Watershed‐scale phosphorus balances to establish reasonable water quality expectations

Abstract

Nutrient balances to optimize phosphorus use efficiency without jeopardizing system productivity can be applied at multiple spatial scales to track nutrient flows on the farm or across a watershed. When combined with soil testing or water quality data, nutrient balances can be a valuable tool for determining which 4R phosphorus management practices will be effective for meeting production or nutrient loss reduction goals. Earn 1 CEU in Nutrient Management by reading this article and taking the quiz at www.certifiedcropadviser.org/education/classroom/classes/580.