The Role Of Parasitoids In Regulation of Beanfly Ophiomyia spp Complex At Kakamega Kenya

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Date
1997
Authors
Benard M N
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Benard M N
Abstract
Investigations were carried out on the phenology of beanflies (Ophiomyia spp.) and their parasitoids under different cultural practices (cropping system and different fertilizer levels) in the field in Kakamega, Western Kenya. Three species of beanflies Ophiomyia spencerella (Greathead) , Ophiomyia phaseoli (Tryon) and Ophiomyia centrosemantis (de Meij) were recorded. Of these, o. spencerella was the dominant species constituting over 94% of the beanfly complex in Kakamega while o. phaseoli and o. • centrosemantis constituted 4% and 2% respectively. Beanflies appeared in the field 1-2 weeks after crop emergence and their population rose significantly to a peak 3-4 weeks after crop emergence only to stabilize thereafter.
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