Author(s):

Sagar Dhage S and VK Srivastava

Abstract: Experiment was carried out at Banaras Hindu University, Varanasi. The results indicated that, weed flora of the experiment plot comprised of fourteen weed species belonging to seven families. Sedges and grasses were the most dominant species at early growth stage of rice, but with the advancement of time, sedges and grasses were gradually replaced by broadleaf weeds. Weed density and weed dry matter was lower in weed-free up to 60 DAS (W₃). Weedy check (W₄) showed the highest weed density and weed dry matter. Among cultivars, significantly lower weed population and weed dry matter was recorded in DRR Dhan-44 (V₁) and higher weed density and weed dry matter was recorded in DRR Dhan-46 (V₅). Weed control efficiency was recorded to the tune of 76.17 – 100 %, with highest in weed-free up to 60 DAS (W₃) (100 %) and lowest in weed-free up to 30 DAS (W₁) (76.17 %). Among cultivars, Weed control efficiency was to the tune of 61.39 – 67.87 %, with highest in DRR Dhan-44 (V₁) (67.87) and lowest in DRR Dhan-46 (V₅) (61.39 %). Weed free up to 60 DAS (W₃) and Weed free up to 45 DAS (W₂) were statistically on par and Weed free up to 45 DAS (W₂) is effective in arresting weeds and to prevent yield losses as compared to other weed management treatments and among different varieties, DRR Dhan-44 (V₁) is found most competitive and effective in minimizing the population of weeds, weed dry weight and nutrient depletion by weeds.

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