In a fertilizer labeled 10-6-6, what does the middle 6 represent?

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Multiple Choice

In a fertilizer labeled 10-6-6, what does the middle 6 represent?

Explanation:
Fertilizer labels use three numbers in the order of nitrogen, phosphorus, and potassium. The middle number represents phosphorus content, typically given as phosphorus pentoxide (P2O5). So a 10-6-6 label means 6% P2O5. The first number is nitrogen, the third is potassium (often shown as K2O), and sulfur is not part of the standard three-number N-P-K labeling.

Fertilizer labels use three numbers in the order of nitrogen, phosphorus, and potassium. The middle number represents phosphorus content, typically given as phosphorus pentoxide (P2O5). So a 10-6-6 label means 6% P2O5. The first number is nitrogen, the third is potassium (often shown as K2O), and sulfur is not part of the standard three-number N-P-K labeling.

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