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प्रश्न
How does chemical nature of the soil change due to continued use of chemical fertilizers ?
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उत्तर
Use of chemical fertilisers improve soil fertility for a short duration of time. Continued use of chemical fertilisers cause environmental hazards and lead to the destruction of soil fertility. The increased use of chemical fertilisers cause death of soil microorganisms by making the soil toxic for them. Excessive fertilisers added to the soil end up in the nearby water bodies and increase the nutrient content of the water. This leads to algal bloom.
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संबंधित प्रश्न
Why are manures and fertilizers used in fields?
Classify nutrients according to their sources.
Write down two advantages of fertilizer over manure
Give a short account of biofertilizers.
Why are leguminous crops desirable in crop rotation?
Explain various steps in hybridization of crop plants.
What is the advantage of using insect resistant varieties?
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.
Why is organic matter important for crop production?
