A method for estimating dairy cow N, P, and K output, a spreadsheet developed at the University of Nebraska, is available at the following website: http://www.ianr.unl.edu/manure. This Excel® spreadsheet estimates the excretion of N, P, and K by dairy cows, the quantity of nutrients remaining after losses, and the land needs for using these nutrients at agronomic rates. To generate more accurate estimates of nutrient excretion t and develop a nutrient use plan, you will need to enter the following information into the spreadsheet:
This user-friendly spreadsheet is based on data reported by University of Florida researchers (Van Horn 1992).
Back to National Curriculum
PAMS Home Page
If you have trouble accessing this page because of a disability, please email firstname.lastname@example.org.