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Viruses are transmitted by vecotors such as whitefly Bemisia tabaci,aphids Myzus persicae and Aphis gossypii, leaf hoppers Amrasca sp., thrips Thrips palmi and Scirtothrips dorsalis
Destruct residues of previous crop
Remove alternate hosts
Use healthy planting materials
If transplanted, manage the seedlings in a protected nursery
Use recommended fertilizers
Use barriers (net tubes/vegetation) to prevent entrance of vectors
Practise mulching
Treat the seeds (refer yellow direct control)
Monitoring
Use yellow sticky traps (1/100m2) to monitor whiteflies, aphids etc
Observe for leaf curling, yellowing mosaics or yellowing veins, stunting, rosetting, mottling, oil spots on fruits and deformed fruits
Direct Control
Remove and destroy virus infected plants
Spray neem seed kernel extract – NSKE (30-40g seeds )/1 lit) once in 7 days to control vectors
Direct Control
Restrictions
Apply recommended insecticides once or twice paying attention to the recommended pre harvest intervals
Read the label recommendations and pre harvest intervals before use
Avoid use of insecticides with same mode of action more than twice per season
For seed treatment – Thiamethoxam 70%WG. Application rate – 3.5g /1kg of seeds. Soak seeds in an aqueous mixture 24 hours before planting
