Weed indices in chickpea + mustard intercropping system

A field experiment consisted of four intercropping systems, viz. sole chickpea, sole mustard, chickpea + mustard (additive series) and chickpea + mustard (replacement series) and six weed management practices, viz. weedy check, weed free, pendimethalin 1 kg/ha as pre-emergence, fluchloralin 1 kg/ha as pre-plant incorporation (PPI), isoproturon 0.75 kg/ha as post-emergence and quizalofop-ethyl 50 ml/ha as postemergence. Results revealed that weed species, Medicago sativa, Anagallis arvensis and Cyperus rotundus with higher relative weed density and dry weed weight were observed. The values of smothering efficiency were higher in additive as compared to replacement treatment. Maximum yield loss was in weedy check in comparison to weed-free plots. Application of pendimethalin at 1 kg/ha gave higher yield of chickpea and mustard along with maximum returns.