Vol. 7, Issue 5 (2019)
Effect of weed management practices on weed density and yield of linseed (Linum usitatissimum L.)
Author(s): Dhananjai Singh, Pradeep Kumar, VK Verma, Ram Pyare and CB Verma
Abstract: An experiment was conducted during Rabi 2018-19 at Oilseed Research Farm, Chandra Shekhar Azad University of Agriculture & Technology, Kanpur to study the effect of pre and post emergence herbicides on weed density, weed biomass, seed yield and economics of linseed. The treatments comprised individual application of oxyflurofen @ 125 g ha-1, oxadiargyl @ 80 g ha-1, imazethapyr 10 SL @ 75 g-1, and metsulfuron methyl @ 4 g ha-1, and mixture of metribuzin @ 25 g ha-1 + oxyflurofen @ 125 g ha-1, pendimethalin 30 EC @ 1.0 kg ha-1 + metsulfuron methyl @ 4 g ha-1, and clodinofop @ 60 g ha-1 + metsulfuron methyl @ 4 g ha-1 compared with hand weeding twice and weedy check. The experimental field was infested mainly with Cynodan dactylon, Cyperus rotundus, Chenopodium album and Anagalis arvensis. The post emergence application of clodinofop @ 60 g ha-1 + metsulfuson methyl @4 gha-1 observed highest weed control efficiency (64.95%) and lowest weed completion index (11.80%). Results revealed that weedy check reduced the seed yield of linseed by 51.22 per cent over hand weeding twice at 20 and 45 days after sowing (DAS). Results exhibited that post emergence application of clodinofop @ 60 g ha-1 + metsulfuron methyl @ 4 g ha-1 registered significantly at par seed yield of 1800 kg ha-1, net monetary return of Rs. 51936 ha-1 and benefit cost ratio of 2.78 compared with hand weeding twice at 20 and 25 DAS could be an alternative for weed management in irrigated linseed, which recorded seed yield (1847.00 kg ha-1) net return of (Rs. 49923.00 ha-1) with benefit cost ratio (2.47).
Pages: 165-167 | 540 Views 87 Downloads
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How to cite this article:
Dhananjai Singh, Pradeep Kumar, VK Verma, Ram Pyare, CB Verma. Effect of weed management practices on weed density and yield of linseed (Linum usitatissimum L.). Int J Chem Stud 2019;7(5):165-167.
