Skip to Main Content Area
login
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
Search entire site
Resources
Glossary
Reference Tables
Home
Resources
Columbine
sp. with "
phyllody" or "virescence" - what is that? Check the glossary!
Jay W. Pscheidt, 2007.
Glossary
Reference Tables
Print-friendly version
