Herbicide Research

If we've left out important UTIA personnel or resources, please send us a link.


Robert M. (Bob) Hayes
Director and Professor
Weed Science

Groups and Facilities

(1 mention)

Weed Diagnostics Center 
Diagnostic testing for weeds of crop and non-crop systems including turfgrass, ornamentals, and utility rights of way.

(1 mention)

Turfgrass Weeds 
Turfgrass weed management recommendations and publications.



Dicamba Briefing, 11/27/2017

Neal Stewart Nominated for UT Presidentís Discover Award, 10/9/2017

UTIA Faculty Spotlight | Dr. Jim Brosnan, 7/18/2017

High Hopes for Tennessee Cotton, 4/17/2017

Answers to Farmersí Questions, 10/22/2016


(7 mentions)

Weed Research 
A climate that's good for a variety of crops means many types of weeds also thrive. UT AgResearch works to help farmers battle this yearly problem that can greatly affect their yields.

(6 mentions)

Sweet corn 
UT AgResearchers applied herbicides to experimental sweet corn to keep weeds away. But something unexpected happened -- they boosted the nutritional value of the corn.

(4 mentions)

Weed Progress 
Weeds are a nuisance to gardeners, but downright devastating to those who farm for a living. But now experts and farmers say the worst may be behind us.

(1 mention)

Nozzle Selection 
Nozzle selection has been simplified over the years, but different types of nozzles are needed for different situations.

(1 mention)

Weed Olympics 
We've had an Olympic competition here in Tennessee involving ... plants. More specifically, plants we don't like or want. It's called the 'Weed Olympics' on the UT agriculture campus.


Recent Publications

Using groundcover to Outcompete Tall Fescue (Festuca arundinacea ) without outcompeting tree seedlings on a legacy mine site.  Aldrovandi, M., and J. A. Franklin.  2018.  Proceedings of the American Society of Mining and Reclamation, St. Louis, MO, June 3-7, 2018. [Abstract]

Smooth crabgrass control in bermudagrass with autumn applications of dinitroaniline herbicides.  Breeden, G. K., J. T. Brosnan, T. W. Gannon, S. R. Brinton, and P. J. Maxwell.  2018.  Proc. Southern Weed Science Society, 71:261.

Herbicides: whatís new for 2018?.  Brosnan, J. T.  2018.  SPORTSTURF. March 2018. pp. 22-23..

Influence of residual herbicide application rate on PPO-resistant and susceptible Palmer amaranth (Amaranthus palmeri) in Tennessee Copeland, D, M. Wiggins, and L. E. Steckel.  2018.  WSSA Proceedings 2018:14.

Tolerance of native ornamental grasses to over-the-top applications of Pylex herbicide Marble, C. M., M. T. Elmore, and J. T. Brosnan.  2018.  HortScience53:842-849.

Use of fraze mowing and herbicides to eradicate bermudagrass.  McCalla, J. H., G. K. Breeden, M. D. Richardson, and J. T. Brosnan.  2018.  ASA-CSSA Annual Meeting, [USB-Flash].

Comparison of Symmetrical and Asymmetrical Triazine Herbicides for Enhanced Degradation in three midwestern soils.  Mueller, T. C., and L. E. Steckel.  2018.  Weed Science, 66:673-679.

Control of Protoporphyrinogen Oxidase Inhibiting Herbicide Resistant and Susceptible Palmer Amaranth (Amaranthus palmeri) with Soil-Applied Protoporphyrinogen Oxidase-Inhibiting Herbicides.  Mueller, T. C., and L. E. Steckel.  2018.  Weed Technology, 32:95-100.

A comparison of symmetrical and asymmetrical triazine herbicides for enhanced degradation in three Midwestern soils.  Parker, E.T., M. Owen, M. Benards, W. Curran, L. E. Steckel, and T. C. Mueller.  2018.  Weed Science, 66:673-679.

Preliminary Comparisons of Herbicides and Application Procedures to Promote Size of Advanced Oak and Yellow-Poplar Reproduction After Harvest.  Peairs, S. E., and W. K. Clatterbuck.  2018.  Proceedings, 19th Biennial Southern Silviculture Research Conference, Virginia Tech University, Blacksburg, VA, March 14-16, 2017. e-Gen. Tech. Rep. SRS-234. Asheville, NC: USDA Forest Service, Southern Research Station., p. 19-23.

How to evaluate and manage herbicide injured cotton.  Raper, T. B.  2018.  Farms.com.

How to evaluate and manage herbicide injured cotton.  Raper, T. B.  2018.  The Seam.