A field study was conducted during 2010-11 and 2011-12 to evaluate the effect of integrated weed management on two lentil associated weeds viz., Chenopodium spp., Cyperus spp. and economics of the weed management packages. Two hand weedings (HW) at 30 and 45 DAS was the most effective method for containing Chenopodium  spp. and Cyperus spp. counts and dry matter from 60 DAS to harvest. Imazethapyr 2EC and pendimethalin controlled the intensity and corresponding dry matter of Chenopodium   significantly but poorly affected Cyperus which was better suppressed with treatment where mechanical weeding was either a component or as a sole treatment. Among sole herbicides, imazethapyr was the most effective for Cyperus and Chenopodium  weed control whereas, pendimethalin incorporated integrated package was effective on Chenopodium  while imazethapyr associated integrated system was effective on Cyperus weeds.  Average weed control efficiency at 75 DAS and crop harvest reflected that two HW was most efficient for control of Chenopodium  (77.6%) and Cyperus (75.3%) followed by pendimethalin 1 kg/ha supplemented with imazathapyr 37.5 g/ha on both the weed species (75.3 and 81.2%), respectively. The effect of sole chlorimuron and quizalofop-ethyl on both the weeds were least, but better than control. Pendimethalin 1 kg/ha fb mechanical weeding recorded better yield attributes, highest yield of lentil and cost: benefit ratio (1.37 t/ha and 2.80) but minimum weed index (4.53),  next to hand weeding. Hand weeding performed well in all aspects except the lower benefit cost ratio. Hence, integration of pendimethalin 1 kg/ha with mechanical weeding (hoeing) was considered to be the profitable treatment besides being more ecofriendly than chemical-chemical sequential application.