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  • Hosts and Their Diseases

    • Host and Disease Descriptions

    • Cultivar Susceptibility Tables

  • Diagnosis and Testing

    • Disease Diagnosis and Control

    • Testing Services

  • Pathogen Articles

    • Pathogens Common to Many Plants

      • Oregon’s Most Unwanted: Invasive Species
      • Nematodes
      • Oomycetes
      • Fungi
      • Bacteria and Other Prokaryotes
      • Viruses and Viruslike Pathogens
      • Parasitic Plants of Oregon
      • Tree Decline
    • Nonpathogenic Phenomena

      • Mycorrhiza
      • Thatch in Home Lawns
      • Algae, Lichens, and Mosses on Plants
      • Care and Maintenance of Wood Shingle and Shake Roofs
      • Winter Injury of Landscape Plants in the Pacific Northwest
      • Plant Nutrition Diagnosis
      • Key to Nutrient Deficiencies in Vegetable Crops
      • Key to Nutrient Deficiencies of Deciduous Fruit and Nuts
      • Fluorine Toxicity in Plants
  • Pesticide Articles

    • Fungicide Theory of Use and Mode of Action

    • Fungicide Resistance and Fungicide Groups

    • Fungicide Families or Groups

    • Fungicides, Bactericides, and Nematicides

    • Fungicide and Pollen Interactions

    • Biofungicides and Plant Activators Registered in Oregon

    • Materials Allowed for Organic Disease Management

    • Fungicidal Activity and Nutritional Value of Phosphorous Acid

    • Horticultural Spray Oils

    • Seed Treatments

    • Fungicides for Disease Control in the Home Landscape

    • Spray-tank Adjuvants

    • Improving Spray Efficiency

    • Preparing Tank-mix Bordeaux Mixture

    • Limes in Sprays for Disease Control

    • Tree Wound Paints

    • Treating Irrigation Water to Eliminate Water Molds

    • Fumigation

  • Safety Information

    • Using Pesticides Safely

    • How to Reduce Bee Poisoning from Pesticides

    • Safety Checklist

  • Resources

    • Glossary

    • Reference Tables

  • Order Handbook

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Pesticide Articles

  • Fungicide Theory of Use and Mode of Action
  • Fungicide Resistance and Fungicide Groups
  • Fungicide Families or Groups
  • Fungicides, Bactericides, and Nematicides
  • Fungicide and Pollen Interactions
  • Biofungicides and Plant Activators Registered in Oregon
  • Materials Allowed for Organic Disease Management
  • Fungicidal Activity and Nutritional Value of Phosphorous Acid
  • Horticultural Spray Oils
  • Seed Treatments
  • Fungicides for Disease Control in the Home Landscape
  • Spray-tank Adjuvants
  • Improving Spray Efficiency
  • Preparing Tank-mix Bordeaux Mixture
  • Limes in Sprays for Disease Control
  • Tree Wound Paints
  • Treating Irrigation Water to Eliminate Water Molds
  • Fumigation
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Pesticide Articles

PNW Plant Disease Image

Pesticide storage facility.

Jay W. Pscheidt, 2011.
Fungicide Theory of Use and Mode of Action
Fungicide Resistance and Fungicide Groups
Fungicide Families or Groups
Fungicides, Bactericides, and Nematicides
Fungicide and Pollen Interactions
Biofungicides and Plant Activators Registered in Oregon
Materials Allowed for Organic Disease Management
Fungicidal Activity and Nutritional Value of Phosphorous Acid
Horticultural Spray Oils
Seed Treatments
Fungicides for Disease Control in the Home Landscape
Spray-tank Adjuvants
Improving Spray Efficiency
Preparing Tank-mix Bordeaux Mixture
Limes in Sprays for Disease Control
Tree Wound Paints
Treating Irrigation Water to Eliminate Water Molds
Fumigation
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