2023 SUMMARY OF FIELD CROP WEED MANAGEMENT RESEARCH

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



INTRODUCTION

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



CONTRIBUTORS

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

County Extension Agent - Cooperators Grower - Cooperators Industry - Cooperators
Actylis, AMVAC, BASF, Bayer, Corteva, FMC, Georgia Corn Commission, Georgia Seed Development Commission, Georgia Soybean Commission, Gowan, GreenPoint AG, Helena, Helm Agro, Nutrien, Pioneer, SePRO, Summit Agro, Syngenta, TeeJet, Valent


University of Georgia
Nick Shay, Charlie Hilton, Tim Richards, Stanley Culpepper, Jenna Vance, Taylor Randell-Singleton, Dewayne Dales, Abby Rigsby, Abby Deltoro


The data in this report were analyzed using Agricultural Research Manager (ARM) – 2023.3



TRIALS

Field Corn
CN-01-23 Weed Control in Field Corn without Atrazine or Roundup
CN-02-23 Weed Control in Field Corn with HPPD Herbicides – No Roundup or Liberty
CN-03-23 Counter with Shieldex or Empyros in Field Corn – Year 2
CN-04-23 Pre/Post Sandea in Field Corn With/Without Counter In-Furrow – Year 2
CN-05-23 Field Corn Response to Post Applied Diuron – Year 2
CN-06-23 Weed Control in Field Corn with Callisto – No Atrazine/Roundup/Liberty
CN-07-23 Weed Control in Field Corn with Impact – No Atrazine/Roundup/Liberty
CN-09-23 Weed Control in Field Corn with Laudis – No Atrazine/Roundup/Liberty
CN-10-23 Counter 20G Effects on Preemergence Herbicides in Field Corn
CN-11-23 Weed Control in Field Corn with Kyro, Maverick, and Resicore XL
CN-12-23 Weed Control in Field Corn with Storen
CN-13-23 Weed Control in Field Corn with HPPD Herbicides and Anthem Maxx
CN-14-23 Field Corn Safety to Assure II Soil Residues
CN-15-23 Weed Control in LL Corn with Restraint/Shieldex and Roundup + Liberty
CN-16-23 Steadfast Q and Callisto With/Without Prowl H20
CN-18-23 Pioneer 2042VYHR Response to 1X, 2X, 3X Rates of Liberty


Peanut
PE-01B-23 Peanut Response to Milestone 3LC (aminopyralid) – Year 1
PE-03-23 GA-12Y Response to Classic – Year 2 (weed-free)
PE-04-23 GA-12Y Response to PRE Applications of Rexovor and Brake – Year 2 (weed-free)
PE-05-23 Peanut Response to Reviton – Year 3
PE-06-23 Multi-Cultivar/Classic Test – Year 3 (weed-free)
PE-07-23 GA-16HO response to Classic – Year 2 (weed-free)
PE-09-23 Brake and Rexovor Timings in Peanut – Year 2 (weed-free)
PE-10-23 Length of Residual Control in Peanut with Rexovor (trifludimoxazin, BAS-850-01H)
PE-11-23 Bastante/Diclom vs. Broadloom/Strongarm in Peanut
PE-12-23 Reglone vs. Gramoxone for Weed Control in Peanut
PE-13-23 Brake, Valor, Strongarm, Rexovor Combinations for Weed Control in Peanut
PE-14-23 Weed Control in Peanut with Caparol
PE-15-23 Anthem Flex Weed Control in Peanuts
PE-112-23 Spreading Dayflower Control in Peanuts (non-replicated)


SOYBEAN
SB-01-23 Soybean Response to HPPD Herbicides – 30 DAT
SB-02-23 Soybean Response to HPPD Herbicides – 58 DAT
SB-03-23 Soybean Response to HPPD Herbicides – 92 DAT
SB-04-23 Weed Control in Enlist Soybeans with Different GPA and Spray Tips – Year 2
SB-05-23 Preemergence Weed Control in Soybeans
SB-06-23 AMV5233D (Zalo) vs. Liberty and Generic Glufosinate + Assure II


GRAIN SORGHUM/SWEET SORGHUM
GS-01-23 Grain Sorghum Response to Sinbar and Reflex Applied 94 DBP – Year 5
SS-01-23 Sweet Sorghum Response to Herbicides


BURNDOWN
BD-01-23 Preplant Burndown Test - 2023


MISCELLANEOUS
BG-01-23 Foliar Boron with Roundup PowerMax3 (Bare-Ground)
PURSLANE-01-22 Postemergence Control of Pink Purslane in the Greenhouse
PURSLANE-02-23 Postemergence Control of Pink Purslane in the Field – Test 1
PURSLANE-03-23 Postemergence Control of Pink Purslane in the Field – Test 2



2023 TEMPERATURE/RAINFALL DATA




PESTICIDE PRECAUTIONS

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.