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Home > Irrigated Lands > Grower Resources > Correctly Reporting Applied N for your Nitrogen Management Plan

Correctly Reporting Applied N for your Nitrogen Management Plan

Correctly Reporting Applied Nitrogen

It has come to our attention that many growers my be reporting the total amount of fertilizer applied instead of reporting the amount of Nitrogen in the fertilizer. When completing your annual Nitrogen Management Plans and entering them in Subwatershed.com, it is very important to report only the percentage of Nitrogen in the fertilizer applied.

The following may help you determine the amount of Nitrogen in your fertilizer. Be sure to contact your fertilizer manufacturer for exact conversions as different manufacturers may have different variations.

Converting Total Applied Fertilizer Amounts to
Pounds of Nitrogen Applied for Common Products
(see your fertilizer manufacturer for exact conversions)

Nitrogen fertilizers have three numbers on the label such as 10-20-10 or 10-10-10 and these numbers represent the percentage of the three major nutrients, nitrogen-phosphorus-potassium (N-P-K). Below is a table of examples of how to determine the amount of pounds of nitrogen in different fertilizer products.


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