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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
Write down two advantages of fertilizer over manure
Explain the term eutrophication with suitable example
Mention three effects of excessive irrigation.
Explain advantages of irrigation.
Distinguish between mixed cropping and intercropping.
Mention three different ways in which insect pests can attack the crop plant.
Explain the mechanism of compost formation.
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.
Define irrigation. Why is irrigation of crops essential? Mention the harmful effects of excessive irrigation.
Differentiate between the following
Mixed cropping and Intercropping
