This article Citation:

K. Kalaichelvi*, S. Sakthivel and A. Balakrishnan. 2015. Integrated weed management in groundnut . Indian Journal of Weed Science : 47( 2) 174- 177.







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Volume Issue Publication year Page No Type of article
47 2 2015 174-177 Full length articles
Integrated weed management in groundnut

K. Kalaichelvi*, S. Sakthivel and A. Balakrishnan

DOI:

Email: kalaiagronomy@gmail.com
Address: Tapioca and Castor Research Station, Yethapur, Tamil Nadu 636 119

Keywords:

Groundnut, Integrated weed management, Lay by application, Seed pod yield, Weed control efficiency



Abstract:

Field experiment was conducted to study the influence of integrated weed management practices on seed pod yield in groundnut at Agricultural Research station, Vaigaidam during Rabi 2011-12. Weed control efficiency was higher with pre-emergence application of oxyfluorfen at 0.25 kg/ha followed by hand weeding on 20 DAS and pendimethalin at 0.75 kg/ha followed by a hand weeding on 20 DAS at different intervals of 10, 25, 40 and 60 DAS. Weed density of sedge was significantly lowered with preemergence application of oxyfluorfen at 0.25 kg/ha on 3 DAS. Number of pods per plant and seed pod yield was significantly higher with pre-emergence application of pendimethalin at 0.75 kg/ha, alachlor 1.0 kg/ha) and oxyfluorfen at 0.25 kg/ha followed by hand weeding at 20 DAS. Layby application of pendimethalin at 0.75 kg/ha at 3 and 45 DAS after earthing up was also at par with pre-mergence herbicide followed by hand weeding. Phytotoxicity symptoms has been observed with layby application of oxyflourfen 0.25 kg/ha on 45 DAS after earthing up and this resulted lower yield even if this treatment has recorded lesser weed density.





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