AgSource Laboratories (IA) Soil Test Packages: Basic:Soil pH, Buffer pH, OM, P, K, Na, Mg, Ca, Calculated CEC and Percent of Base Saturation Basic Plus:Basic, S, and Zn Routine:Basic, S, Zn, SS Diagnostic:Routine, Mn, Cu, Fe, and B By Soil Test Joe|2018-08-30T10:22:31-05:00August 30th, 2018|AgSource Laboratories (IA)|Comments Off on AgSource Laboratories (IA) Share This Story, Choose Your Platform! FacebookTwitterLinkedInRedditTumblrPinterestVkEmail About the Author: Soil Test Joe