Alabama Cooperative Extension System - Publication
Searchable information on diseases of cotton, fruits, ornamentals, peanut, turf, vegetables, and wheat.
North Carolina State University
Notes on disease identification and control for alfalfa, corn, cotton, fruits, nuts, ornamentals, soybeans, tobacco, turfgrass and vegetables.
Ohio State University
Information and control for a range of common diseases.
Oklahoma State University
Description and control of a variety of plant diseases including those caused by insects.
Pennsylvania State University - Plant Pathology Fa
Provides diagnosis and control measures for common diseases of ornamental plants frequently grown in the northeastern U.S.
Purdue University
Covers diseases of field crops, fruits, ornamentals, turf and vegetables, and information on pesticide programs.
Texas University
Description and control of a large range of diseases of crops, turf, ground covers, shrubs, trees and flowers.
University of Arizona
Information and pictures of plant diseases (listed by crop or plant common name), disease publications, newsletter and related links.
University of California, Davis
Information that aids in disease diagnosis of a number of crop plants, proper sampling procedures for submission to diagnostic labs, and the principles of epidemiology and disease management.
University of Florida
Description and control practices of crop, citrus, fruit, ornamental, turf and vegetable diseases commonly occurring in the local region.
University of Idaho
Information on plant diseases affecting local crops including barely, beans, corn, sugar beets, potato and wheat.
University of Illinois
Description and control of some common tree diseases.
Virginia State University
Disease fact sheets listed by type of plant including field crops, vegetables, herbaceous ornamentals, and woody shrubs and trees.