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Fertilizer Label Information

Understanding fertilizer labels is crucial for making informed purchasing decisions. Key components of a fertilizer label include net weight, guaranteed analysis, and manufacturer details. Additional information may include the percentage of water-insoluble nitrogen (WIN), potential acidity, salt index, and sources of nutrients. To calculate the best buy, use the formula: Bag weight x %N = Amount of N per bag. This helps you determine the cost per pound of nitrogen, allowing for effective comparisons and smarter gardening investments.

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Fertilizer Label Information

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  1. Fertilizer Label Information • Most fertilizer labels contain the following information: • Net weight. • Guaranteed analysis. • Name and address of manufacturer.

  2. Additional Label Information • Additional information which may be found on fertilizer labels is: • Percentage of water insoluble nitrogen (WIN). • Potential acidity. • Salt index. • Source or carrier. • Percentage of minor elements.

  3. Calculating the Best Buy • Formula used to compare different fertilizers: Bag weight x %N = Amount of N per bag Cost per bag = Cost per lb. of N Amount of N

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