Document Type : Original Article
Authors
1 Agriculture and Forestry University, Rampur, Chitwan, Nepal
2 College of Natural Resource Management, Agriculture and Forestry University, Marin, Sindhuli, Nepal
Abstract
The productivity of spring rice is higher than the main season (summer) rice in Nepal although the production is less. Eliminating the competitive effect of weeds can add to increased crop yield and biomass production. Herbicides, one of the methods of weed control, offer numerous advantages over traditional manual weed control; however, they also have negative effects on the environment, which can be mitigated through the implementation of an integrated weed control approach. A field experiment was carried out at Bateshwor, Dhanusha, Nepal involving different combinations of manual weeding, pretilachlor and bispyribac-sodium to determine their impact on the weed dynamics in spring rice (Cv. Hardinath-1). The most prominent weed flora in the experimental plot comprised of 8 weed species (3 broad-leaf weeds, 3 grasses and 2 sedges). Weeds were most persistent when manual weeding was performed although both weed density and dry weight were highest in Control. Least weed density and dry weight were found when both pretilachlor and bispyribac-sodium were used at 20 days after transplanting. Weed control efficiencies were better in this combination which ultimately resulted in the highest grain yield and the highest BC ratio.
Keywords
Main Subjects
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Citation: Bidhan Bagale*, Rubi Kumari Sah. 2024. Effect of Weed Management Practices on Weeds in Spring Rice in Nepal, Journal of Agricultural Sciences and Engineering, 6(1), 1-7.
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