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P-ISSN: 2349-8528, E-ISSN: 2321-4902   |   Impact Factor: GIF: 0.565 NAAS Rating: 5.31 NEW

International Journal of Chemical Studies

Vol. 5, Issue 3 (2017)
Optimum time of sowing and weed management methods on weeds interference and productivity and profitability of Bt cotton hybrid in western zone of Tamil Nadu


Author(s): V Hariharasudhan, C Chinnusamy and NK Prabhakaran

Abstract: A field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during 2015-16 to evaluate the influence of time of sowing and weed management on weed interference and productivity, profitability of Bt cotton hybrid. Result reveled that, Distinctive time of sowing in cotton impact the weeds and cotton growth. Advance sowing of cotton (1st August) significantly recorded lower total weed density (80.6 No./m2) and weed dry weight (46.1 g/m2.) and better crop growth, higher seed cotton yield (1454 kg /ha), gross return (Rs. 87220 / ha), net return (Rs. 39227 / ha) and B: C ratio (1.81). In weed management practices, pre-emergence application of pendimethalin 38.7% CS followed by post-emergence pyrithiobac sodium 5% EC 62.5 g/ha recorded lower total weed density (48.0 No. /m2) dry weight (21.68g /m2) and higher weed control efficiency (78.7%), higher seed cotton yield (1640 kg /ha), net return (Rs. 98415 / ha and B: C ratio (2.14).

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How to cite this article:
V Hariharasudhan, C Chinnusamy, NK Prabhakaran. Optimum time of sowing and weed management methods on weeds interference and productivity and profitability of Bt cotton hybrid in western zone of Tamil Nadu. Int J Chem Stud 2017;5(3):793-796.
International Journal of Chemical Studies