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प्रश्न
Which of the following is not true for fertilisers?
विकल्प
They increase the yield
Their excessive use disturbs the balance of nutrients in soil
They are generally used in small quantity
They are environment friendly
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उत्तर
They are environment friendly
Explanation:
Fertilisers are not environment friendly as they are chemical substances rich in particular nutrients. Though they increase the crop yield, the repeated and excessive use of fertilisers in the same field reduces the soil fertility. It also pollutes water bodies as they get dissolved and washed away by rain and also seeps into the water table posing threats to humans.
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संबंधित प्रश्न
Write a paragraph in your own words of the following.
Sowing
Use your brain power!
What is the purpose of storing foodgrain in our house?
______ is called as farmer’s best friend.
______ is the organic tertillzer.
Analogy:
Used as fertilizer: Gypsum:: Helps nerves function properly: ______.
All the plants get their ______ from the soil.
Pick out the odd one from the words given below and give a reason for it.
During which months do farmers grow mustard in India?
______ is a method of sowing seeds.
