44.8.2 - Leaching Requirement Formula
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Practice Questions
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What does LR stand for in irrigation?
💡 Hint: Think about what is needed to manage salts.
What do you measure to find out the salinity of soil?
💡 Hint: It measures how well the soil can conduct electric current.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of calculating Leaching Requirement (LR)?
💡 Hint: What issue does leaching address?
True or False: Higher Electrical Conductivity (EC) indicates lower salinity in soil.
💡 Hint: Reflect on what electrical conductivity measures.
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Challenge Problems
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A farmer tests their irrigation water and finds an EC_{iw} of 2.8 dS/m and the saturation extract has an EC_{e} of 1.1 dS/m. Determine the leaching requirement and discuss the implications for irrigation practices.
💡 Hint: Be sure to calculate carefully and reflect on how this impacts irrigation.
If a field is neglected for several seasons regarding leaching, and a farmer notices a significant increase in soil salinity, what steps can they take to rectify the situation using LR?
💡 Hint: Think about the relationship between leaching requirement and salinity management.
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