Effect of cultural practices on the development of arabica coffee berry disease, caused by Colletotrichum kahawae

Mouen Bedimo Joseph Aubert, Bieysse Daniel, Njiayouom Ibrahim, Deumeni Jean Pierre, Cilas Christian, Nottéghem Jean-Loup. 2007. Effect of cultural practices on the development of arabica coffee berry disease, caused by Colletotrichum kahawae. European Journal of Plant Pathology, 119 (4) : 391-400.

https://doi.org/10.1007/s10658-007-9169-x

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Résumé : In the high altitude regions of Africa, coffee berry disease (CBD), caused by Colletotrichum kahawae, is the main constraint for arabica coffee (Coffea arabica) production. However, certain agricultural practices can reduce losses caused by the disease and thereby promote optimum production. On small family farms in Cameroon, mixed cropping with fruit trees, intercropping with food crops and maintenance pruning of coffee trees are very widespread agricultural practices that can affect CBD epidemics. Consequently, an epidemiological study was conducted to assess how cultural practices affected the disease in an arabica coffee smallholding in Cameroon. The disease was monitored on a weekly basis over four successive years (2002-2005) on coffee trees in diverse cultural situations. Cultural practices likely to reduce losses due to CBD were identified. The infection rate was significantly lower on coffee trees grown intensively than on coffee trees grown in the traditional manner. Coffee trees located under the shade of fruit trees were significantly less attacked than those located in full sunlight. In addition, berries on the leafless parts of branches, near the main trunk of the coffee tree, were less infected than those on leafy sections. These results show that maintenance pruning, removal of mummified berries, and mixed cropping with shade plants are cultural practices which create environmental conditions that limit CBD development.

Mots-clés Agrovoc : Colletotrichum, Coffea arabica, épidémiologie, pratique culturale, plante d'ombrage, culture en mélange

Mots-clés géographiques Agrovoc : Cameroun

Mots-clés complémentaires : Colletotrichum kahawae

Classification Agris : H20 - Maladies des plantes
F08 - Systèmes et modes de culture
F01 - Culture des plantes

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

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