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प्रश्न
Mention three different ways in which insect pests can attack the crop plant.
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उत्तर
Following are the three ways in which an insect pest can attack the crop plants:
1. Chewing insects: They destroy all kinds of crop plants by cutting root, stem, and leaf of plants with their chewing mouth parts. Examples: Locusts, grasshoppers, etc.
2. Sucking insects: They destroy the crop plant by sucking the cell sap from its various parts. Examples: Aphids, leaf hoppers, etc.
3. Internal feeders: They live inside the parts of plants. These are called borers (if they live in twigs or roots) or weevils (if they live in fruits and seeds). Examples: Pod borers and grain weevil.
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संबंधित प्रश्न
Distinguish between micronutrients and macronutrients. Give suitable examples.
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Explain various methods of fertilizer application
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What is the advantage of using insect resistant varieties?
Explain the various preventive measures against insect pests.
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