Dynamics of Heliothis spp. 1 Larval Parasitism in Southeast Arkansas 2

Abstract
Heliothis spp., larval parasitism averaged 22.5, 9.8, and 14.9% during 1974, 1975, and 1976, respectively. There was no significant difference in parasitism among plots with one exception. Microplites croceipes (Cresson) was the dominant parasite. Heliothis virescens (F.) larvae were not parasitized at a high rate. There was a significant difference in parasitism shortly after the application of insecticides to the research fields.