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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
What are macro-nutrients and why are they called macronutrients?
Name three most important nutrients required for plant growth.
Write down two advantages of fertilizer over manure
How does chemical nature of the soil change due to continued use of chemical fertilizers ?
Why is irrigation essential ?
Describe the biological method of weed control.
Give two examples each of
(a) Narrow leaved rabi season weed.
(b) Broad leaved kharif season weed.
What are crop's pests? Suggest preventive measures to control pests.
Discuss the various methods which are used to control plant diseases.
Which one is not a source of carbohydrates?
