The storage capacity of a soil equals:
Correct answer: D. Field capacity less hygroscopic water
- A. Field capacity
- B. Field capacity less capillary water
- C. Field capacity plus gravitational water
- D. Field capacity less hygroscopic water
Explanation
The soil-water storage available to plants is estimated as field capacity minus hygroscopic water. Hygroscopic water is held too tightly by soil particles for normal plant absorption.
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