Phytoparasitica (2000) 28, p. 89 (Belmain et al.)

S.R. Belmain, P. Golob, H.F. Andan, J. Atarigiya, F.A. Chare and P. Carr (2000)
Toxicity and repellency of ethnobotanicals used in Ghana as postharvest protectants
Phytoparasitica 28 (1), 89-89
XIVth International Plant Protection Congress (IPPC) - Neem (Azadirachta indica), July 25-30, 1999, Jerusalem, Israel, lecture
Abstract: Four postharvest insect pests (Callosobruchus maculatus, Rhyzopertha dominica, Sitophilus zeamais, Prostephanus truncatus) were involved in laboratory trials to establish their susceptibility to 12 plant species that are traditionally used as storage protectants by rural farmers in Ghana. Insect deterrency to plant-treated commodities (admixed powder, 5% w/w) was demonstrated by choice bioassays which showed that R. dominica preferred untreated commodity when the treatment was Cissus populnea, Mitragyna inermis, Chamaecrista kirkii or Azadirachta indica. P. truncatus was significantly deterred by the plant species C. populnea, Ocimum americanum, Citrus sinensis, Capsicum annuum and C. kirkii. Toxicity trials using three different concentrations (admixed powder, 0.5%, 1.0%, 5.0% w/w) showed significant dose-response mortalities and reduced F1 emergence against all four insects when the commodity was treated with Securidaca longipedunculata, C. kirkii, C. sinensis or A. indica. At F1 emergence, S. longipedunculata and C. kirkii showed mortalities as high as 90% when admixed at 5% w/w, giving resource-poor farmers cost-effective alternatives to synthetics. We acknowledge the help of the British Department for International Development (DFID, formerly ODA) for financing this project, and the Ghanaian Ministry of Agriculture for permission to conduct and publish this research.
Database assignments for author(s): Steven R. Belmain

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.
	Callosobruchus maculatus		Ghana
	Sitophilus zeamais		Ghana
	Rhyzopertha dominica		Ghana
	Prostephanus truncatus		Ghana