How do I determine which phosphorus level to select in the Additional Data Soil Test section? How do I account for multiple soil samples?

The soil phosphorus concentration measured in a soil test can be interpreted as a qualitative level (Low, Medium, High/ Optimum, Very High/Excessive, etc). The interpretation comes from a state’s nutrient management recommendations which are based on factors like region, crop, and soil type. The level is often included on soil test reports.

If you have more than one soil sample collected for your field, please use the dominant soil phosphorus test level for the field in the drop-down selection. For example, if a grower has 100 acres and 60 acres of the field tested low for phosphorus, please select low for the drop-down.

The section pictured below impacts the Water Quality Indicator. You can read more about the indicator on our Metrics Documentation Website.