Dr. Jeff Hoy

Jeffrey W. Hoy

Floyd S. Edmiston, Sr. Professor in Agriculture and Natural Resource Management

A445 Life Sciences Annex
Baton Rouge, LA 70803
Phone: 225-578-1392
Fax: 225-578-1415
E-mail: JHoy@agcenter.lsu.edu

Curriculum Vitae


B.A. in History, Hendrix College, Conway AR - 1974
M.S. in Plant Pathology, University of Arkansas - 1978
Ph.D. in Plant Pathology, University of California at Davis - 1983

Areas of Specialization/Research

Pathogens and diseases affecting sugarcane, all aspects of disease management, conventional and molecular selection for host plant resistance, Pythium, and changes in soil microbial communities associated with sugarcane monoculture. Cooperative extension effort (25%) for sugarcane pathology educational programs.

Project LAB94515 Sugarcane Pathology Research

  1. To increase understanding of the biology of sugarcane diseases and improve management practices to minimize losses
  2. To evaluate resistance to diseases as part of the sugarcane variety development program
  3. To evaluate management practices for stalk rot and improve the reliability of billet planting
  4. To minimize the impact of systemic diseases through support for certified seedcane programs and infection monitoring

I have a commodity-based pathology research program and enjoy conducting applied and basic research on a variety of pathogens and diseases affecting sugarcane. The disease problems affecting sugarcane in Louisiana have dictated my research program priorities. Sugarcane is an important commodity in Louisiana with an estimated economic impact of $2.7 billion. It is produced on approximately 450,000 acres by 475 mostly "Cajun" family farming operations. Sugarcane has been commercially cultivated in south Louisiana for more than 200 years. It is a great pleasure to conduct pathology research in support of this important, traditional industry.

Teaching Experience

PLHL 7083 - Epidemiology and Crop Loss Assessment, 3 hour lecture course.

This course introduces graduate students to basic concepts of interactions between pathogen and host populations and the environment, the description and prediction of disease increase in time and space, implications for disease management, and techniques to assess losses to plant diseases.


Fickett, N. D., Ebrahimi, L., Parco, A. P., Guitierrez, A. V., Hale, A. H., Pontif, M. J., Todd, J., Kimbeng, C. A., Hoy, J. W., Ayala-Silva, T., Gravois, K. A., Baisakh, N. 2020. An enriched sugarcane diversity panel for utilization in genetic improvement of sugarcane. Scientific Reports 10:13390. doi.org/10.1038/s41598-020-70292-8.  

Rice, J. L., and Hoy, J. W. 2020. Recovery from mosaic caused by Sorghum mosaic virus in sugarcane and impact on yield. Plant Dis. 104:3166-3172. https://doi.org/10.1094/PDIS-02-20-0376-RE 

Bigott, A. F., Hoy, J. W., and Fultz, L. M. 2019. Soil properties, microbial communities, and sugarcane yield in paired fields with short- or long-term sugarcane cultivation histories. Appl. Soil Ecol. 142:166-176. doi.org/10.1016/j.apsoil.2019.04.027.

Rice, J. L., Hoy, J. W., and Grisham, M. P. 2019. Sugarcane mosaic distribution, incidence, increase, and spatial pattern in Louisiana. Plant Dis.103:2051-2056.

Gutierrez, A. F., Hoy, J. W., Kimbeng, C. A., and Baisakh, N. 2018. Identification of genomic regions controlling leaf scald resistance in sugarcane using a bi-parental mapping population and selective genotyping by sequencing. Frontiers Plant Sci.: https://doi.org/10.3389/fpls.2018.00877.

Marques, J. P., Hoy, J. W., Appezzato-da-Gloria, B., Gutierrez, A. F., Vieira, M. L. C., and Baisakh, N. 2018. Sugarcane cell wall-associated defense responses to infection by Sporisorium scitamineum. Frontiers Plant Sci.: https://doi.org/10.3389/fpls.2018.00698.

