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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
Name three most important nutrients required for plant growth.
Write down two advantages of fertilizer over manure
Give a short account of biofertilizers.
Why is irrigation essential ?
Why are leguminous crops desirable in crop rotation?
Mention three different ways in which insect pests can attack the crop plant.
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.
If there is low rainfall in a village throughout the year, what measures will you suggest to the farmers for better cropping?
Differentiate between the following
Mixed cropping and Intercropping
