37.7 - Effective Rainfall (ER)
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Practice Questions
Test your understanding with targeted questions
Define Effective Rainfall.
💡 Hint: Think about how rainfall impacts crop growth.
What does the USDA method utilize for estimating ER?
💡 Hint: Consider what kind of data is typically collected over time.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does Effective Rainfall refer to?
💡 Hint: Which option highlights the beneficial part of rain?
True or False: All rainfall is effective for crops.
💡 Hint: Consider the losses that occur when it rains.
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Challenge Problems
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A farmer observed 150 mm of rainfall but recorded 40 mm of runoff and 20 mm lost to evaporation before reaching the soil. Calculate the effective rainfall.
💡 Hint: Subtract all losses from total rainfall.
Discuss the advantages and possible limitations of the USDA method versus the Soil Moisture Balance Method in estimating effective rainfall.
💡 Hint: Think about the trade-offs in ease of use versus detail.
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