The availability of essential nutrients from soil to the plants is controlled by the ________ properties of soil:
Correct answer: C. chemical
- A. Physical
- B. Biological
- C. chemical
- D. both A & B
Explanation
Chemical soil properties such as pH, cation-exchange capacity and nutrient reactions largely determine whether essential elements remain available for plant uptake. Physical and biological properties also influence availability, but chemical control is the intended answer.
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