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Leadership Meet the Administrative Team Departments and Units Aute et fugiat ad est cupidatat esse laborum dolor ex anim anim cillum cillum exercitation culpa. Our Experts Aute et fugiat ad est cupidatat esse laborum dolor ex anim anim cillum cillum exercitation culpa.State Administration Get contact information for Extension administrative personnel by operational area and their respective support personnel. Area Extension Directors Get contact information for the Area Extension Directors (AEDs) County Extension Personnel Aute et fugiat ad est cupidatat esse laborum dolor ex anim anim cillum cillum exercitation culpa.
Nicole Gauthier
Extension Faculty
Associated Departments
Scholars@UK
Separation and quantification of mycotoxins in floral tissue of hemp (Cannabis sativa) infected with Fusarium graminearum
Kagan, I. A., Smith, H. S., Schendel, R. R. & Gauthier, N., Apr 2025, In: JSFA reports. 5, 4, p. 140-148 9 p.Research output: Contribution to journal › Article › peer-review
Susceptibility of Zucchini Cultivars to Powdery Mildew (Podosphaera xanthii) Under High- and Low-Nitrogen Regimes
Rudolph, R., Dixon, E., Munir, M., Leonberger, K., Pettigrew, K., Polo, M., Smith, H. S. & Gauthier, N. A., 2024, In: Plant Health Progress. 25, 4, p. 380-385 6 p.Research output: Contribution to journal › Article › peer-review
Incidence and Distribution of the Fusarium sambucinum Species Complex Associated with Cannabis sativa in Kentucky
Smith, H., Dixon, E., Munir, M. & Gauthier, N., 2024, In: Plant Health Progress. 25, 3, p. 316-323 8 p.Research output: Contribution to journal › Article › peer-review
Leaf Spot Disease Development and Its Effect on Yield of Essential Oil-Producing Hemp Cultivars in Kentucky
Munir, M., Smith, H., Valentine, T., Leonberger, K., Szarka, D., Dixon, E., Anthony, N., Ricciardi, M., Adedokun, T., Keene, T., Pearce, R. & Gauthier, N., Jun 2024, In: Plant Disease. 108, 6, p. 1621-1631 11 p.Research output: Contribution to journal › Article › peer-review
Influence of Fungicide Application on Rhizosphere Microbiota Structure and Microbial Secreted Enzymes in Diverse Cannabinoid-Rich Hemp Cultivars
Xu, J., Knight, T., Boone, D., Saleem, M., Finley, S. J., Gauthier, N., Ayariga, J. A., Akinrinlola, R., Pulkoski, M., Britt, K., Tolosa, T., Rosado-Rivera, Y. I., Iddrisu, I., Thweatt, I., Li, T., Zebelo, S., Burrack, H., Thiessen, L., Hansen, Z. & Bernard, E. & 3 others, , Jun 2024, In: International Journal of Molecular Sciences. 25, 11, 5892.Research output: Contribution to journal › Article › peer-review
Occurrence and Distribution of Common Diseases and Pests of U.S. Cannabis: A Survey
Munir, M., Leonberger, K., Kesheimer, K., Bolt, M., Zuefle, M., Aronson, E., Ricciardi, M., Schluttenhofer, C., Joly, D., Smith, H. S., Coburn, J., Da Cunha Leme Filho, J. F., Rondon, S. I., Smart, C. D., Collins, A., Garfinkel, A. & Gauthier, N. A., 2023, In: Plant Health Progress. 24, 4, p. 498-507 10 p.Research output: Contribution to journal › Article › peer-review
Potential for Cultural Management of Lettuce Drop (Sclerotinia sclerotiorum) in High Tunnels Through Modification of Soil Moisture, Planting Date, and Cultivar
Rudolph, R. E., Dixon, E., Munir, M., Leonberger, K., Pettigrew, K., Polo, M., Smith, H. S., Bajek, V., Irwin, L. & Gauthier, N. A., 2024, In: Plant Health Progress. 25, 1, p. 72-77 6 p.Research output: Contribution to journal › Article › peer-review
Fusarium Species Recovered from Postharvest Hemp Materials from Kentucky Fields
Szarka, D., Smith, H. S., Dixon, E., Munir, M., Rahnama, M. & Gauthier, N. A., 2023, In: Plant Health Progress. 24, 4, p. 468-474 7 p.Research output: Contribution to journal › Article › peer-review
First Report of Hirsutella thompsonii as an Entomopathogenic Fungus of Hemp Russet Mite (Aculops cannabicola) in Kentucky
