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प्रश्न
What are crop's pests? Suggest preventive measures to control pests.
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उत्तर
Crop's pests are the organisms that destroy the growing crop plants by causing great economic loss. There are various pests of crop plants such as weeds, insects, mites, rodents, fungi, bacteria, and viruses.
Crop's pests can be controlled by following measures:
(i) Use of pesticides (insecticides, weedicides, and fungicides) that kill the insects, weeds, and fungal pests.
(ii) Use of resistant crop varieties.
(iii) Crop rotation and multiple cropping.
(iv) Clean cultivation.
(v) Sowing crops at optimum time.
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संबंधित प्रश्न
How plants get nutrients ?
Name three most important nutrients required for plant growth.
Compare the use of manures and fertilizers in maintaining soil fertility.
How does chemical nature of the soil change due to continued use of chemical fertilizers ?
How does excessive irrigation lead to soil salinity ?
Explain the objectives of mixed cropping.
Define intercropping. How does it differ with mixed cropping?
Classify plant diseases depending upon their occurrence and transmission.
Mention three different ways in which insect pests can attack the crop plant.
Explain the methods of controlling insect pests.
