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प्रश्न
Write about three main criteria which should be considered while selecting the crops for rotation?
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उत्तर
The main criteria for selecting crops for rotation are as follows:
- Availability of moisture through rain or irrigation;
- Status of nutrients in the soil;
- Availability of inputs such as fertilizers, pesticides, human power and machine power;
- Duration of crop–short or long;
- Marketing and processing facilities.
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संबंधित प्रश्न
How do plants get nutrients?
Explain the term eutrophication with suitable example
Define manure. What are different manures and how do they affect the soil ?
What are fertilizers ? Classify fertilizers.
Give a short account of biofertilizers.
Mention three effects of excessive irrigation.
Define intercropping. How does it differ with mixed cropping?
What are crop's pests? Suggest preventive measures to control pests.
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.
Discuss the various methods which are used to control plant diseases.