Ricciardi, M. M., Smith, H., Viloria, Z., Dixon, E., Szarka, D., Pearce, R., Gauthier, N. & Villanueva, R. T., 2024, In: Plant Health Progress. 25, 1, p. 92-94 3 p.Research output: Contribution to journal › Article › peer-review
Emerging Fusarium spp. Causing Head Blight on Hemp in Kentucky
Smith, H., Szarka, D., Dixon, E., Adedokun, O., Munir, M., Ricciardi, M., Schroer, R. & Gauthier, N., 2023, In: Plant Health Progress. 24, 2, p. 132-134 3 p.Research output: Contribution to journal › Article › peer-review
Seeing double on Cannabis: Haploids and heteroploids of Bipolaris gigantea on hemp and other dicots
Szarka, D., Gauthier, N. A., Rahnama, M. & Schardl, C. L., 2023, In: Mycologia. 115, 5, p. 614-629 16 p.Research output: Contribution to journal › Article › peer-review
Prescreening of Biological and Biorational Fungicides Against Common Hemp Pathogens Using In Vitro Analyses
Dixon, E., Leonberger, K., Szarka, D., Amsden, B., Smith, H., Krause, M. & Gauthier, N., 2022, In: Plant Health Progress. 23, 3, p. 250-255 6 p.Research output: Contribution to journal › Article › peer-review
Suppression of Hemp Powdery Mildew Using Root-Applied Silicon
Dixon, E., Leonberger, K., Amsden, B., Szarka, D., Munir, M., Payee, W., Datnoff, L., Tubana, B. & Gauthier, N., 2022, In: Plant Health Progress. 23, 3, p. 260-264 5 p.Research output: Contribution to journal › Article › peer-review
First Report of Black Root Rot (Berkeleyomyces rouxiae) on Greenhouse Hemp (Cannabis sativa) in Kentucky
Rahnama, M., Szarka, D., Boyadjieva, L. & Gauthier, N., Sep 2022, In: Plant Disease. 106, 9, p. 2534 1 p.Research output: Contribution to journal › Comment/debate
First report of Cercospora cf. flagellaris on industrial hemp (Cannabis sativa) in Kentucky
Doyle, V. P., Tonry, H. T., Amsden, B., Beale, J., Dixon, E., Li, H., Szarka, D. & Ward Gauthier, N., Jul 2019, In: Plant Disease. 103, 7, p. 1784 1 p.Research output: Contribution to journal › Article › peer-review
First report of impatiens downy mildew caused by Plasmopara obducens in Kentucky
Ward, N. A., Dixon, E. & Amsden, B., 2013, In: Plant Disease. 97, 3, p. 428 1 p.Research output: Contribution to journal › Comment/debate
First report of boxwood blight caused by Calonectria pseudonaviculata in Kentucky
Ward Gauthier, N. A., Amsden, B., Beale, J. & Dixon, E., May 2016, In: Plant Disease. 100, 5, p. 1019 1 p.Research output: Contribution to journal › Article › peer-review
Reemergence of Septoria leaf spot caused by Septoria cannabis on hemp in Kentucky
Rahnama, M., Szarka, D., Li, H., Dixon, E., Castlebury, L. & Ward Gauthier, N. A., Sep 2021, In: Plant Disease. 105, 9Research output: Contribution to journal › Article › peer-review
Development of a quantitative polymerase chain reaction detection protocol for Cercospora kikuchii in soybean leaves and its use for documenting latent infection as affected by fungicide applications
Chanda, A. K., Ward, N. A., Robertson, C. L., Chen, Z. Y. & Schneider, R. W., Oct 1 2014, In: Phytopathology. 104, 10, p. 1118-1124 7 p.Research output: Contribution to journal › Article › peer-review
Effects of simplicillium lanosoniveum on phakopsora pachyrhizi, the soybean rust pathogen, and its use as a biological control agent
Ward, N. A., Robertson, C. L., Chanda, A. K. & Schneider, R. W., Aug 2012, In: Phytopathology. 102, 8, p. 749-760 12 p.Research output: Contribution to journal › Article › peer-review
Filling Gaps in the Specialty Crops Ag Workforce: A Focus on Minority and Underserved Populations
Lamb, A. (PI), Arnoldussen, B. (CoI) & Gauthier, N. (CoI)
12/1/24 → 11/30/26
Project: Research project
Evaluation of the Efficacy, Agronomic Fit, and Environmental Fate of Biopesticides for Management of Economically Important Diseases and Arthropod Pests of Hemp
Villanueva, R. (PI) & Gauthier, N. (CoI)
4/1/24 → 3/31/26
Project: Research project
