In calcium ammonium nitrate (CAN) fertiliser ____________________?
Correct answer: A. Nitrate nitrogen is quick acting
- A. Nitrate nitrogen is quick acting
- B. Ammoniacal nitrogen is quick acting
- C. Nitrate nitrogen is slower acting
- D. None of these
Explanation
Nitrate nitrogen is immediately available to plants, whereas ammoniacal nitrogen generally acts more slowly because it may first undergo conversion in the soil. Thus CAN combines a quick-acting nitrate fraction with a slower ammoniacal fraction.
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