1. Working Toward a National Soil Test P and K Database and Recommendation System

Soil test recommendations differ across state lines and across regions—sometimes these differences are large.  They may be due to differences in soil and climate, but they may be due to historical accident.  This presentation will explain a new project to gather all available soil test P and K calibration data nationally, to create a transparent framework to house this data and make it available, to conduct new calibration research to fill in gaps, and to create recommendations... D. Osmond