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Issue |
Year |
Page No |
Type |
PDF Download |
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53
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1
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2021
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54
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58
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Research article
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Bio-efficacy of weed management practices in rainfed potato
S.K. Yadav, T.K. Bag, A.K. Srivastava and V.P. Yadav
DOI :
http://dx.doi.org/10.5958/0974-8164.2021.00007.1
Email :
sanjaybhu05@rediffmail.com
Address :
ICAR- Central Potato Research Station, Shillong, Meghalaya 793 009, India
Keywords
Herbicide
Metribuzin
Potato
Tuber crop
Abstract
A field experiment was conducted during 2013-14, 2014-15 and 2015-16 at ICAR-Central Potato Research Station, Shillong to evaluate the bio-efficacy of weed management practices in rainfed potato under North-Eastern hill region of India. Maximum potato tubers yield (21.3 t/ha) was recorded under weed free treatment followed by metribuzin application 0.75 kg/ha as a pre-emergence (PE). Reduction in crop yield due to presence of weeds was 54.0 per cent. Maximum uptake of nutrients, viz. nitrogen (113.2 kg/ha), phosphorus (14.5 kg/ha) and potassium (89.4 kg/ha) were recorded by the potato under weed free fb application of metribuzin 0.75 kg/ha as a PE. The highest net returns ( 176100/ha) and B:C ratio (2.3) were recorded under the metribuzin application 0.75 kg/ha. Thus, application of metribuzin 0.75 kg/ha as PE was found more effective in potato under the rainfed ecosystem of North-Eastern hill region of India.