There is increasing interest in utilising Trichogramma egg parasitoids against helothis(Helicoverpa spp. ) in cotton, and crops that may act as sources of parasitoids for cotton -such as sorghum. Very little has been published on the effect of different release rates ofwasps against helothis.Here we report on field trials evaluating different release rates of Trichogrommo pretiosumagainst Hencoverpa armigera in the sorghum and cotton at Evanslea on the easternDarling Downs.