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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
What are advantages of using manure ?
Write down two advantages of fertilizer over manure
Define manure. What are different manures and how do they affect the soil ?
What is green manuring ? Give suitable examples for green manures.
Give a short account of biofertilizers.
Explain why a legume crop does not require nitrogenous fertilizers ?
Why is irrigation essential ?
Mention three different ways in which insect pests can attack the crop plant.
Explain what will happen if in a cultivated field only manures are supplied and in another field only fertilizers are supplied, keeping all other conditions similar.
Explain various types of irrigation systems in India. How can efficiency of applied water be increased in agriculture.
