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Nursery, Greenhouse and Christmas Trees
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    • Program Themes
      • Breeding
      • Christmas Trees
      • Integrated Pest Management
      • Pathology
      • Production
        • Northwest Plant Evaluations
        • Nackley Lab Members
        • Optimized Irrigation
        • Precision Spray Application
        • Starting a Nursery
          • Nursery Industry
            • Industry Profile
              • Nursery Statistics
            • Production Systems
              • Container Systems
              • Field Systems
              • Greenhouse
            • Additional Resources
          • Business Planning
            • Types of Businesses
            • Additional Resources
          • Marketing
            • Targeted Marketing
            • Additional Resources
          • Nursery Resources
            • Labor
            • Land
            • Water
            • Additional Resources
          • Laws and Regulations
            • Additional Resources
      • Weed Science
      • Plant Health
    • Engagement Opportunities
      • Training Modules
        • Phytophthora
          • Module 1: Biology, Symptoms, and Diagnosis
            • What is Phytophthora?
            • Life Cycle
            • Disease Cycle
            • Seasonal Activity
            • Species Profiles
              • Cool Season Species
                • Phytophthora syringae
                • Phytophthora ilicis
                • Phytophthora ramorum
              • Warm Season Species
                • Phytophthora citricola
                • Phytophthora cactorum
                • Phytophthora cinnamomi
            • Virtual Dying Plant
            • Diagnosis
              • Systematic Approach
              • Confirming the Diagnoses
                • Confirming the Phytophthora Diagnosis - More Details
            • Practice Questions
          • Module 2: Disease Management
            • Cultural Control
            • Disease Triangle
            • Water Management
              • Develop a Plan
              • Water Movement
              • Water Sources
              • Water Treatment
              • Irrigation
              • Water Application Uniformity
              • Scheduling
              • Container Media
              • Drainage
            • Chemical Control
            • Scouting for Disease
            • Practice Questions
          • Module 3: Phytophthora ramorum
            • Introduction
            • Disease Cycle
            • Best Management Practices (BMPs)
            • Regulations
            • Links
            • Practice Questions
          • Further Information
          • Take the Exam
          • Glossary
      • Employment
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    • Make a Gift
  • Program Themes
    • Breeding
    • Christmas Trees
    • Integrated Pest Management
    • Pathology
    • Production
      • Northwest Plant Evaluations
      • Nackley Lab Members
      • Optimized Irrigation
      • Precision Spray Application
      • Starting a Nursery
        • Nursery Industry
          • Industry Profile
            • Nursery Statistics
          • Production Systems
            • Container Systems
            • Field Systems
            • Greenhouse
          • Additional Resources
        • Business Planning
          • Types of Businesses
          • Additional Resources
        • Marketing
          • Targeted Marketing
          • Additional Resources
        • Nursery Resources
          • Labor
          • Land
          • Water
          • Additional Resources
        • Laws and Regulations
          • Additional Resources
    • Weed Science
    • Plant Health
  • Engagement Opportunities
    • Training Modules
      • Phytophthora
        • Module 1: Biology, Symptoms, and Diagnosis
          • What is Phytophthora?
          • Life Cycle
          • Disease Cycle
          • Seasonal Activity
          • Species Profiles
            • Cool Season Species
              • Phytophthora syringae
              • Phytophthora ilicis
              • Phytophthora ramorum
            • Warm Season Species
              • Phytophthora citricola
              • Phytophthora cactorum
              • Phytophthora cinnamomi
          • Virtual Dying Plant
          • Diagnosis
            • Systematic Approach
            • Confirming the Diagnoses
              • Confirming the Phytophthora Diagnosis - More Details
          • Practice Questions
        • Module 2: Disease Management
          • Cultural Control
          • Disease Triangle
          • Water Management
            • Develop a Plan
            • Water Movement
            • Water Sources
            • Water Treatment
            • Irrigation
            • Water Application Uniformity
            • Scheduling
            • Container Media
            • Drainage
          • Chemical Control
          • Scouting for Disease
          • Practice Questions
        • Module 3: Phytophthora ramorum
          • Introduction
          • Disease Cycle
          • Best Management Practices (BMPs)
          • Regulations
          • Links
          • Practice Questions
        • Further Information
        • Take the Exam
        • Glossary
    • Employment
    • Handbooks
  • Faculty & Staff
  • For Students
    • Courses

Diagnosis

  • Systematic Approach
  • Confirming the Diagnoses

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College of Agricultural Sciences
Oregon State University
Corvallis, Oregon 97331

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