Fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), oviposition on paper towels treated with water extracts of corn leaves, FAW larvae, larval frass, and artificial diet was reduced significantly compared with towels treated only with the solvent. Carrageenan was the component in the artificial diet responsible for oviposition deterrence. Aqueous extracts from two sweet corn cultivars grown outdoors in pots deterred oviposition, but only one, ‘Pioneer X304C’, a FAW-resistant cultivar, did so when grown outdoors or in the greenhouse. Extracts of ‘Pioneer X304C’ leaves with other solvents also deterred FAW oviposition. In field-cage experiments, oviposition was reduced significantly on ‘Pioneer X304C’ corn plants sprayed with aqueous extracts of either ‘Silver Queen’ or ‘Pioneer X304C’ leaves.
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Williams et al. (1986) studied this question.