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Gail E. Ruhl

Botany and Plant Pathology 

  • Senior Plant Disease Diagnostician

Awards & Honors

(2015) 35 Years of Service. Purdue University.

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

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

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

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

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

(2010) 30 Years Service to Purdue. Provost Recognition Luncheon.

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

(2009) Outstanding Service in Global Relations. Epsilon Sigma Phi ; Alpha Lambda Chapter;ESP Globalization Committee.

(2005) Soybean Rust Team Award. PUCESA.

Selected Publications

Rivera, Y., Creswell, T. C., Ruhl, G., & Crouch, J. A. (n.d.). First report of Downy Mildew caused by Plasmopara halstedii on the native Rudbeckia fulgida Aiton var. speciosa (Wender.) in Indiana. Plant Disease. Retrieved from

Gerber, C., & Et al (2010). Corn and Soybean Field Guide. , (ID-179), 314.

Egel, D., Hoke, S., Dicklow, M., & Wick, R. (2010). First Report of Black Leg of Hydroponic Basil in the United States Caused by Plectosporium tabacinum. Plant Disease, 94(4), 484.2 - 484.2. Retrieved from

Egel, D., & Creswell, T. (2010). Late Blight of Tomato and Potato. , (BP-80-W), 2. Retrieved from

Keesey, M., & Et al (2010). Taking Care of Your Yard: The Homeowner's Essential Guide to Lawns, Trees, Shrubs, and Garden Flowers. , (HO-236), 37pp.

Schutzki, Cregg, Creswell, T., & Ruhl, G. (2014). Abiotic Plant Disorders. In Plant Pathology - Concepts and Laboratory Exercises (3rd edition) co-editors B. Trigiano and B. Ownley.

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

Kim, B., Ruhl, G., Creswell, T., & Loesch-Fries, L. (2014). Molecular Identification of a Tobacco mosaic virus Isolate from Imported Petunias. Plant Health Progress, (Vol15,No.4), 153-154. Retrieved from

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

Chaky, J., Dolezal, W., Ruhl, G., & Jesse, L. (2013). A trend study of the confirmed incidence of Stewartäó»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