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Field experiments were conducted during Kharif 2018 to evolve a suitable weed management practices for irrigated hybrid maize. The experiments were laid out in randomized block design, replicated thrice with fifteen treatments viz., T1-Atrazine @0.25 kg a.i /ha as pre-emergence + hand weeding on 30 DAS, T2-Pendimethalin @0.75 kg a.i/ha as preemergence + hand weeding on 30 DAS, T3Alachlor @ 0.2kg a.i/ha as pre-emergence + hand weeding on 30 DAS, T4Atrazine @0.25 kg a.i /ha as pre-emergence + early post emergence tembotrione 100g ha -1 on 21 DAS, T5Pendimethalin @0.75 kg a.i/ha pre-emergence + early post emergence tembotrione 100g ha on 21 DAS, T6Alachlor @ 0.2 kg a.i/ha as pre-emergence + early post emergence tembotrione 100g ha on 21 DAS, T7Atrazine @0.25 kg a.i /ha as pre-emergence + twin wheel hoe weeding on 30 DAS, T8Pendimethalin @0.75 kg a.i/ha preemergence + twin wheel hoe weeding on 30 DAS, T9Alachlor @ 0.2 kg a.i/ha pre-emergence + twin wheel hoe weeding on 30 DAS, T10-Maize + cowpea without weeding, T11-Maize + cowpea + hand weeding on 30 DAS, T12Maize+cowpea + pendimethalin @0.75 kg a.i/ha as pre-emergence, T13-Hand weeding on 15 and 30 DAS, T14-Weed free, T15-Weedy check. From the results, its concluded that atrazine @ 1.5 kg a.i / ha + twin wheel hoe at 30 DAS proved most effective in controlling weeds followed by alachlor @ 0.2 kg a.i/ha pre-emergence +twin wheel hoe on 30 DAS and they reduce the weed density and increased weed control efficiency significantly, which in turn increased yield compared with unweeded control. Significantly highest grain yield were recorded under atrazine @ 1.5 kg a.i / ha + twin wheel hoe at 30 DAS followed by alachlor @ 0.2 kg a.i/ha as pre-emergence + twin wheel hoe on 21 DAS. The highest net returns and highest benefit: cost ratio were obtained under atrazine @ 1.5 kg a.i / ha + twin wheel hoe on 30 DAS followed by alachlor @ 0.2 kg a.i/ha pre-emergence + twin wheel hoe on 30 DAS.

STUDIES ON INTEGRATED WEED MANAGEMENT PRACTICES IN IRRIGATED HYBRID MAIZE