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प्रश्न
Why are leguminous crops desirable in crop rotation?
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उत्तर
Leguminous crops are desirable in crop rotation because they maintain the supply of nitrogen in the crop fields. These crops are alternated with others so as to minimise the need of nitrogenous fertilisers. Nitrogen fixers in leguminous crops fix the atmospheric nitrogen and makes it available to the crop plants. These are mostly used in the crop fields where nitrogen supply is less.
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संबंधित प्रश्न
Explain advantages of irrigation.
Explain, how efficiency of irrigation can be increased.
Classify plant diseases depending upon their occurrence and transmission.
Mention three different ways in which insect pests can attack the crop plant.
Give two examples each of
(a) Narrow leaved rabi season weed.
(b) Broad leaved kharif season weed.
Explain various methods of weed control.
What are crop's pests? Suggest preventive measures to control pests.
What is the advantage of using insect resistant varieties?
Define irrigation. Why is irrigation of crops essential? Mention the harmful effects of excessive irrigation.
Differentiate between the following
Mixed cropping and Intercropping
