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Q: With an increase in the supply of irrigation water, yields of the crops ...........
  • 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
Correct Answer: Option D - With an increase in the supply of irrigation water, yields of the crops increases up-to the certain limit then decreases because in the initial stage the crop requires for growth but when the water is provided beyond the required limit there the certain types of problems like water logging, increase in the salt content etc. happens which decreases the yield of crop.
D. With an increase in the supply of irrigation water, yields of the crops increases up-to the certain limit then decreases because in the initial stage the crop requires for growth but when the water is provided beyond the required limit there the certain types of problems like water logging, increase in the salt content etc. happens which decreases the yield of crop.

Explanations:

With an increase in the supply of irrigation water, yields of the crops increases up-to the certain limit then decreases because in the initial stage the crop requires for growth but when the water is provided beyond the required limit there the certain types of problems like water logging, increase in the salt content etc. happens which decreases the yield of crop.