Root Mealybugs sip sap from the roots reducing the flow of water and nutrients to the trees. This causes yellowing and drooping of leaves and death of entire trees.
Uproot and burn affected or dead trees. Trees showing early signs of attack should be treated with Dursban mixed into soil around the tree or with Actara.
Coffee Berry Borer (CBB) is a small beetle that bores into coffee berries, damaging beans and reducing yield and quality.
Prune coffee and shade trees to open up canopy and promote natural control by birds. If more than 2-3% of cherries are infected, spray with Super Sumithion.
Coffee wilt disease is caused by a fungus. It only affects Robusta trees and there is no cure.
To control, uproot and burn infected coffee trees as soon as symptoms are seen. Disinfect farm tools that have been used in an infected garden with fire flames or Jik solution. Plant resistant varieties.
Coffee berry disease is caused by a fungus and only affects Arabica coffee. It attacks flowers and fruits at all stages of growth, but especially the green stage.
To control, plant tolerant varieties and practise good field hygiene. Prune coffee and shade trees to reduce humidity levels.