Identification and Control of Foliar Pests of American Jointvetch
Abstract
American jointvetch, Aeschynomene americana L., a component of grasslegume pastures in Florida, is subject to attack by the noctuid defoliators Selenis monotropa Grote, the velvetbean caterpillar, Anticarsia gemmitalis Hubner, the tobacco budworm, Heliothis viriscens (F.), and the gelechiid leafbinder, Evippe sp. Some biological control is provided by the spiders Misumenops celer (Hentz) and M. bellulus (Banks), the parasitic wasp Euplectrus comstockii Howard, and the entomophagous fungus Nomuraea rileyi (Farlow) Samson. Five insecticides were evaluated for pest control. Diflubenzuron permitted the fewest caterpillars and least leafbinding. Less effective were chlorpyrifos, triflumuron, Upjohn U-47319 (Methyl N-[[[[[(diethoxyphosphinothioyl)isopylamino]thio]methylamino]carbonyl]oxy] ethanimidothioate), and trichlorfon. Reduction in leafbinding can improve seed production by as much as 350%.Downloads
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