Wisconsin Producer Perspective on the Phosphorus Index

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Why Evaluate the P-Index from the Farmer’s Perspective?

The phosphorus index is a risk management tool, designed to evaluate the potential for runoff from a field based on the conditions and management of that field. Based on many years of work with farms in Wisconsin, the author sees the P-Index as valuable tool for comparing fields and management on the same farm and influencing choices that will lead to the lowest risk of runoff. The tool should not be used to compare between farms, as differing management and geography can cloud those comparisons. Another aspect of the p-index that causes concern is its use as a regulatory tool. When the p-index is applied from a distance–without contact with the farm or farmer, a disconnect can develop.


Dennis Frame, University of Wisconsin drframe@wisc.edu

Additional Information

UW Discovery Farms http://uwdiscoveryfarms.org/

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