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प्रश्न
What is the advantage of using insect resistant varieties?
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उत्तर
Advantage of using insect-resistant varieties is that it reduces the use of insecticides. This will help in maintaining the soil fertility for a longer period of time, as harmful chemicals present in insecticides will not be added to the soil. It will also reduce the cost of crop production by removing the expenditure of buying insecticides.
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संबंधित प्रश्न
How do plants get nutrients?
Compare the use of manure and fertilizers in maintaining soil fertility.
Compare the use of manures and fertilizers in maintaining soil fertility.
Write down two advantages of fertilizer over manure
Distinguish between mixed cropping and intercropping.
Write about three main criteria which should be considered while selecting the crops for rotation?
Mention three different ways in which insect pests can attack the crop plant.
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Define irrigation.
Explain the various preventive measures against insect pests.
