• Science: Agriculture: Pests and Diseases  (241)

• Alabama Cooperative Extension System - Publications - 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 Fact Sheets - Provides diagnosis and control measures for common diseases of ornamental plants frequently grown in the northeastern U.S.
• 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.

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