Changing the application method from Non-Incorporated on Bare Soil to Injected will cause the P Index to be reduced by 10.5 points. Determines maximum phosphorus application rates in vicinity of watercourses. The following table recommends redeeming actions according to the P Index value. If farming practices are maintained at the current level there is a small chance that P losses from this site will have an adverse impact on surface waters. The chance for an adverse impact to surface water exists.
Remedial action is required to reduce the risk of P movement.
All necessary soil and water conservation practices plus a P management plan must be put in place to avoid the potential for water quality degradation. 98-027 Nutrient Management Workbook, page 12 for more details. The phosphorus index is used as a means to address the risk of surface water environmental concerns resulting from phosphorus. In many cases, Best Management Practices can be used to lower the index number.