CCA Practice Questions - Certified Crop Adviser (International) Exam

Which soil test extraction method is most appropriate for acidic soils (pH < 7.0) to measure available phosphorus?

Olsen (sodium bicarbonate) (incorrect for this management context) Bray P1 (dilute HCl + NH4F) Morgan (incorrect for this management context) Mehlich-3 only at pH > 7.5 (incorrect for this management context)

Correct Answer:

Bray P1 (dilute HCl + NH4F)

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