Professional Societies and Government Sites

American Phytopathological Society (APSnet)

Cooperative Extension Service-Plant Pathology Unit

Agriculture Network Information Center (AgNIC)

British Society for Plant Pathology

South African Society for Plant Pathology

Canadian Phytopathological Society

General Sites

Plants Pathogens and People

Plant Pathology at other Universities

Plant Disease Images

Texas Plant Disease Handbook

Plant Pathology Internet Guidebook

Symptoms of virus diseases in plants,"Thorben Lundsgaard, Dept. of Plant Biology, KVL, Denmark"