Soybean Field Guide

2nd Edition. — Iowa State University, 2011. — 68 pp. This publication is the result of a cooperative effort between the Iowa Soybean Association and the College of Agriculture and Life Sciences and Extension at Iowa State University. Table of Contents Soybean production Growth stages Production recommendations Integrated pest management Scouting Gathering information Diagnostic clinic Management options Fungicide decisions Herbicide decisions Insecticide decisions Defoliation estimates Diseases Foliar diseases Stem and root diseases Nematodes Seedborne diseases Insects Root and seed feeders Stem feeders Leaf feeders Leaf and pod feeders Beneficial insects Disorders Environmental stresses Nutrient problems Herbicide injury symptoms