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Symptoms and Nature of damage of Thrips

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Symptom of attack of Thrips: Affected nurseries present a pale yellow colour with brown tips. On passing the wet palm over the top of the seedlings a large number of black adults and yellowish nymphs may be seen striking to the palm. The infestation invariably disappears after sharp showers.

Nature of damage of Thrips: Both the adults and nymphs lacerate the tender leaves and suck up the plant sap. As a result fine yellowish lines or silvery streaks are seen on the leaves. Later, the leaves curl longitudinally and begin to dry from the tip downwards.

In severe cases, the entire nursery may dry up and fail to produce seedling. Sometimes transplanted crop is also affected in the early stages.

File Courtesy: 
ZARS, Mandya
Photo Courtesy: 
CRRI
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