Effect of Different Weed Management Practices on Growth and Yield of Rice (Oryza sativa L.)
Neha Ansary *
Department of Agronomy, Hemwati Nandan Bahuguna Garhwal University, Srinagar, Uttarakhand, India.
*Author to whom correspondence should be addressed.
Abstract
A field experiment was conducted during Kharif season of 2024 at Crop Research Farm of Center for Agriculture and Farmer Development, Sahaspur, Dehradun, Uttrakhand. The experiment consisted of eight treatments laid out in Randomized Block Design and replicated three. Minimum weed dry weight (g/m2) 30,60,90 DAS and at harvest (0.71, 0.71, 1.67, 1.82), Weed Control, Effciency % at harvest (94.37), Weed Index (0.00), Plant height at 30,60,90 and at harvest (34.90,66.60,92.00,101.00), Dry matter accumulation (g m-2) at 30,60,90 DAS and at harvest (258.00,829.80,12.76.60,1484.50), Leaf area index at 30,60,90 DAS (2.10, 4.45,4.88) and grain yield (63.25 q/ha), straw yield (85.20 q/ha), biological yield (148.45 q/ha), harvest index (42.61%), Net return (71672 Rs/ha) and B:C Ratio (2.37) was recorded in treatment 7 weed free till 60 DAS.
Keywords: Rice, herbicide, growth, yield and economics