Effect of Crop Establishment Methods, Weed Management and Splitting of N on Rice and Associated Weeds

A field experiment was conducted at N. D. University of Agriculture & Technology, Kumarganj, Faizabad during kharif seasons of 1997 and 1998 to assess the effect of crop establishment methods, weed management and splitting of N on rice and associated weeds. Results revealed that transplanting method of rice establishment recorded lowest number of weed flora and weed dry weight while recorded significantly higher grain and straw yield. Application of anilofos at 0.4 kg ha⁻¹ + hand weeding (once) at tillering stage controlled the associated weeds effectively and hence significantly increased the yield of rice and decreased the dry weight of weeds over anilofos applied alone at 0.4 kg ha⁻¹. Split application of N 1/2 as basal1/2 tillering+1/4 panicle initiation stage recorded significantly higher yield of rice and lowest dry weight of associated weeds. Highest weed dry matter production 90.8 g m⁻² was significantly recorded under dry seeding with anilofos 0.4 kg ha⁻¹ and splitting of N 1/2 as basal+'A tillering+1/2 panicle initiation stage over rest of the treatment combinations.