A soil with an ESP greater than 15 is usually classified as___________________?
Correct answer: B. Sodic soil
- A. Saline soil
- B. Sodic soil
- C. Acidic soil
- D. None of the above
Explanation
A soil with an exchangeable sodium percentage above 15 is classified as sodic because excessive exchangeable sodium damages soil structure and reduces infiltration. Saline soils are defined mainly by soluble-salt concentration, not ESP.
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