Abstract:
An experiment was conducted during rainy (
kharif) season of 2011 and 2012 to find out the best weed management technique and crop establishment method of rice (
Oryza sativa L.). Both of the transplanting methods being at par recorded significantly higher values of plant height, leaf-area index and grain yield over direct seeding methods. Among weed management practices, two hand weeding (30&50 days) and Bispyribac-Na 25 g ha
-1 followed by manual weeding at 50 days at par recorded significantly lower weed weed density & weed dry weight of weeds over Bispyribac-Na 25g ha
-1 alone and weedy check treatments. Amongst all the interaction, the maximum grain yield was observed in both of transplanting methods being at par significantly with two hand weeding and Bispyribac-Na 25 g ha
-1 at 30 days stage being at par proved significantly. The highest weed control efficiency (89.67%) was recorded in two hand weeding, followed by herbicide + one hand weeding, the highest net profit (Rs 61,372 ha
-1) was obtained from the combination of conventional transplanting with herbicide + one hand weeding. However, the highest value of benefit: cost ratio (2.33) was recorded in the treatment with drum seeding with bispyribac Na 25g ha
-1 at 30 days.