Converting Between Mehlich 1 and 3 Soil Test Values for West Tennessee Soils

Abstract

The purpose of this fact sheet is to report on the relationship between Mehlich 1 and 3 soil tests (phosphorus) P and (potassium) K for West Tennessee soils. To evaluate the relationship between the extractants, we collected and analyzed over 600 soil samples (sampled to a depth of 6 inches) for soil pH, Mehlich 1, and Mehlich 3 extractable elements. The number of soils used for the P and K conversion equations were 625 and 608, respectively.