Gutierrez, A., Garces, F.F., and Hoy, J.W. 2016. Evaluation of resistance to leaf scald by quantitative PCR of Xanthomonas albilineans in sugarcane. Plant Dis. 100:1331-1338.

Hoy, J.W., Baisakh, N., Avellaneda, M.C., Kimbeng, C.A., and Hale, A.H. 2016. Detection, breeding, and selection of durable resistance to brown rust in sugarcane. Proc. Int. Soc. Sugar Cane Technol. 29:1034-1039.

Hoy, J.W., Avellaneda, M.C., and Bombecini, J. 2014. Variability in Puccinia melanocephala pathogenicity and resistance in sugarcane cultivars. Plant Dis. 98:1728-1732.

Barrera, W.A., Hoy, J.W., and Li, B. 2013. Effects of temperature and moisture variables on brown rust epidemics in sugarcane. J. Phytopathol. 161:98-106.

Hoy, J.W., Savario, C.F., Arceneaux, A.E., and Barrera, W.A. 2011. Effects of cultivar and environmental conditions on billet planting tolerance. J. Amer. Soc. Sugar Cane Technol. 31:1-14.

Savario, C.F., and Hoy, J.W. 2011. Microbial communities in sugarcane soils with and without a sugarcane cropping history. Plant and Soil 341:63-73.

Hoy, J.W., and Hollier, C.A. 2009. Effect of brown rust on yield of sugarcane in Louisiana. Plant Dis. 93:1171-1174.

McAllister, C.D., Hoy, J.W., and Reagan, T.E. 2008. Temporal increase and spatial distribution of sugarcane yellow leaf and infestations of the aphid vector, Melanaphis sacchari. Plant Dis. 91:607-615.

Hoy, J. W., and Grisham, M. P. 2006. Effects of harvester type, inoculum source, and cultivar on spread of ratoon stunting disease. Sugar Cane International 24(3):3-6,13.

Daugrois, J. H., Hoy, J. W., and Griffin, J. L. 2005. Protoporphyrinogen oxidase inhibitor herbicide effects on Pythium root rot of sugarcane, Pythium species, and the soil microbial community. Phytopathology 95:220-226.

Bond, J. P., McGawley, E. C., and Hoy, J. W. 2004. Sugarcane growth as influenced by nematodes and Pythium arrhenomanes. Nematropica 34:245-256.

Hoy, J. W., Richard, C. A., Jackson, W. R., and Waguespack, H. L., Jr. 2004. Effects of cultivars, fungicides, and fertilization at planting on yields obtained from whole stalk and billet planting in Louisiana. J. Amer. Soc. Sugar Cane Technol. 24:70-80.

Hoy, J. W., Bischoff, K. P., Milligan, S. B., and Gravois, K. A. 2003. Effect of tissue culture explant source on sugarcane yield components. Euphytica 129:237-240.

Hoy, J. W., and Flynn, J. L. 2001. Control of ratoon stunting disease of sugarcane in Louisiana with seedcane produced through micropropagation and resistant cultivars. Proc. Int. Soc. Sugar Cane Technol. 24:417-421.

Dissanayake, N., and Hoy, J. W. 1999. Organic material soil amendment effects on root rot and sugarcane growth and characterization of the materials. Plant Disease 83:1039-1046.

Yin, Z., Hoy, J. W., and Milligan, S. B. 1996. Evaluation and heritability of resistance to sugarcane red rot. Phytopathology 86:662-667.

Hoy, J. W., and Grisham, M. P. 1994. Sugarcane leaf scald distribution, symptomatology, and effect on yield in Louisiana. Plant Disease 78:1083-1087.

Chen, W., Hoy, J. W., and Schneider, R. W. 1992. Species-specific polymorphisms in transcribed ribosomal DNA of five Pythium species. Exp. Mycol. 16:22-34.