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 field corn, peanuts, grain sorghum, 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
AMVAC, BASF, Bayer, Corteva, FMC, Georgia Seed Development Commission, Gowan, SePRO, Summit Agro, Syngenta, TeeJet, 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

The data in this report were analyzed using Agricultural Research Manager (ARM) – 2020.2.


Field Corn
CN-01-20 Residual Weed Control with Field Corn HPPD Herbicides Applied to Bare Ground – Year 2
CN-02-20 Laudis + Atrazine + MSO + Other Grass Herbicides
CN-06-20 Influence of Application Timing on Spray Coverage, Weed Control, and Yield of Field Corn Using A Commercial Sprayer (Miller County)
CN-07B-20 Impact Core and Sinate for Weed Control in Field Corn
CN-08BB-20 Sinate + WSSA Group 15 Tank-Mixes for Weed Control in Field Corn
CN-09B-20 Field Corn Weed Control with Bayer Herbicides
CN-10B-20 Halex GT vs. Acuron GT in Field Corn
CN-14-20 Shieldex for Weed Control in Field Corn

PE-02-20 Peanut Response to Fall Applied Metribuzin
PE-03-20 Peanut Response to Garlon 3 (triclopyr)
PE-05-20 Dual Magnum vs. Warrant vs. Zidua vs. Anthem Flex vs. Outlook Weed Control Programs in Peanut
PE-06-20 Peanut Variety Response to Brake – Weed-Free – Year 2
PE-08-20 Peanut Variety Response to Trifludimoxazin (BAS-850-01H) – Weed-Free – Year 2
PE-09-20 Peanut Response to Roundup + Xtendimax At Low Rates and Multiple Events – Year 2
PE-10-20 Peanut Response to Arsenal Power Line (imazapyr)
PE-11-20 Prowl or Sonalan with Different Valor Formulations
PE-12-20 Anthem Flex – Weed Control and Crop Response in Peanut
PE-13-20 Weed Control in Peanut with Brake
PE-14-20 Weed Control in Peanut with Trifludimoxazin (BAS-850-01H)
PE-15-20 Peanut Response to POST Applied Diuron – Year 2
PE-16-20 Peanut Response to Soil Applied Glyphosate at High Rates
PE-17-20 Warrant vs. Dual Magnum vs. Outlook Weed Control Programs
PE-18-20 Peanut Response to Group 15 Herbicides (weed-free)
PE-19-20 Peanut Weed Control with Pursuit
PE-20-20 Peanut Weed Control Programs (Berrien County)
PE-21-20 Peanut Response to Soil Applied Liberty
PE-38-20 Hairy Indigo Control in Peanut (Echols County)
PE-39-20 Hairy Indigo Control in Peanut – II (Lowndes County)
PE-41-20 Hairy Indigo Control in Peanut – III (Lowndes County)

SB-01-20 Liberty and Engenia for Weed Control in XtendFlex Soybeans (bare-ground/non-crop)

GS-01-20 Grain Sorghum Response to Sinbar and Reflex – Year 2
GS-02-20 Weed Control in Grain Sorghum with Huskie and Huskie FX

BG-01-20 Brake (fluridone) and Vulcarus (trifludimoxazin) Applied to Bare-Ground (non-crop)
CT-01-20 Controlling Volunteer Xtend Cotton
FP-01-20 Weed Control in Winter/Field Peas
NZ-01-20 TTI-XRC-TTI60 Nozzle Types for Pest Control in Peanut (Bulloch County)



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.