Interference of common lambsquarters and wild onion in winter onion

Onion (Allium cepa L.) is one of the important vegetable crops grown in India. The crop yields are reduced by weed infestation due to slow emergence, low initial growth rate, long vegetative period and low competing ability of onion plants MATERIALS AND METHODS Two field experiments were conducted during rabi seasons of 2002-03 and 2003-04 at the National Research Centre for Weed Science, Jabalpur. The soil of the experimental site was clay loam (Typic Chromusterts) in texture, neutral in reaction (pH 6.9) and analyzing low in available N (220 kg/ha), medium in available P (16.0 kg/ ha) and high in available K (465 kg/ha) contents. The treatments consisted of 7 densities of C. album (0, 5, 10, 20, 40, 80 RESULTS AND DISCUSSION Effect of Chenopodium album densities The dry weight of C. album increased at increasing densities from 5 to 160 plants/