Journal of Plant Protection Research (2005) 45, 1-7

A.M. Oparaeke (2005)
Studies on insecticidal potential of extracts of Gmelina arborea products for control of field pests of cowpea, Vigna unguiculata (L.) WALP: the pod borer, Maruca vitrata and the coreid bug, Clavigralla tomentosicollis
Journal of Plant Protection Research 45 (1), 1-7
Abstract: The insecticidal efficacy of Gmelina arborea L. product extracts was assayed for suitability in controlling the legume pod borer Maruca vitrata Fab. (Lepidoptera: Pyralidae) and the pod sucking bug Clavigralla tomentosicollis Stål (Hemiptera: Coreidae) on cowpea. Field studies conducted in 1999 and 2000 cropping seasons at the research farm of the Institute for Agricultural Research, Samaru showed that extract of Gmelina arborea fruit at 10% (w/v) caused impressive reduction of both pests and protected the pods from serious damage. Grain yield was higher in the fruit extract treated plants compared to the leaf, bark treatments and the untreated control. However, all the Gmelina products' extracts were superior (p < 0.05) to the untreated control but was not better than the synthetic insecticide (Sherpa Plus) used in all the assessments made. This study is the first reported case of the potential of Gmelina arborea products' extracts for control of Maruca pod borer larvae and pod sucking bug on field cowpea. This plant could add to the pool of herbal landraces already found to be insecticidal to insect pests of tropical crops if explored and exploited for use by limited resource farmers in tropical countries.
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Database assignments for author(s): A.M. Oparaeke

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Clavigralla tomentosicollis	Cowpea and relatives (Vigna)	Nigeria
	Maruca vitrata	Cowpea and relatives (Vigna)	Nigeria