Coffee Board of Kenya Monthly Bulletins April 1946

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Date
1971/ 1972
Authors
Griffiths, E.
Waller, J. M.
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Coffee Board of Kenya
Abstract
Both the increase in severity and extent of coffee berry disease (CBO) during the 1960s and the failure of early-season sprays to control it have been attributed to changes in climatic conditions and cropping patterns. A critical analysis of rainfall data since 195 1, when CBO first appeared in the East Rift coffee districts of Kenya, produces no evidence that conditions affecting CBO development were any different in the 1960s than in the 1950s, in either high or low altitude coffee-growing areas. A marked increase in overlapping crops occurred during the late 1950s, and this was caused mainly by a change in pruning methods. The increased disease hazard from this change of cropping pattern cannot account for the failure of early season sprays, which were successful before , 1962.
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