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PEST MANAGEMENT DECISION GUIDE: GREEN LIST

Coffee berry disease

Colletotrichum kahawae
  • Only use seeds and planting material from certified, disease free sources.
  • Use of resistant coffee varieties such as Ruiru 11, Batian and BM 139.
  • Prune trees after harvest so to open spaces between plants, improve aeration and reduce shade as these can reduce fungal spread.
  • Remove old stems as these are more susceptible to infection.
  • Control weeds in the plantation and surrounding area to reduce host avalability for the fungus.
  • Ensure suitable soil management practices, do not overwater the soil and appropriate application of fertilizer (follow product directions).
  • Undertake regular monitoring of crops, especially during wet and cold periods.
  • Symptoms of infection include:
    • Brown/black spots on berries, may appear sunken in the fruit.
    • Lesions on the stalks of young fruit which can cause premature dropping.
    • Masses of pink spores visible to the human eye, commonly found on lesions.
    • Berries may turn entirely black.
  • Consider direct control actions as soon as any symptoms appear in your crop.
  • Actively remove infected berries, collect and destroy by burning or burying 60 cm deep in the ground.
  • Actively remove weeds and overgrowing plants to reduce shade.
  • Graft resitant varieties.

CREATED/UPDATED: September 2018
PRODUCED BY: Plantwise

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