Jassid (Amrasca devastans)<\/strong><\/p>\n Description<\/strong> – Egg is curved, elongated and yellowish white in colour and deeply embedded in the midribs of large vein on the undersurface of the leaf. The nymphs are wedge shaped. Pale yellowish green and remain in the lower surface of leaves during daytime. Fore wings and vertex have black spots. Adults are 3mm long, greenish yellow during the summer acquiring a reddish tinge in the winter.<\/span><\/p>\n \n<\/div> Symptoms<\/strong> – Nymphs and adults suck the sap from underside of the leaves and introduce salivary toxins that impair photosynthesis in proportion to the amount of feeding. The attacked leaves turn pale and then rust red. Leaves turn downwards, dry up and fall into the ground (Hopper burn). Owing to the loss of plant vitality the cotton bolls also drop off. The pest causes up to 35% reduction in yield.<\/span><\/p>\n \n<\/div> Crops affected – <\/b>Cotton<\/a> \n<\/div> Management<\/strong> – Sow the crop early. Do not use high doses of \u201cN\u201d fertilizers. Use yellow sticky trap. Use Jassid tolerant varieties.<\/span><\/p>\n Any one of the following insecticides<\/a> can be used in 250 litre of water.<\/span><\/p>\nSymptoms<\/h2>\n
Crops Affected<\/h2>\n
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