Potassic fertiliser is graded based on its ______________ content?
Correct answer: B. K2O
- A. KCl
- B. K2O
- C. KNO3
- D. K2SO4
Explanation
Potassic fertilisers are conventionally graded by their equivalent K2O content, even though the potassium may actually be present as KCl, K2SO4, or another salt.
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