2015 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 canola, 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 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



CONTRIBUTORS

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

County Extension Agents Farmer-Cooperators Industry
AMVAC, BASF, Bayer, Cheminova, Dow AgroSciences, DuPont, FMC, Georgia Seed Development Commission, Helena, Monsanto, NuFarm, Pioneer, Sempro, Sesaco, Syngenta, Valent.


University of Georgia
Charlie Hilton, O. Wendell Carter, Attapulgus Research Station Staff, A. Stanley Culpepper, Dena Watson, Tim Richards, Jenna Smith, Dwayne Dales, Michasia Dowdy.


The data in this report were analyzed using the Agricultural Research Manager –2015.6(ARM) computer program.



TRIALS

Field Corn
CN-01-15 Field Corn Response to POST Herbicides Grown in a High Yield Environment – Year 2
CN-02-15 The Influence of Roundup + Atrazine Applied at Different Times on Yield in a High Input System - Year 2
CN-03-15 Field Corn Response to Roundup + Sandea in a High Yield Environment - Year 1
CN-04-15 DKC62-08 and DKC64-69 Response to ALS Herbicides - Year 2
CN-05-15 Anthem/Anthem ATZ Tank-Mixes for Weed Control in Field Corn
CN-06-15 Annual MG Control in Field Corn
CN-07-15 Keystone NXT for Weed Control in Field Corn
CN-08-15 Corvus, Capreno, and Laudis for Weed Control in Field Corn
CN-09-15 Influence of Impact Programs on Weed Control and Yield of Field Corn in the Southern US
CN-10-15 Field Corn Response to POST Applied Valor - Year 2
CN-11-15 Steadfast Q vs. Revulin Q for Weed Control in Field Corn
CN-12-15 Acuron for Weed Control in Field Corn
CN-13-15 Weed Control in Field Corn without Atrazine or Glyphosate


Peanut
PE-01-15 Peanut Response to Anthem Flex — Weed-Free
PE-02-15 Anthem Flex vs. Other Weed Control Programs in Peanut
PE-03-15 Fungicide Tank-Mixes with Anthem Flex
PE-04A-15 Influence of Time of Day Applications on Peanut Weed Control Systems - I
PE-04B-15 Influence of Time of Day Applications on Peanut Weed Control Systems - II
PE-05AX-15 Influence of Nozzle Type on Weed Control in Peanut - I
PE-05BX-15 Influence of Nozzle Type on Weed Control in Peanut - II
PE-06-15 Peanut Response to 2,4-DB
PE-11x-15 Peanut Response to Grazon P+D
PE-12-15 Peanut Weed Control Programs - I
PE-13-15 Peanut Weed Control Programs - II
PE-14-15 Cadre, Cobra, Dual Magnum, Warrant, and 2,4-DB Peanut Tolerance – Year 3
PE-15-15 GA-12Y Response to Herbicides – Year 2
PE-16-15 GA-13M Response to Herbicides – Year 1
PE-18-15 Brake for Weed Control in Peanut
PE-19-15 Zidua Weed Control Programs for Peanut
PE-25-15 Influence of Nozzle Type on Weed Control with POST Peanut Herbicides — Non-Crop
PE-26-15 Time of Day Effects on Peanut Herbicides — Non-Crop


SOYBEAN
SB-01-15 FirstRate or Classic with Reflex or Prefix for Weed Control in Soybeans
SB-02-15 Authority/Anthem in Soybeans
SB-03-15 Efficacy and Selectivity of CHA-2745 (Pethoxamid) When Applied PRE Alone and in Tank-Mixes to Soybean
SB-04-15 PRE Herbicides for Use In Soybeans
SB-05-15 Effects of HM1151B (Sinister) compared to Reflex in Soybean
SB-07-15 PRE Weed Control in Dicamba-Tolerant Soybeans — Bare-Ground — Non-Crop
SB-08-15 Weed Control in LL Soybeans with Cheetah Max and Other Glufosinate Formulations
SB-10-15 Cobra + Dicamba for Weed Control in Soybeans — Bare-Ground — Non-Crop
SB-11-15 Soybean Weed Control
SB-12-15 MON 63479 (Warrant Ultra) in Soybeans
SB-13-15 Dupont/Pioneer Bolt Soybeans


GRAIN SORGHUM
SG-01-15 Weed Control in Grain Sorghum with Huskie


CANOLA
CAN-01-15 Weed Control in Clearfield Canola
CAN-02-15 Clearfield Canola Response to Simulated Herbicide Residues


SESAME
SM-02-15 Weed Control in Sesame
SM-03-15 Sesame Weed Control Demo


MISCELLANEOUS
NZ-01-15 Influence of Tractor Speed and Spray Boom Height on Spray Coverage and VMD50
NZ-02-15 Spray Coverage and VMD50 with Normal Weed Science Applications



2015 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.