Question

Consider the following for Crop Evapotranspiration estimation approaches A. Modified Blaney-Criddle method is only temperature based B. Modified Penman Monteith method requires more climate data C. Thornthwaite method is based on temperature data D. Crop coefficient is multiplied to get reference evapotranspiration by Pan evaporation method E. Radiation method requires air temperature and sunshine radiation Choose the correct answer from the options given below:

• A. A, B, D Only
• B. B, D, E Only
• C. A, C, E Only
• D. B, C, E Only

Hint:

Important ET estimation methods:
• Thornthwaite \(\rightarrow\) Temperature based
• Penman-Monteith \(\rightarrow\) Requires multiple climatic data
• Radiation method \(\rightarrow\) Uses radiation and temperature
• Pan evaporation: \[ ET_0 = K_p \times E_{pan} \] Memory Trick: \[ \boxed{ \text{“Penman needs many parameters”} } \]

Answer 1

The Correct Option is D