دانلود کتاب Soybean Field Guide

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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