A field experiment was conducted at Tamil Nadu Agricultural University, Coimbatore during winter season of 2015-16 and 2016-17 to evaluate the influence of time of sowing and weed management on weed interference and productivity, profitability of Bt cotton hybrid.
Result revealed that, distinctive time of sowing in cotton impacts the weeds and cotton growth. Advance sowing of cotton (1st August) with pre-emergence application of pendimethalin 38.7% CS followed by post-emergence pyrithiobac sodium 5% EC 62.5 g/ha significantly recorded lower total weed density and dry weight and better crop growth, higher seed cotton yield, net return and B: C ratio in both years of the experiment.
From results, it could be concluded that early sowing of cotton on 1st August with higher GDDs decreased the weed interaction. This was accompanied by integrated weed management of pre-emergence application of pendimethalin 38.7% CS 0.68 kg/ha, followed by post-emergence pyrithiobac sodium 5% EC 62.5 g/ha, which resulted in higher weed control efficiency, seed cotton yield, net return, and B:C ratio.
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Madras
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Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
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Madras Agricultural Journal (MAJ)
Madras
Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
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