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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
Distinguish between farmyard manure and compost manure.
What are fertilizers ? Classify fertilizers.
Mention three effects of excessive irrigation.
Why water should be used judiciously ?
Explain the advantages and disadvantages of mixed cropping.
Write down disadvantages of crop rotation.
Classify plant diseases depending upon their occurrence and transmission.
If there is low rainfall in a village throughout the year, what measures will you suggest to the farmers for better cropping?
Cultivation practices and crop yield are related to environmental conditions. Explain.
Differentiate between the following
Mixed cropping and Intercropping
