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Impact of Manual and Chemical Control Over Weeds in the Direct Wet-seeded Rice (Oryza sativa L.)

Keywords: Rice , oryza sative , herbicides , hand weeding , chemicals

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Abstract:

Study on rice (Oryza sativa L.) trial on cultural and chemical weed control was carried out during Kharif 2000. Different weeds under the direct wet-seeded rice crop were controlled by using cultural techniques as well as by the use of chemicals (rice herbicides). Weedy check was also kept in both the factors. Weeds were effectively controlled with herbicides and culturing method. Maximum tillers per m2 (928.10), 1000-grains weight (27.67 g) and highest paddy yield (8.89 t ha -1) were recorded from Rifit. The said herbicide also controlled the weed and gave minimum dry weed biomass (9.58 g). While in the other case, hand weeding after 6 weeks of seeding showed the best results.

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