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Question
With an increase in the supply of irrigation water, yields of the crops
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A.
Decrease continuously
B.
Increase continuously
C.
Increase up to a certain limit and then becomes constant
D.
Increase up to a certain limit and then decrease
Answer ( Option D)

Increase up to a certain limit and then decrease

Solution

Yield of the crops, with the supply of irrigation water, increases but abundant supply of irrigation water tempts the cultivators to use more water than required.

Which would raise ground water table and will lead to water logging.

Excessive moisture clogs the voids and circulation of air and deficiency leads to extra pull, which retards the growth.

Hence, the correct option is (D).

 

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