Plant Protection Science (2006) 42, 125-129

J. Hubert, M. Nemcová and V. Stejskal (2006)
The toxicity of bean flour (Phaseolus vulgaris) to stored product mites (Acari: Acaridida)
Plant Protection Science 42 (4), 125-129
Abstract: Legume proteins were shown to have insecticidal activity against stored-product pests. Grain enriched by bean (Phaseolus vulgaris) flour inhibits the growth of stored-product mites. In this study, we tested the toxicity of bean flour to storage mites under optimal conditions for their population growth (i.e. rearing diet, temperature 25°C and humidity optimum 85% RH). Bean flour was added to the diet in one of eight concentrations: 0, 0.01, 0.1, 0.5, 1, 2.5, 5, 10%). The population growth of Tyrophagus putrescentiae, Acarus siro and Aleuroglyphus ovatus initiating from a density of 50 mites per 0.2 g of diet was recorded for 21 days. The enrichment of grain with bean flour suppressed the population growth of the tested species. These differed in their sensitivity to bean flour. Population growth was decreased to 50% in comparison to the control (rC₅₀) by the bean flour concentration of 0.02% in T. putrescentiae, 0.04% in A. siro, and by4.87% in A. ovatus. The concentration of 5% bean flour in diets kept populations of A.siro and T. putrescentiaeat the initial level. The results are discussed in the context of applying bean flour in the integrated control of stored-product mites.
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Database assignments for author(s): Jan Hubert, Vaclav Stejskal

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.
	Tyrophagus putrescentiae
	Acarus siro
	Aleuroglyphus ovatus