Title: Effect of weed management practices with new generation herbicides in transplanted rice
Abstract: A Study was conducted during Samba season of 2017 to evaluate the efficacy of pre and post emergence herbicides in transplanted rice in Cuddalore district. The new herbicides evaluated were Pretilachlor 6% + Pyrazosulfuron-ethyl 0.15% GR @ 10 kg ha-1 along with post emergence herbicides Fenoxaprop-p-ethyl 9.3% w/w @ 875 ml ha-1, Bispyribac-sodium 10% SC @ 200 ml ha-1. Results of the study revealed substantial reduction in weed biomass in all the herbicide treated plots compared to weedy check. Pre-emergence herbicide application followed by application of post emergence herbicides recorded lower weed control efficiency. The highest grain yield (5163 kg ha-1), straw yield (7654 kg ha-1), net return (Rs. 52070 ha-1) and BCR (2.52) were obtained with application of Pretilachlor 6% + Pyrazosulfuron-ethyl 0.15% GR @ 10 kg ha-1 on 3 DAT + Bispyribac-sodium 10% SC @ 200 ml ha-1on 20 DAT (T7). The least weed biomass, grain and straw yield, net income and return rupee-1 invested were accounted with un weeded check. On the basis of the above results, it can be concluded that application of Pretilachlor + Pyrazosulfuron-ethyl + Bispyribac-sodium (T7) hold promise as an appropriate method of weed management for obtaining higher yield and net income in transplanted rice and it was on par with twice hand weeding.
Publication Year: 2019
Publication Date: 2019-05-01
Language: en
Type: article
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Cited By Count: 3
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