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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
For growing a crop, sufficient sunlight and _________ and _________ from the soil are essential.
______ is called as farmer’s best friend.
______ help plant grow and restore soil fertility.
Analogy:
Organic fertilizer: Compost:: Inorganic fertilizer: ______.
Define Principal nutrients.
Differentiate between organic and inorganic fertilizer.
All the plants get their ______ from the soil.
Pick out the odd one from the words given below and give a reason for it.
State whether the following statement is True or False. Correct the false statement.
Using good quality seed is the only criterion to get high yield
