Kamla Gandharv, Navneet Kumar Mishra, Damini Thawait* and N.K. Choubey
Department of Agronomy, Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.), India
Received-25.11.2014, Revised-03.01.2015
Abstract: Results revealed that, FYM @ 5 t ha-1 (F1) has significant impact on total tillers m-2 and effective tillers m-2. Hand weeding twice at 25 & 45 DAS (W7) produced significantly highest number of effective tillers meter-2, test weight (g). Highest grain yield (4.21 t ha-1) , straw yield (5.52 t ha-1) and harvest index (51.54 %) was recorded under hand weeding twice at 25 & 45 DAS (W7), followed by Chemical weeding with bispyribac Sodium @ 20 g ha-1 25 DAS (W1), which gave grain yield (4.03 t ha-1), straw yield (5.25 t ha-1) and harvest index (51.37 %) . The lowest was recorded under unweeded check (W8). In the experimental field, Commelina benghalensis L., Cyanotis axillaris Schult. F., Cyperus difformis L., Echinochloa colona (L.) Link, Monochoria vaginalis (Burm.f.) Kunth were dominant weeds. The lowest weed density, weed dry matter production and relative weed density were recorded under hand weeding twice at 25 & 45 DAS (W7), followed by Chemical weeding with bispyribac Sodium @ 20 g ha-1 25 DAS (W1).
Keywords: Oryza sativa, Weed management, Yield
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