Division of Agronomy, Indian Agricultural Research Institute, New Delhi-110 012, India.
Phalaris minor and Avena sativa were found to be major weeds in rice-wheat system while Echinochloa sp. and Cyperus sp. in rice-rice and Cyanotis axillaris, Euphorbia hirta and Ipomea aguatica in rice-mung+sesame system. Zero tillage reduced the population of Phalaris minor and Chenopodium album.
