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How to Calculate NPK Nutrient Ratio
How to Calculate NPK Nutrient Ratio. The acronym NPK stands for "nitrogen, phosphorous and potassium." These three substances are primary ingredients used for the fertilization of lawns and crops, as plants need certain amounts of nitrogen, phosphorous and potassium in order to grow properly. By calculating the NPK nutrient ratio, you can tailor...
The acronym NPK stands for "nitrogen, phosphorous and potassium." These three substances are primary ingredients used for the fertilization of lawns and crops, as plants need certain amounts of nitrogen, phosphorous and potassium in order to grow properly. By calculating the NPK nutrient ratio, you can tailor your fertilizer toward the specific needs of the plants you are growing.
Things You'll Need
Calculator
Read the individual amounts of nitrogen, phosphorous and potassium listed on the package of fertilizer you are using.
Write the number of pounds of each element, and state the numbers as a ratio by inserting colons. For instance, if the fertilizer contains 10 pounds of nitrogen, five pounds of phosphorous and 10 pounds of potassium, write 10:5:10.
Reduce the numbers, if possible. For instance, 10:5:10 can be reduced to 2:1:2.
