Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Bruchid control with traditionally used insecticidal plants Hyptis spicigera and Cassia nigricans.

Abstract

The efficacy of 2 plant species, Hyptis spicigera and Cassia nigricans, and the effective levels of application (EC50) to suppress bean weevils, Acanthoscelides obtectus in stored cowpeas was investigated. The oviposition and hatching of A. obtectus, under controlled environmental conditions, were reduced following treatment with EtOH extracts (1 g plant material 1 ml EtOH) at low application rates, with EC50 between 0.3 and 14microl extract/g bean. Further field studies are proposed to determine if such natural products can be further exploited to reduce stored legume losses. Authors' summary. KEYWORDS: TROPAG | Vigna unguiculata Hyptis spicigera Cassia nigricans | Post harvest operations | cowpea | storage pests | Acanthoscelides obtectus | pest control biological | medicinal narcotic and biodynamic crops | Hyptis spicigera | medicinal narcotic and biodynamic crops | Cassia nigricans | T.