A field experiment entitled “Weed screening in grass based cropping system in Central India” was conducted at Research Farm, Department of Agronomy, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh during 2018-2019 to 2019- 2020 both consecutive year with eight grass based cropping systems. The recommended dose of 150 kg N, 80 kg P2O5 and 40 kg K2O ha-1 was applied through urea, single super phosphate and muriate of potash. Dominant weed flora were Cynodon dactylon, Echinochloa colona, Alternanthera sessilis, Cyperus rotundus and Cyperus iria during kharif season and Cynodon dactylon , Chenopodium album, Medicago truncatula, Anagallis arvensis, Spergula arvensis, Vicia Sativa and Cichorium intybus were found during rabi season under different grass based cropping system. The highest total weed intensity (320.0 and 311.0 m-2), total weed biomass (90.4 and 89.8 g m-2) were recorded under guinea grass sole crop during both the year respectively. The maximum important value index (IVI) of Cynodon dactylon 36.33 and 30.82) was noted kharif season and (30.62 and 34.82) rabi season under guinea grass sole crop rduring both the years as compared to rest of the grass based cropping systems. Whereas the lower IVI value was in pearlmillet napier (PN) hybrid sole crop (4.90 and 7.24) during both the years respectively.