John Byrd, Jr.

John Byrd, Jr.

Extension/Research Professor

Weed Science

Mailing Address:
Box 9555
Mississippi State, MS 39762
Physical Address:
312 Dorman Hall
Mississippi State, MS 39762
Research/Extension Assignments:
  • Invasive weeds
  • Weed management in turf and rights of way
  • Weed management in forage production systems

  • Ph.D., North Carolina State University
  • M.S., North Carolina State University
  • B.S., Clemson University

  • APM Senior Seminar
  • Graduate student research credit hours

Society Membership:
  • Weed Science Society of America
  • National Association of County Agricultural Agents
  • Southern Weed Science Society
  • Mississippi Weed Science Society
  • Mississippi Vegetation Management Association
  • Mississippi Association of County Agricultural Agents
  • Mississippi Exotic Pest Plant Council
  • Southeastern Exotic Pest Plant Council
  • Gamma Sigma Delta

Recognitions and Awards:
  • 2020 Outstanding Extension Award, Weed Science Society of America
  • 2019 Fellow, Southern Weed Science Society
  • 2019 Turney Hernandez Award for Excellence, National Roadside Vegetation Management Association
  • 2019 Regions Bank Division of Agriculture, Forestry and Veterinary Medicine Superior Extension/Outreach Faculty
  • 2019 Mississippi Farm Bureau Agricultural Research
  • 2018 Dr. Mark Keenum Outstanding Extension Faculty


  • Byrd, J., D., V. L. Maddox, J. Taylor. D. P. Russell. 2019. MDOT-MSU Highway Vegetation Management Four-Year Summary Report 2013-2016. Mississippi Agricultural and Forestry Experiment Station Information Bulletin 541, Mississippi State University.  Download
  • Turnage, L. G., J. D. Madsen, R. M. Wersal, J. D. Byrd. 2019. Sequential applications of diquat to control flowering rush (Butomus umbellatus L.) in mesocosms. Invasive Plant Science and Management 12(2):120-123.  Download
  • Byrd, J. D. 2018. Applying herbicides with the hack and squirt method. Mississippi State University Extension Service Publication 3276. Download
  • Byrd, J.D., V. L. Maddox. 2018. Hairy crabweed. Mississippi State University Extension Service Publication 3204. Download
  • Snyder, R. G., M. B. Layton, R. A. Melanson, P. Harris, J. H. Jarratt, F. Killebrew, J. D. Byrd Jr. 2016. Organic vegetable IPM guide. Mississippi State University Extension Service Publication 2036. Download
  • Byrd, J.D., V.L. Maddox, and J.M. Taylor. 2013. An Easy, Effective Way to Control Perennial Woody Weeds in Home Landscapes. MSU-ES Information Sheet. Download
  • Bryson, C.T., K.N. Reddy, J.D. Byrd. 2012. Growth, development, and morphological differences among native and nonnative prickly nightshades (Solanum spp.) of the Southeastern United States. Invasive Plant Science and Management 5(3):341-352. Download
  • Cerdeira, A.L., C.L. Cantrell, F.E. Dayan, J.D. Byrd, S.O. Duke. 2012. Tabanone, a new phytotoxic constituent of Cogongrass (Imperata cylindrica). Weed Science 60(2):212-218. Download
  • Bryson, C.T., L.J. Krutz, G. Ervin, K.N. Reddy, J.D. Byrd. 2010. Ecotype variability and edaphic characteristics for cogongrass (Imperata cylindrica) populations in Mississippi. Invasive Plant Science and Management 3:199-207. Download
  • Maddox, V.L., J.D. Byrd, and B. Serviss. 2010. Identification and control of invasive privets (Ligustrum spp.) in the Middle Southern United States. Invasive Plant Science and Management 3(4):482-487. Download
  • Hutto, K.C., J.M. Taylor, J.D. Byrd. 2007. Evaluation of 2,4-D and 2,4-D mixtures for path rush control in bermudagrass. Weed Technology 21(3):768-770. Download
  • Bryson, C.T, A.M. Fox, J.D. Byrd Jr. 2006. Wetland nightshade (Solanum tampicense) growth response to temperature, and winter survival, in relation to potential spread. Weed Technology 20(3):778-783. Download
  • Hutto, K.C., R.L. King, J.D. Byrd, D.R. Shaw. 2006. Implementation of hyperspectral radiometry in irrigation management of creeping bentgrass putting Greens. Crop Science 46:1564-1569. Download