Dr. Eric P. Prostko
Professor and Extension Weed Specialist
University of Georgia
Department of Crop and Soil Sciences


The experiments summarized in this report are designed to develop data to support extension weed management recommendations for cotton, field corn, peanuts, grain sorghum, tobacco, and soybeans. Additionally, these experiments demonstrate new and/or proven management practices to growers, county extension agents, agribusiness personnel, and other extension specialists.

Replicated experiments are established for specific needs and are located on university stations or private farms. The experiments are a joint effort of the University of Georgia extension faculty, county extension agents, cooperating research personnel, and cooperating growers. Commodity organizations, seed/chemical companies provide financial support of these experiments.

This publication contains results of use patterns of herbicides, some of which may not be registered for the particular use. Such results are included for informational purposes only and should not be taken as recommendations for use. Additionally, the University of Georgia does not guarantee nor warrant the standards of the products, nor do they imply approval of the products to the exclusion of others which may be similarly effective.

Questions or comments concerning this report may be directed to the author:

Dr. Eric P. Prostko
Professor and Extension Weed Specialist
Department of Crop & Soil Sciences
The University of Georgia
Horticulture Building
104 Research Way
Tifton, GA 31793


This research could not have been conducted without the support of the following individuals or organizations:

County Extension Agent - Cooperators Grower-Cooperators Industry - Cooperators
Adama, Albaugh, AMVAC, BASF, Bayer, Corteva, FMC, Georgia Seed Development Commission, Gowan, Helena, Helm Agro, SePRO, Summit Agro, Syngenta, TeeJet, United Sorghum Checkoff Board, Valent

University of Georgia
Chad Abbott, Charlie Hilton, Tim Richards, Stanley Culpepper, Jenna Vance, Dwayne Dales, Glen Rains, Bob Kemerait, Mark Abney, Cindy LaHue, Jeannie Evans, Taylor Randell, Hannah Wright, Jeannie Evans, Renae Woods.

The data in this report were analyzed using Agricultural Research Manager (ARM) – 2021.2.


Field Corn
CN-01-21 Residual Weed Control with Field Corn HPPD or Group 15 Herbicides (Year 4)
CN-02-21 Prowl H2O Tank-Mixes with Post Field Corn Herbicides (Year 2)
CN-03-21 Roundup + Liberty Tank-Mixes for Weed Control in Field Corn
CN-05-21 Weed Control in Field Corn with Katagon and Helmet Maxx
CN-06-21 Weed Control in Field Corn with Empyros
CN-07-21 Acuron GT for Weed Control in Field Corn
CN-08-21 1-Pass PRE vs. 1-Pass POST Field Corn Weed Control
CN-09-21 Restraint and Shieldex for Weed Control in Field Corn
CN-10-21 AMVAC Field Corn Herbicide Portfolio
CN-11-21 HPPD Herbicides for Weed Control in Field Corn
CN-12-21 Are 2 POST Applications Needed for Field Corn Weed Management?

PE-02-21 Peanut Variety Response to Brake, Classic, and Vulcarus
PE-03-21 GA-18RU Response to Classic
PE-04-21 Peanut Variety Response to Brake (Year 3)
PE-05-21 Peanut Response to Vulcarus (trifludimoxazin/BAS 850-01H) – Year 3
PE-06-21 Peanut Response to Garlon 3A (triclopyr) – Year 2
PE-07-21 Peanut Response to Arsenal Powerline 2AS (imazapyr) – Year 2
PE-08-21 Weed Control in Peanut with Brake – Year 2
PE-09-21 Weed Control in Peanut with Vulcarus (trifludimoxazin) – Year 2
PE-10-21 Peanut Plant-Back After Huskie
PE-11-21 Provysol/Herbicide Tank-Mixes for Peanut
PE-12-21 GPA Effects on Peanut Pest Management with a Commercial Sprayer
PE-14-21 Peanut Response to Reviton Applied PRE or POST
PE-15-21 Weed Control in Peanut with Prowl H2O, Sonalan, and Strongarm
PE-16-21 Anthem Flex for Weed Control in Peanut
PE-17-21 Weed Control in Peanut with SP7104 and Brake
PE-18-21 B-Sure and Gramoxone in Peanuts
PE-42-21 Select Max and Fusilade Timings for Annual Grass Control

SB-01-21 Preemergence Tolerance and Efficacy of Pyroxasulfone and Metribuzin
SB-02-21 Preemergence Tolerance and Efficacy of S-Metolachlor and Flumioxazin
SB-03-21 Preemergence Tolerance and Efficacy of S-Metolachlor and Linuron
SB-04-21 Engenia/Liberty Group 15 Comparison in Soybean
SB-05-21 Efficax with Valor and Fierce in Soybean
SB-06-21 Weed Control in Xtendflex Soybean with MON 119144

GS-01-21 Grain Sorghum Response to Sinbar and Reflex Applied 96 DBP (Year 3)
GS-02-21 Weed Control in Grain Sorghum with New Systems (I-Growth, DoubleTeam, Inzen)
GS-03-21 Weed Control in I-Growth Sorghum with Imiflex and Cadre
GS-04-21 High Load Warrant for Weed Control in Grain Sorghum

CT-02-21 Cotton Plant-Back After Huskie

TB-02-21 Tobacco Response to Soil-Applied Garlon 3A (triclopyr)

BD-01-21 Preplant Burndown Weed Control Programs with Reviton



ATTENTION ! Pesticide Precautions
  1. Observe all directions, restrictions, and precautions on pesticide labels. It is dangerous, wasteful, and illegal to do otherwise
  2. Store all pesticides in original containers with labels intact and behind locked doors. “KEEP PESTICIDES OUT OF REACH OF CHILDREN.”
  3. Use pesticides at correct label dosages and intervals to avoid illegal residues or injury to plants and animals.
  4. Apply pesticides carefully to avoid drift or contamination of non-target areas.
  5. Surplus pesticides and containers should be disposed of in accordance with label instructions so that contamination of water and other hazards will not result.
  6. Follow directions of the pesticide label regarding restrictions as required by State an Federal Laws and Regulations
  7. Avoid any actions that may threaten an Endangered Species of its habitat. Your county extension agent can inform you of Endangered Species in your area, help you identify them and through the Fish and Wildlife Office, identify actions that may threaten Endangered Species of their habitat.