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प्रश्न
How does excessive irrigation lead to soil salinity ?
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उत्तर
Excessive irrigation leads to soil salinity as it causes water logging. The evaporation of excess water concentrates salt at the soil surface. This causes an increase in the soil salinity. The crops die as the roots of the crop plants have limited access to oxygen and increased salinity.
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संबंधित प्रश्न
Compare the use of manure and fertilizers in maintaining soil fertility.
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 ?
What is green manuring ? Give suitable examples for green manures.
Why is irrigation essential ?
Distinguish between mixed cropping and intercropping.
Define intercropping. How does it differ with mixed cropping?
Which one is not a source of carbohydrates?
Differentiate between the following
Mixed cropping and Intercropping
