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Gail E. Ruhl

Botany and Plant Pathology 

  • Senior Plant Disease Diagnostician

Awards & Honors

(2005) Soybean Rust Team Award. PUCESA.

(2004) Educational Materials Awards Program: Certificate of Excellence. American Society of Agronomy.

(2003) Ralstonia Solanacearum Team Special Award. PUCESA.

(2010) Managing Moldy Corn Extension Team. 2010 PUCESA Team Award.

(2012) APS Excellence in Extension Award. American Phytopathological Society (APS).

(2012) 2012 PUCESA Team Award: Imprelis Herbicide Injury Response Team. Purdue University Cooperative Extension Specialists Associaton (PUCESA).

(2013) Midwest Regional Turf Foundation Award of Achievement. Midwest Regional Turf Foundation.

(2013) ASA Extension Excellence award for a digital decision aid. American Society of Agronomy (ASA).

(2013) 2013 Purdue Agriculture TEAM Award. Purdue College of Agriculture.

(2015) 35 Years of Service. Purdue University.

Selected Publications

Patton, A. J., Ruhl, G. E., Creswell, T. C., Wan, P., Becovitz, J., & Weisenberger, D. V. (2013). Potential damage to sensitive landscape plants from wood chips of aminocyclopyrachlor damaged trees.. Weed technology, 27, 803-809. Retrieved from

Egel, D., Foster, R., Maynard, E., Ruhl, G. E., Creswell, T., Faghihi, J., . . . White, E. (2013). Midwest Vegetable Production Guide for Commercial Growers. Retrieved from

Ruhl, G. E., & Creswell, T. C. (2013). Effective Use of a Diagnostic Lab. Greenhouse Product News (GPN) Magazine, pp24-29. Retrieved from

Ruhl, G. E., Twieg, E., DeVries-Paterson, R. M., Levy, L., Byrne, J., Mollov, D., & Taylor, N. J. (2011). First Report of Bacterial Wilt in Mandevilla splendens 'Red Riding Hood’ (Dipladenia) in the United States Caused by Ralstonia solanacearum biovar 3. Plant Disease, 95(5), 614. Retrieved from

Gerber, C., Ruhl, G. E., & Et al... (2013). Corn and Soybean Field Guide.

Chaky, J. L., Dolezal, W. E., Ruhl, G. E., & Jesse, L. (in press). A trend study of the confirmed incidence of Stewart’s wilt of corn, Pantoea stewartii subsp. stewartii, in the USA (2001-2012. APSnet journals for 2013 North Central Division Meeting Abstracts, 1. Retrieved from

Leonberger, A. J., Speers, C., Ruhl, G. E., Creswell, T. C., & Beckerman, J. L. (2013). A Survey of Phytophthora Species in Midwest Nurseries, Greenhouses and Landscapes. Plant Disease. Retrieved from

Kim, B. S., Ruhl, G. E., Creswell, T., & Loesch-Fries, L. S. (in press). Molecular Identification of a Tobacco mosaic virus Isolate from Imported Petunias. Plant Health Progress, (Vol15,No.4), 153-154. Retrieved from

Mollov, D., Lockhart, B., Phibbs, A., Creswell, T., Ruhl, G. E., Dorman, E., . . . Jordan, R. (2014). Clematis chlorotic mottle virus, a novel virus that affects clematis. Phytopathology 104:S3.81, 81-81.

Schutzki, Cregg, Creswell, T., & Ruhl, G. E. (in press). Abiotic Plant Disorders. In Plant Pathology - Concepts and Laboratory Exercises (3rd edition) co-editors B. Trigiano and B. Ownley.