Practice Crop Coefficients and Reference ET (ET₀) - 20.8 | 20. Measurement of Evapotranspiration | Hydrology & Water Resources Engineering - Vol 2
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Knowledge

20.8 - Crop Coefficients and Reference ET (ET₀)

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does ET₀ represent?

💡 Hint: Think of the ideal conditions for well-watered grass.

Question 2

Easy

What is a crop coefficient?

💡 Hint: Remember how different crops require different water amounts.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does the crop coefficient (Kₐ) represent?

  • The evapotranspiration rate from a reference crop
  • A factor that adjusts ET₀ for specific crops
  • An average temperature value

💡 Hint: Think about how each crop has its own water needs.

Question 2

True or False: ET₀ is only relevant for irrigated crops.

  • True
  • False

💡 Hint: Consider the broader applications of ET₀ in agriculture.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given a reference ET₀ of 7 mm/day, calculate the total water need for a field of tomatoes with an average Kₐ of 0.8 over 30 days. What would be the total water application?

💡 Hint: You need to multiply the Kₐ, the daily ET₀ rate, and the number of days.

Question 2

A mixed crop farm has 50% maize, 30% soybeans, and 20% wheat. The respective Kₐ values for these crops are 1.2, 0.7, and 0.9. What would the weighted average Kₐ be for irrigation calculations?

💡 Hint: Combine each Kₐ value multiplied by its respective fraction of the total crop area.

Challenge and get performance evaluation