Effect of weed management on growth and yield of onion (Allium cepa L.)

Abstract

A field experiment entitled “effect of weed management on growth and yield of onion (Allium cepa L.)” was undertaken during Rabi 2011-12 and 2012-13 in farmer’s field of Deogarh district of Odisha. Among the nine treatments taken, the highest weed control efficiency (100%), plant height (60.63 cm), Number of leaves (8.80), leaf area (427.67 sq. cm), average bulb weight (92.65 g), total yield (315.76 q ha-1) and zero per cent weed control index were observed in weed free check followed by weed control efficiency (75.75%), plant height (58.77 cm), Number of leaves (8.60), leaf area (410.87 sq. cm), total yield (308.52 q ha-1), 2.31% weed control index and highest BC ratio (2.73:1) with application of pre-emergence spray of Oxyfluorfen 23.5% EC @ 0.25 kg ai ha-1 + post-emergence spray of ½ dose of (Quizalofop ethyl 5% EC @ 0.05 kg ha-1 + Oxyfluorfen 23.5% EC @ 0.25 kg ai ha-1) at 40 DAT.