Iowa State University Extension

Publications
The ISU Extension Distribution Center offers downloadable pdfs and printed copies of hundred of topics.

Crop, Forages and  Small Grain Diseases offers information on the diseases of field crops most commonly grown in Iowa.

The Horticulture and Forestry Diseases publications offer information on plants commonly found in Iowa yards, commercial food crops and forest plants.

Web Pages
Learn the latest on soybean cyst nematodes.

The ISU Department of Plant Pathology Extension page offers information on crop and horticulture diseases.

Other Resources
ISU Plant Disease Clinic provides diagnostic support for county and area Extension personnel and the residents of Iowa.