Agricultural ScienceSoil fertility, manures and fertilisersJAMB
An NPK fertiliser labelled 20:10:10 contains
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Answer: A. 20% nitrogen, 10% P₂O₅ and 10% K₂O
The numbers give N, P₂O₅ and K₂O.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.