Manure Plant Available Nitrogen (PAN) Calculation, Ver. 0.6

Plant Available Nitrogen (PAN) method must be used by concentrated animal feeding operations (CAFOs) to determine the nitrogen fertilizer value of manure. Manure application rates for a field is calculated using the PAN estimate and a target fertilizer nitrogen rate for a field.

The calculations used by this calculator are detailed in MU Guide G9186 "Calculating Plant-Available Nitrogen and Residual Nitrogen Value in Manure."  Contact John Lory if you have questions or comments.

To calculate PAN you need to have an estimate of manure nutrient concentration, information on the type of animals, information on use of bedding and information on the method of manure application. Enter the requested information to determine PAN for a source of manure.

This calculator creates a pdf document with your results.  The new report appears as a popup window so you must allow popups from this site to get your report.

This site was updated June 24, 2009 to simplify its use and to correct an error handling samples reported on a Dry Matter basis.

Facility ID Entry

Operation Name:

Manure Storage ID:

Planner Name:

Planner email:

Manure Test Data Entry

Animal Type:         Manure Test Moisture Basis:

Manure Form:

Manure Test Units (liquid manure):

Total N or Total Kjeldahl N (TKN):

Nitrate N (typically assume = 0):

Percent (%) - required if test results on a dry matter basis

Source of Manure Test Data:

Enter requested information:

Manure Application Information

Manure application equipment:

Days to Incorporation:

Target crop fertilizer N rate: pounds per acre


Note: Your report will appear as a pdf file in a new window on your browser.  You must allow popups from this site to get your report.