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, soybeans, and sunflower. 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 and 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
AgSouth Genetics, AMVAC, BASF, Bayer, Belchim, Corteva, FMC, Georgia Corn Commission, Georgia Peanut Commission, Georgia Seed Development Commission, Helena, Meherrin, Monsanto, Pioneer, SePRO, Syngenta, United Sorghum Board, Valent

University of Georgia
Charlie Hilton, Attapulgus Research Station Staff (Billy, Al, William), A. Stanley Culpepper, Timothy L. Grey, Dena Watson, Tim Richards, Jenna Vance, Dwayne Dales, Lenny Wells, Glen Rains, Bob Kemerait, Mark Abney.

The data in this report were analyzed using the Agricultural Research Manager (ARM) – 2018.3 computer program.


Field Corn
CN-01-18 Corn Hybrid Tolerance to Low Rates of ALS Herbicides
CN-02-18 Grass Herbicides with Roundup + Atrazine POST in Field Corn
CN-03-18 Grass Herbicides with Liberty + Atrazine POST in Field Corn
CN-04-18 Field Corn Response to Halex GT at 1X and 2X Rates
CN-06-18 Bayer Field Corn Herbicides Programs
CN-07-18 Weed Control in Field Corn (Monsanto Programs)
CN-08-18 Harness Max Weed Control Systems in Field Corn – PRE fb POST
CN-09-18 Harness Max PRE to Corn and Weeds
CN-10-18 Anthem Flex and Anthem Maxx for Weed Control in Field Corn
CN-11-18 Impact and Impact Z Weed Control Programs in Field Corn
CN-12-18 Weed Control in Enlist Field Corn
CN-13-18 Halex GT with Prowl in Field Corn
CN-17-18 Impact Z With/Without Prowl H20 for Weed Control in Field Corn

PE-02-18 Peanut Response to Multiple Simulated Drift Rates of Xtendimax (1/50X)
PE-03B-18 Peanut Response to Multiple Simulated Drift Rates of Xtendimax + Roundup PowerMax (1/50X)
PE-04-18 Peanut Response to Metribuzin – Year 2
PE-05-18 Peanut Response to Cadre/Cobra/Ultra Blazer/Dual Magnum/Zidua/2,4-DB Tank-Mixtures
PE-06-18 Flumioxazin Formulation Test – Year 2
PE-07-18 Peanut Response to Gramoxone/Storm/Warrant Tank-Mixtures
PE-09-18 Peanut Response to Valor and Dual Magnum – High Moisture Conditions
PE-11-18 Peanut Tolerance to Brake or Valor
PE-12-18 Weed Control in Peanut with Brake
PE-15-18 Anthem Flex for Weed Control in Peanut
PE-16-18 Weed Control in Peanut with Strongarm
PE-17-18 Peanut Weed Control with Auxin Nozzles (AIXR, ULD, TDXL)
PE-18-18 Peanut Response to Sinbar Applied PRE (Year 3)
PE-19-18 Palmer Amaranth Control with Tough (Non-Crop)
PE-20-18 Peanut Tolerance to Tough (Pyridate)
PE-24-18 Palmer Amaranth Control with Ultra Blazer + 2,4-DB vs. Tough + 2,4-DB
PE-99-18 Large Nutsedge Control with Cadre + Dual Magnum With/Without Basagran (Demonstration/Non-Crop)

SB-01-18 Xtend vs. Liberty Weed Control Systems – Demonstration I
SB-03-18 Xtend vs. Liberty Weed Control Systems – Demonstration II
SB-04-18 Weed Control in Soybean with Anthem Maxx
SB-05B-18 Weed Control in LL Soybeans
SB-06-18 FMC Products in Xtend Soybeans
SB-07-18 Tavium + VG for Weed Control in Xtend Soybeans
SB-08-18 Fexapan in Conventional-Till 2 Pass Programs for RR2X Soybeans
SB-09-18 Engenia Pro for Weed Control in Xtend Soybeans

SUN-02-18 Preemergence Weed Control in Clearfield Sunflowers

GS-01-18 Preemergence Weed Control in Grain Sorghum

NZ-01-18 Auxin Nozzles vs. Flat Fan Nozzles for Peanut Pest Management – I (Bulloch County) (XR-11006 vs. TAD06-D)
NZ-02-18 Auxin Nozzles vs. Flat Fan Nozzles for Peanut Pest Management – II (Pierce County) (XR-11006 vs. TTI-11006)
NZ-03-18 Auxin Nozzles vs. Flat Fan Nozzles for Peanut Pest Management – III (Miller County) (XRC-11005 vs. TTI60-11005)



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.