Symptoms of damage
- Infestation causes purple discolouration on fruits and make them unfit for marketing
- Infestation of shoots results in loss of vigour and death of young trees or branches
- Fruit with haloes will be culled because of its unsightly appearance.
Identification of pest
- Female scale is yellowish orange, round, slightly convex and raised a little at the centre with a black pustule
- Males are small and more linear shape
Management
- Select nursery stock free from scale infestation
- Spray application of systemic insecticides like phosalone 0.05% and methyl demeton 0.025%
- Field release of coccinellid predators like Chilocorus nigritus and parasitoid, Encarsia pernios
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Purple discolouration - stems |
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Purple discolouration - fruits |
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