Testing the Quality of Polymer Coated Urea
Author(s) Mackenzy Naber, Matthew Ruark, Carl Rosen.
Polymer-coated urea (PCU) is a slow-release nitrogen (N) fertilizer product in which each urea prill is individually coated with polymer (plastic). PCU benefits are realized when environmental conditions cause substantial N loss, however, damage to the polymer coating can change the release pattern of N during the growing season, decreasing the effectiveness of PCU. This publication outlines a simple water test to evaluate PCU quality and provides suggestions to mitigate PCU damage (6 pages; 2017).