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Jan R.,Sher-e-Kashmir University of Agricultural Sciences and Technology | Ram T.,Sher-e-Kashmir University of Agricultural Sciences and Technology | Singh P.,Project Directorate for Farming System Research ICAR | Ram D.,Sher-e-Kashmir University of Agricultural Sciences and Technology | And 2 more authors.
Indian Journal of Ecology | Year: 2015

The experiment was conducted to find out the suitable combination of plant population, water levels and different weed management techniques for optimum growth and yield of rice. During the investigation it has been found that plant density of 44 hills m-2proved superior to 55 hills m-2 for grain yield, whereas highest straw yield was recorded with 55 hills m-2 Highest grain and straw yield were also recorded with 5 cm water regimes followed by 10 cm compared to 15 cm. Among different weed management practices, application of butachlor provided effective control of weeds and improving rice yield. The combination of 44 hills m-2, 5 cm water regime and butachlor helped to improve grain yield of transplanted rice followed by 44 hills m-2, and 10 cm water regime and butachlor (apart from weed free). Growth parameters like plant height, tillers m', leaf area index, dry matter production were significantly favoured by 55 hills m-2 as compared to 44 hills m-2 with water regimes 5 cm followed by 10 cm as compared to 15 cm. Besides weed free, application of butachlor significantly increased plant height, number of tillers m-2 dry matter production and leaf area index. Weed study like weed count, weed dry matter, weed index and nutrient uptake by weeds significantly reduced with 55 hills m-2 than 44 hills m-2 and 55 hills m-2 weeds significantly reduced with 15 cm as compared to 10 cm and 5 cm. But 15 cm also proved significantly better measure for recording weed control efficiency. Source

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