| Volume |
Issue |
Year |
Page No |
Type |
PDF Download |
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48
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4
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2016
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442
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444
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Short communications
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Impact of different herbicides and their combinations on production economics of winter rice in West Bengal
S.K. Sarkar, B.C. Patra, K. Jana and K. Ghosh
DOI :
http://dx.doi.org/10.5958/0974-8164.2016.00113.1
Email :
sandiptakumarsarkar16@gmail.com
Address :
Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Kalyani, West Bengal 741 235
Keywords
B:C ratio, Chemical control, Economics, Hand weeding, Winter rice, Weed management
Abstract
Hand weeding twice at 20 and 40 days after transplanting (DAT) gave best results in reducing both weed density and biomass and ultimately increased the grain (4.53 t/ha) and straw yield (5.80 t/ha). Next highest grain (4.20 t/ha) and straw yield (5.57 t/ha) was obtained with bensulfuron-methyl + pretilachlor (granules) 10 kg/ha as pre-emergence + one hand weeding at 40 DAT treatment followed by combined herbicidal treatment bensulfuron-methyl + pretilachlor (granules) 10 kg/ha as PE + bispyribac-sodium 25 g/ha as post emergent gave grain yield 4.17 t/ha and straw yield 5.53 t/ha. Considering the benefit: cost ratio, the highest value (1.92) was obtained with the performance of bensulfuron-methyl + pretilachlor as PE + metsulfuron-methyl + chlorimuron-ethyl as POE.