pyrithiobac-sodium + quizalofop- p- ethyl @ 62.5+50 g ha-1 fb manual weeding at 50 DAS. Higher gross returns (Rs 53513), net retuns (Rs 26763) and B.C ratio (2.0) also obtained from mechanical weeding thrice at 20, 40 and 60 DAS with lower weed drymatter, weed density and higher WCE.
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