37.5 - Duty, Delta, and Base Period
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Practice Questions
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What does Duty represent in irrigation?
💡 Hint: Think about how land can be watered with a given water flow.
What is the formula for calculating Delta?
💡 Hint: Recall the elements that factor into Delta's calculation.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does Duty represent in irrigation?
💡 Hint: Think about how we measure the area that can be watered.
True or False: The Base Period refers to the time span during which crops are typically harvested.
💡 Hint: Think about the different stages of crop management.
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Challenge Problems
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A river supplies 8 cumecs of water. If the Duty is 10 hectares/cumec, how many hectares can be irrigated? Next, if a crop's Base Period is 50 days, calculate the Delta.
💡 Hint: First calculate the irrigable area, then compute the Delta.
A field requires 60 mm of water (Delta) for a Base Period of 20 days. What is the Duty for the crop? Use the formula Δ = (8.64 × B) / D to find D.
💡 Hint: Focus on the rearranging part of gathering the right values.
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