v2.1 (2026-06-10) · Buchholz, D.D. (originally 1983, revised 5/2004). Soil Test Interpretations and Recommendations Handbook. University of Missouri College of Agriculture, Division of Plant Sciences. Contributing authors: J.R. Brown, D.K. Crocker, J.D. Garrett, R.G. Hanson, J.A. Lory, M.V. Nathan, P.C. Scharf, H.N. Wheaton. Lime: MU Extension G9077 (Feb 2026), G9102, G9107.
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