If a fertilizer is labeled 20-10-5, what is the approximate nitrogen content?

Prepare for the NOCTI 6157 Pennsylvania Applied Horticulture Test. Utilize flashcards and multiple-choice questions to enhance your learning experience. Discover hints and explanations for each question. Gear up for your success!

Multiple Choice

If a fertilizer is labeled 20-10-5, what is the approximate nitrogen content?

Explanation:
On a fertilizer label, the three numbers show the percentage by weight of nitrogen, phosphate (as P2O5), and potash (as K2O). The first number is nitrogen, so this product contains about 20% nitrogen by weight. That means, for every 100 pounds of this fertilizer, roughly 20 pounds would be nitrogen. The remaining numbers indicate 10% phosphate and 5% potash, but the nitrogen content you’re asking about is the 20%.

On a fertilizer label, the three numbers show the percentage by weight of nitrogen, phosphate (as P2O5), and potash (as K2O). The first number is nitrogen, so this product contains about 20% nitrogen by weight. That means, for every 100 pounds of this fertilizer, roughly 20 pounds would be nitrogen. The remaining numbers indicate 10% phosphate and 5% potash, but the nitrogen content you’re asking about is the 20%.

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