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United States Department of Agriculture

Agricultural Research Service

Title: Allelochemical Properties of the Tropical Legume Tephrosia Spp. Against the Diaprepes Root Weevil

item Lapointe, Stephen
item McKenzie, Cindy
item Hunter, Wayne

Submitted to: Florida Entomological Society Annual Meeting
Publication Type: Abstract Only
Publication Acceptance Date: June 1, 2002
Publication Date: July 25, 2002
Citation: Lapointe, S.L., Mckenzie, C.L., Hunter, W.B. 2002. Allelochemical properties of the tropical legume tephrosia spp. against the diaprepes root weevil. Florida Entomological Society Annual Meeting.

Technical Abstract: The Leguminosae produce allelochemicals with behavioral and toxic effects. Species of Tephrosia produce a range of flavonoids including isoflavonoid rotenoids with insecticidal activity. We characterized antifeedant and toxic properties of 2 Tephrosia species. T. candida detered adult feeding, reduced oviposition, and increased larval mortality of Diaprepes root weevil compared with T. vogelii and a citrus control. Possible uses of T. candida include a suppressive mulch, intercrop, or source of a Diaprepes-active botanical insecticide.

Last Modified: 4/22/2015
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