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      Question

      Which meteorological parameter is directly measured by

      using an open pan evaporimeter in the context of irrigation scheduling?
      A Rainfall Correct Answer Incorrect Answer
      B Wind speed Correct Answer Incorrect Answer
      C Solar radiation Correct Answer Incorrect Answer
      D Evaporation Correct Answer Incorrect Answer

      Solution

      Open pan evaporimeters (e.g., Class A pan) measure the rate of evaporation. This data helps in estimating evapotranspiration and irrigation water requirements using methods like IW/CPE ratio.

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