The amount of water that can be absorbed by an oven dry soil at 105•c when it is exposed to an atmosphere of 100% relative humidity is called:
Correct answer: B. Hygroscopic coefficient
- A. Field Capacity (FC)
- B. Hygroscopic coefficient
- C. Maximum water holding capacity
- D. Permanent wilting point
Explanation
The hygroscopic coefficient is the water held by an oven-dry soil when exposed to air at 100% relative humidity. Field capacity and permanent wilting point describe much higher and biologically different soil-water conditions.
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