Crop Protection :: Pests of Citrus
Cottony cushion scale: Icerya purchasi
Symptoms of damage
- Nymphs and adults suck the sap from leaves
- Honey dew excretion
- Development of sooty mould fungus
Identification of pest
- Egg: White, ribbed masses that hold up to 800 red eggs
- Nymphs: Are red with black legs and antennae
- Adults: Are covered in white hair
Management
- Spray dormant oil in late winter before spring
- Spray horticultural oil, if needed, year round
- Apply mixture of manure compost tea, molasses, citrus oil
- Garlic-pepper tea also helps
- Natural predators usually keep this insect in check
- Control ants and dust which can give the scale a competitive advantage
- Field release of vedalia and Australian ladybugs
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Cottony cushion scale |
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