We examined the effects of strip-intercropping soybean,Glycine max, and sorghum,Sorghum bicolor, on rates of insect parasitism and fungal disease incidence in larvae of the green cloverworm,Plathypena scabra(F.), a widespread and occasionally serious pest of soybeans, during an endemic year. A completely randomized design with two cropping systems (monocropped soybean and soybean intercropped with sorghum), two sorghum heights (dwarf sorghum ≈1 m in height; tall sorghum ≈2 m in height), and two row patterns (2 rows of sorghum alternating with 10 rows of soybean; 6 rows of sorghum alternating with 6 rows of soybean) was used. Abundance (number per row-meter) ofP. scabralarvae, rates of larval parasitism and incidence of the entomopathogenic fungus,Nomuraea rileyi(Farlow) Sampson did not differ significantly among treatments or their interaction. Soybean yield (grams dry weight of beans per row-meter) did not differ significantly among treatments but sorghum grain yield and biomass (grams dry weight per row-meter) were significantly lower in dwarf sorghum planted in wide rows because of competing weed populations. Results suggest that neither the accrual ofP. scabralarvae in soybean nor the impact of the parasitoid-pathogen complex onP. scabramortality is affected by structural or taxonomic agroecosystem diversification at the scale studied. n