In this paper we demonstrated that while E. platyhypenae will
parasitize both fall armyworm strains in the laboratory, it is likely
to be significantly less effective against rice-strain larvae in turf
grass and pasture habitats where stargrass and related Cynodon
spp. grasses are abundant. A higher probability of significant
biological control by augmentative release of E. platyhypenae
would be expected in corn monocultures where the corn strain is
mostly present. In fact, the quickness with which corn-strain larvae
are parasitized when reared on corn under laboratory conditions
suggests that this could be a very effective method of fall
armyworm control in this habitat.