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Why is excess use of fertilisers detrime...

Why is excess use of fertilisers detrimental for environment?

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Fertilisers should be applied scientifically in terms of proper dose time pre and post application precaution of their complete utilisation. Excess fertilisers usually get washed away through irrigation rainfall etc. and pollute rivers lakes streams causing algal bloom toxicity and eutrophiciation.
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NCERT EXEMPLAR ENGLISH-IMPROVEMENT IN FOOD RESOURCES-Short Answer Questions
  1. Fill in the blanks (a) Pigeon pea is a good source of "" (b) Berse...

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  2. What is a GM crop ? Name any one such crop which is grown in India .

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  3. List out some useful traits in improved crop ?

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  4. Why is organic matter important for crop production?

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  5. Why is excess use of fertilisers detrimental for environment?

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  6. Give one word for the following (a) Farming without the use of chemi...

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  7. Match the following column I and II

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  8. If there is low rainfall in a village throughout the year. What measur...

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  9. Group the following and tabulate them as energy yielding protein yield...

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  10. Define the tern hybridisation and photoperiod.

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  11. Fill in the blanks (a) Photoperiod affect the "" (b) Kharif crops...

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  12. Cultivation practices and crop yield are related to environmental cond...

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  13. Fill in the blanks (a) A total of "" nutrients are essential to pla...

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  14. Differentiate between compost and vermicompost?

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  15. Arrange these statements in corrent sequence of preparation of green ...

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  16. An Italian bee variety A mellifera has been introduced in India for ho...

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  17. In agricultural practices, higher input gives higher yield. Discuss ho...

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  18. Discuss the role of hydridisation in crop improvement.

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  19. Define "(i) Vermicompost"" ""(ii) G...

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  20. Discuss various methods for weed control.

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