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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
Compare the use of manure and fertilizers in maintaining soil fertility.
How plants get nutrients ?
Explain various methods of fertilizer application
What are fertilizers ? Classify fertilizers.
Give a short account of biofertilizers.
Why are leguminous crops desirable in crop rotation?
Classify plant diseases depending upon their occurrence and transmission.
Give two examples each of
(a) Narrow leaved rabi season weed.
(b) Broad leaved kharif season weed.
Explain various types of irrigation systems in India. How can efficiency of applied water be increased in agriculture.
Differentiate between the following
Mixed cropping and Intercropping