Evaluation of the Efficacy, Agronomic Fit, and Environmental Fate of Biopesticides for Management of Economically Important Diseases and Arthropod Pests of Hemp
Gauthier, N. (PI) & Villanueva, R. (CoI)
4/1/24 → 3/31/26
Project: Research project
Increasing DEIA Programming for Integrated Pest Management (IPM): A Model for USDA-NIFA-Funded Organizations
Gauthier, N. (PI)
9/1/24 → 2/14/25
Project: Research project
Kentucky Extension IPM Implementation Program: 2024-2027: Second Scope for Specialty Crops
Gauthier, N. (PI), Beale, J. (CoI), Bessin, R. (CoI), Legleiter, T. (CoI), Ritchey, E. (CoI) & Wise, K. (CoI)
9/1/24 → 8/31/27
Project: Research project
Kentucky Extension IPM Implementation Program: 2024-2027: Scope for Plant Disease Diagnostic Lab (PDDL)
Beale, J. (PI), Bessin, R. (CoI), Gauthier, N. (CoI), Legleiter, T. (CoI), Ritchey, E. (CoI) & Wise, K. (CoI)
9/1/24 → 8/31/27
Project: Research project
Kentucky Extension IPM Implementation Program: 2024-2027: Scope for Pesticide Safety Education Program (PSEP)
Bessin, R. (PI), Beale, J. (CoI), Gauthier, N. (CoI), Legleiter, T. (CoI), Ritchey, E. (CoI) & Wise, K. (CoI)
9/1/24 → 8/31/27
Project: Research project
Kentucky Extension IPM Implementation Program: 2024-2027: Scope for Specialty Crops
Gauthier, N. (PI), Beale, J. (CoI), Bessin, R. (CoI), Legleiter, T. (CoI), Ritchey, E. (CoI) & Wise, K. (CoI)
9/1/24 → 8/31/27
Project: Research project
Kentucky Extension IPM Implementation Program: 2024-2027: Scope for Kentucky Agricultural Training School (KATS)
Ritchey, E. (PI), Beale, J. (CoI), Bessin, R. (CoI), Gauthier, N. (CoI), Legleiter, T. (CoI) & Wise, K. (CoI)
9/1/24 → 8/31/27
Project: Research project
Kentucky Extension IPM Implementation Program: 2024-2027: Scope for Grain Crops
Legleiter, T. (PI), Beale, J. (CoI), Bessin, R. (CoI), Gauthier, N. (CoI), Ritchey, E. (CoI) & Wise, K. (CoI)
9/1/24 → 8/31/27
Project: Research project
Kentucky Extension IPM Implementation Program: 2024-2027
Bessin, R. (PI), Beale, J. (CoI), Gauthier, N. (CoI), Legleiter, T. (CoI), Ritchey, E. (CoI) & Wise, K. (CoI)
9/1/24 → 8/31/27
Project: Research project
[FARM BILL] Southern Integrated Pest Management Center: A Regional Approach to Networking, Collaboration and Services
Gauthier, N. (PI) & Munir, M. (Former CoI)
North Carolina State University
3/1/24 → 2/28/26
Project: Research project
Robert Pearce Scope: Evaluation and Breeding of Diverse Hemp Germplasm for Disease Resistance
Pearce, R. (PI) & Gauthier, N. (CoI)
1/1/24 → 12/31/24
Project: Research project
Evaluation and Breeding of Diverse Hemp Germplasm for Disease Resistance
Gauthier, N. (PI) & Pearce, R. (CoI)
1/1/24 → 12/31/24
Project: Research project
IR-4 Oomycete Pathogens (Pythium & Phytopthora) / Hemp / Control of Root and Crown Rot in Hemp, 2023
Gauthier, N. (PI)
8/1/23 → 7/31/24
Project: Research project
The Agronomy of Hemp and Its Uses in Forage-Animal Agriculture
Matthews, J. (PI), Adam, E. (CoI), Adams, A. (CoI), Ely, D. (CoI), Gauthier, N. (CoI), Harmon, D. (CoI), Hunt, A. (CoI), Ji, H. (CoI), Kawashima, T. (CoI), Lawrence, L. (CoI), Mark, T. (CoI), McCulley, R. (CoI), McLeod, K. (CoI), Moe, L. (CoI), Page, A. (CoI), Pearce, R. (CoI), Schendel, R. (CoI), Urschel, K. (CoI), Vanzant, E. (CoI), Villanueva, R. (CoI) & Xiong, Y. (CoI)
8/1/21 → 7/31/26
Project: Research project
The Agronomy of Hemp and Its Uses in Forage-Animal Agriculture
Gauthier, N. (PI)
8/1/21 → 7/31/26
Project: Research project
Invasive Species As Conduits for Pathogen Spillover Between Natural and Agricultural Systems
Gauthier, N. (PI)
9/1/23 → 8/31/27
Project: Research project
Sustainable Agriculture Research and Education (SARE) 2022: Evaluation of Soil Solarization as a Sustainable Management Method for Pests, Pathogens, and Weeds in Southeastern High Tunnels
Rudolph, R. (PI), Gauthier, N. (CoI), Haramoto, E. (CoI) & Larson, J. (CoI)
4/1/23 → 3/31/26
Project: Research project