Symptoms of attack and nature of damage
- Nymphs and adults suck sap from undersurface of the leaves
- Honeydew excrete – development of sooty mould fungus
Identification of the pest
- Nymphs are yellow, greenish-brown or dark pink, flat and oval. ‘H’shaped yellow mark (Half grown scales)
- Adult female is hemispherical, body is covered by a brown hard shield.
Management
- Control ants as in the case of mealy bugs.
- Remove and burn weeds which harbour the scale.
- Spray the affected patches quinolphos 25 EC @ 120 ml using a gator sprayer in 200 l of water and add 200 ml of any agricultural wetting agent in 200 l of the spray solution.
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| Brown scales on coffee leaf |
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