Original Guide

The Decision Key is revised from “Soybean Diagnostic Guide” published by the American Soybean Association.
Steering Committee
Tim Brackman
Keith Smith
Kelly Schwalbe

Technical authors
Larry Ashlock
James E. Beuerlein
Jay W. Chapin
C. Richard Edwards
John W. Everest
Zane R. Helsel
Edward Oplinger
Michael D.K. Owen
James H. Palmer
Donald Schmitt
James B. Sinclair
Fred Westbrook
John Woodruff