Practice Lysimeter Method (20.3.1.a) - Measurement of Evapotranspiration

Practice: Lysimeter Method

Lesson 20.3.1.aMeasurement of Evapotranspiration

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9 questions

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6 sample questions

Question 1.
What is a lysimeter?
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Think about its purpose in water measurement.
Question 2.
Name one advantage of using lysimeters.
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Consider what accuracy means in water management.
3Question 3.
What is the primary function of a lysimeter?
- To measure rainfall
- To measure evapotranspiration
- To measure soil fertility
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Think about its purpose.
4Question 4.
True or False: Lysimeters are suitable for large-scale agricultural applications.
- True
- False
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Consider their practicality.
Question 5.
A farmer uses two lysimeters to measure evapotranspiration of two different crops over a month. The first lysimeter recorded a weight loss of 900 kg with 300 kg of rainfall and 100 kg of drainage. The second lysimeter recorded a weight loss of 700 kg with 200 kg rainfall and 80 kg drainage. Calculate the ET for both crops. Which crop experiences more evapotranspiration?
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Use the weight balance formula!
Question 6.
Discuss the implications of using lysimeters for calculating regional evapotranspiration under different climatic conditions. How might results vary?
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Consider how different climates impact crop water demands.

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