Factsheets and Diagnostic Posters

Diagnostic Posters In 2009, OSU plant pathologists Drs. Sally Miller and Anne Dorrance and Nancy Taylor (C. Wayne Ellet Plant and Pest Diagnostic Clinic (PPDC)) pioneered the Ohio Plant Diagnostic Network (OPDN). The OPDN is a member of the National Plant Diagnostic Network (NPDN) and unites diagnostics, research, and outreach activities from all over Ohio, including OSU and Ohio Department of Agricultural (ODA) programs into one organized and effective communication tool. With funding from Grower Supported Organizations, OSU-Extension and OARDC high end phase-microscopes with video-linking capabilities were installed in three of the 10 outlying branches (NCARS, Muck Crops and Western) and the Wooster and Columbus sites of the Department of Plant Pathology. These microscopes have allowed for live, real-time communication between producers, researchers and diagnostic staff.

To assist outlying research station managers and producers with identification of structures observed using the microscopes diagnostic posters showing symtpoms and macro- and micro- signs were developed by Dr. Sally Miller, Melanie Lewis Ivey and Dr. Fulya Baysal-Gurel. We encourage producers, Extension personnel and educators to download the posters for educational purposes.

Bacterial Streaming [pdf]
Botrytis Grey Mold [pdf]
Downy Mildew of Cucurbits [pdf]
Lettuce Drop [pdf]
Phytophthora Blight [pdf]
Powdery Mildew of Cucurbits [pdf]
Radish Rhizoctonia Root and Hypocotyl Rot [pdf]
Tomato Late Blight [pdf]
Septoria Leaf Spot [pdf]

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Factsheets All or part of the Fact Sheets contained on this website and Ohioline may be copied without permission for educational, non-profit purposes. Credit for the publications on this website must be given to "Dr. Sally Miller- Ohio State University Extension."

..............................................Management Practices ................................................

New! Managing Downy Mildew in Organic and Conventional Vine Crops [pdf]
Hot Water Treatment of Vegetable Seeds to Eradicate Bacterial Plant Pathogens in Organic Production Systems [pdf]
Hot Water and Chlorine Treatment of Vegetable Seeds to Eradicate Bacterial Plant Pathogens [pdf]

.................................................Solanaceous Crops .....................................................

Anthracnose of pepper [pdf]
Anthracnose of tomato [pdf]
Bacterial spot of pepper [pdf]
Bacterial spot, speck and canker of tomatoes [pdf]
Bacterial ring rot of potato [pdf]
Black leg, aeril stem rot and tuber soft rot of potato[pdf]
Early blight of potato and tomato [pdf]
Fusarium dry rot and seed-piece decay of potato [pdf]
Fusarium and verticillium wilts of tomato, potato, pepper and eggplant [pdf]
Late blight of potato and tomato [pdf]
Phytopthora blight of peppers and cucurbits [pdf]
Rhizoctonia stem and stolon canker of potato [pdf]
Septoria leaf spot of tomatoes [pdf]
Scab of potato tubers [pdf]
New! Immunofluorescence Assay Detection of the Soybean Rust Pathogen [pdf]
Blossom End Rot of Tomato, Pepper and Eggplant [pdf]

............................................................Vine Crops ...........................................................

Gummy stem blight and black rot of cucurbits [pdf]
Powdery mildew of vine crops [pdf]
Fusarium wilt of vine crops [pdf]
Bacterial wilt of cucurbits [pdf]
Phytopthora blight of peppers and cucurbits [pdf]
Mosaic viruses of vine crops [pdf]

..............................................................Beans.................................................................

Damping-off and root rot of beans [pdf]

............................................................Crucifers..............................................................

Black rot of crucifer [pdf]
Downy mildew of crucifers [pdf]
Clubroot of crucifers [pdf]