This article Citation:

Tej Pratap, V. Pratap Singh, Rohitashav Singh and Rekha. 2016. Herbicides for weed management in direct dry-seeded rice . Indian Journal of Weed Science : 48( 3) 275- 278.







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Volume Issue Publication year Page No Type of article
48 3 2016 275-278 Full length articles
Herbicides for weed management in direct dry-seeded rice

Tej Pratap, V. Pratap Singh, Rohitashav Singh and Rekha

DOI: http://dx.doi.org/10.5958/0974-8164.2016.00067.8

Email: drtpsingh2010@gmail.com
Address: Department of Agronomy College of Agriculture, G.B. Pant University of Agriculture & Technology Pantnagar, U.S.Nagar Uttarakhand 263145

Keywords:

Chemical control, Direct dry-seeded rice, Grain yield, Herbicides, Weed control 



Abstract:

A field experiment was conducted during Kharif seasons of 2010 and 2011 to evaluate the efficacy of different herbicides and their combinations in managing weeds of direct dry-seeded rice. The major weeds were Echinochloa colona, Echinochloa crus-galli, Leptochloa chinensis among grasses, Caesulia axillaris and Trianthema monogyna among broad-leaved weeds and Cyperus rotundus among sedge. The lowest total weed density was recorded with azimsulfuron 35 g/ha and cyhalofop-butyl + ready mix of chlorimuron + metsulfuron 60 + 20 g/ha, which were at par with each other followed by fenoxaprop + ethoxysulfuron 60 + 15 g/ha and twice hand weeding at 20 and 40 days after seeding (DAS). The lowest weed biomass was recorded with combined application of fenoxaprop + ethoxysulfuron 60 + 15 g/ha and fenoxaprop + ready mix of chlorimuron + metsulfuron 60 + 20 g/ha. The highest weed control efficiency was recorded with twice hand weeding at 20 and 40 DAS (89.9%) followed by fenoxaprop + ethoxysulfuron 60 + 15 g/ha, fenoxaprop + ready mix of chlorimuron + metsulfuron 60 + 20 g/ha, bispyribac-sodium 25 g/ha and fenoxaprop 60 g/ha over the weedy check. The higher grain yield (3.50 t/ha) was recorded with twice hand weeding (20 and 40 DAS), which was at par with fenoxaprop + ethoxysulfuron 60 + 15 g/ha followed by bispyribac-sodium 25 g/ha alone and fenoxaprop + ready mix of chlorimuron + metsulfuron 60 + 20 g/ha.





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