Effect of Sowing Methods and Weed Management Practices on Crop Nutrient Uptake and Weed Nutrient Removal in Rice (Oryza sativa L.)
Field Experiments were conducted at Agronomy Research farm, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya (Uttar Pradesh, India), during Kharif season of 2024 and 2025.The study was carried in a split plot design with 3 replications. In main plot 3 rice establishment methods and in sub plot 5 weed management practices were included. The results revealed that transplanting methods of sowing registered the highest nitrogen, phosphorous and potassium uptake by rice crop and lowest nutrient removal through weeds. Among weed management practices, maximum uptake by rice with respect to nitrogen, phosphorous and potassium and minimum removal by weed regarding N, P and K was recorded in treatment hand weeding at 15, 30, 45 and 60 DAS/DAT which was observed statistically at par with pre application of pendimethalin @ 1000 g a.i. ha-1 f/b brown manuring by bispyribac sodium @ 25 g a.i. ha-1 at 25 DAS/DAT. Among different weed management practices, combined application of pendimethalin @ 1000 g a.i. ha-1 f/b brown manuring by bispyribac sodium @ 25 g a.i. ha-1 or hand weeding 15, 30, 45 and 60 DAS/DAT was found effective in controlling weeds and increase in the quality and quantity of rice. Among the establishment method transplanting was found effective in increase in the yield, nutrient content of the crop and substantially reduction of nutrients removed by weed in rice field.