Agricultural ScienceSoil fertility, manures and fertilisersWAEC
Phosphorus deficiency in crops shows mainly as
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Answer: A. poor root growth and purplish leaves
Phosphorus is vital for roots; deficiency gives stunting and purple tints. Yellowing of old leaves points to nitrogen; scorched margins to potassium.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.