Seasonal variations in the sporulating capacity of the fungus causing coffee berry disease

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Date
1969
Authors
Nutman, F. J.
Roberts, F. M.
Freeman, G. H.
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Abstract
Assessments of the sporulating capacity of Colletotrichum coffeanum Noack in coffee branches (defined as the number of conidia produced per cm2 per hour under optimum conditions) have been made for 4 years on a number of different sites in Kenya. An annual rhythm is evident which is essentially similar on all sites and for all years. Early-season and late-season peaks are separated by a mid-season trough. The change in sporulating capacity at any time is negatively correlated with wetness in the immediately preceding period, and daily rainfall can be used as a measure of wetness. The position of the peaks and their duration is defined by the timing of the onset and the duration of the monsoon rains, and is, therefore, subject to considerable variation.
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East African Agricultural And Forestry Journal, 64, p. 85-99
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