NPK stands for "nitrogen, phosphorus, and potassium," the three nutrients that compose complete fertilizers. ... Also implied is a percentage symbol after each number because each of the three numbers represents the percentage of that nutrient in the makeup of the fertilizer.
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nitrogen, phosphorus, and potassium
Explanation:
NPK stands for "nitrogen, phosphorus, and potassium," the three nutrients that compose complete fertilizers. ... Also implied is a percentage symbol after each number because each of the three numbers represents the percentage of that nutrient in the makeup of the fertilizer.