Email:
sushmasarojsurin5@gmail.com
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Department of Agronomy, Birsa Agricultural University, Ranchi, Jharkhand 834 006, India
Conservation tillage, Direct-seeded rice, Economics, Rice-wheat system, Weed control
The present experiment was carried out in a split-plot design with four tillage practices in the main plot and three methods of weed control practices in sub plot with four replications at agronomical research farm of Birsa Agricultural University, Ranchi during 2009-10 to 2010-11 to find out the effective tillage methods adopted in direct-seeded rice and wheat with different weed control methods. Results revealed that in direct-seeded rice density of grassy, broad-leaved weeds and sedges accounted for 23.1, 59.2 and 17.7% and in wheat, grassy and broad-leaved weeds accounted for 5.7 and 94.3% respectively of total weed density. Conventional tilled plots had more number of weeds per unit area as compared to zero tilled. Conventional tilled both rice and wheat produced 25.3, 11.9 and 11.4% higher mean rice equivalent yield compare to mean yield due to other tillage combination. Two hand weeding (20 and 40 DAS for rice and 25 and 50 DAS for wheat) and application of recommended herbicides being at par gave higher rice equivalent yield than weedy check.