Coffee Board of Kenya Monthly Bulletins November 1971

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Date
1971
Authors
Okwara, J. W.
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Field experiments comparing six spraying programmes and two fungicides for control of coffee berry disease were carried out at three sites during 1968.These established that protection of the crop by sprays applied throughout the long rains (February-July) gave the best control and increased yields threefold.Early season spray programmes, which reduced the sporulating capacity of the pathogen in coffee twigs,but which ceased before the end of the rainy season, gave no disease control in the late crop (harvested October-December)and yields were less than in unsprayed controls.All programmes which gave protection at the onset of the rains gave some disease control in the early crop (harvested June-August).Captafol ('OrthoDifolatan'80 WP) was better than a 50 per cent copper formulation (,Percnox').
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