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  1. Home
  2. Mark Czarnota

Mark Czarnota


Associate Professor; Emphasis: weed control in ornamentals, small fruits, Christmas trees

Horticulture

Mark Czarnota
Mark Czarnota
Areas of expertiseAboutEducationScholarly works

Areas of expertise

Horticultural ProductionHorticultural Crop Protection (Pests, Diseases and Weeds)Horticultural Crop Growth and Development

About

Dr. Mark Andrew Czarnota is an Associate Professor (23% Research, 57% Extension, 15% Service, 5% Teaching) in the Department of Horticulture at the University of Georgia, Griffin Campus. His job responsibilities include supporting the nursery and landscape, Christmas tree, floriculture, and small fruit industries with weed control problems they might be encountering. He has been involved in the Plant Science Field all his life. He has held positions in landscape maintenance, commercial nurseryman, nursery sales, and as a laboratory technician between his many years of schooling. He received a B.S. degree in Agriculture specializing in Plant Science from the University of Delaware, M.S. in Agriculture specializing in Weed Science from Virginia Tech, and a Ph.D. in Floriculture and Ornamentals Horticulture specializing in Weed Science from Cornell University. As an extension specialist at the University of Georgia, he supports the nursery, landscape, Christmas tree, and small fruit industries by working with the agricultural chemical industry, federal government, and local grower groups to try and solve weed problems. In his personal life, Dr. Czarnota has been married for 20+ years, has 2 children, and a few dogs. His major hobbies include gardening, taekwondo, weight training, wood / metal working, and enjoying time with the family!

Education

Doctor of Philosophy, Horticultural Science

Cornell University, NY, United States (2001)

Master of Science, Agriculture, General

Virginia Polytechnic Institute & State University – Blacksburg, VA, United States (1995)

Bachelor of Science, Plant Sciences, General

University of Delaware, DE, United States (1989)

Scholarly Works

  • Mode of action, localization of production, chemical nature, and activity of sorgoleone: A potent PSII inhibitor in Sorghum spp. root exudates, WEED TECHNOLOGY, (2001).
    Czarnota MA, Paul RN, Dayan FE, Nimbal CI, Weston LA
  • Evaluation of root exudates of seven sorghum accessions, JOURNAL OF CHEMICAL ECOLOGY, (2003).
    Czarnota MA, Rimando AM, Weston LA
  • A new photosystem II electron transfer inhibitor from Sorghum bicolor, JOURNAL OF NATURAL PRODUCTS, (1998).
    Rimando AM, Dayan FE, Czarnota MA, Weston LA, Duke SO
  • Anatomy of sorgoleone-secreting root hairs of Sorghum species, INTERNATIONAL JOURNAL OF PLANT SCIENCES, (2003).
    Czarnota MA, Paul RN, Weston LA, Duke SO
  • First Report of Pronamide-Resistant Annual Bluegrass (Poa annua), WEED SCIENCE, (2017).
    McCullough PE, Yu J, Czarnota MA

View full list of scholarly works

Contact

mac30@uga.edu 770-228-7398

Mailing Address

1109 Experiment Street
Cowart Building
Griffin, GA 30223

Shipping Address

1109 Experiment Street
Cowart Building
Griffin, GA 30223

  • UGA – Horticultural Department

Stories

  • Gardening
    July 18, 2024

    Detect and protect: Expert tips to identify and control poison ivy

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  • Dec. 23, 2020

    A Southern fir Christmas tree is on the horizon for ornamental and timber industries

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  • June 28, 2018

    Identifying poison ivy isn’t as easy as ‘leaves of three’

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  • May 22, 2014

    Kill weeds now before they take over vegetable garden, landscape

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  • Nov. 21, 2013

    A healthy Christmas tree is the first step to decking the halls

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  • Nov. 20, 2013

    Georgia Christmas tree acreage is down, but prices are up

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Expert Resources

  • Forestry and Christmas Trees

    April 7, 2026

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  • Fruit and Nuts

    April 7, 2026

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  • Ornamentals

    April 7, 2026

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  • Ornamentals

    March 18, 2026

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  • Controlling Poison Ivy in the Landscape

    July 29, 2025

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  • greenbrier is a vine with thorns and bright green heart-shaped leaves

    Controlling Greenbrier

    May 14, 2014

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