2009 WEED MANAGEMENT EXPERIMENTS
COTTON; VEGETABLES

Dr. A. Stanley Culpepper
Professor and Extension Weed Specialist
University of Georgia
Department of Crop and Soil Sciences
Tifton, GA


INTRODUCTION

The experiments summarized in this report are designed to develop data to support extension weed management recommendations for cotton, small grains, and vegetables. 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 personnel, county extension personnel, cooperating research personnel, and cooperating growers. Many commodity organizations and chemical companies provide 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. A. Stanley Culpepper
229-386-3328
stanley@uga.edu



CONTRIBUTORS

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

County Extension Agents Commodity Organizations Industry
Aquatrols, BASF, Bayer CropScience, Brandt, Cheminova, Dow AgroSciences, DuPont, Helena, Lab Services, Makhteshim Agan, Monsanto, Nova Source, Syngenta, UPI, Valent

University of Georgia
Research Stations:
Attapulgus Research Station, Plains Research Station, Ponder Farm Research Station
Technicians:
Jessica Daniels, Jess Parker, Tim Richards
Post Doctorial Research Associate:
Lynn Sosnoskie
Data Entry:
Leanne Chafin
Student Workers:
April Richards, Jenna Smith, Ansley Burgess


TRIALS

Cotton
C1-09Impact of deep tillage, cover crop, and herbicide program on the control of glyphosate-resistant Palmer amaranth.
C2-09 Impact of deep tillage on the control of glyphosate-resistant Palmer amaranth.
C3-09 BAS 80004H, Valor, and Reflex applied prior to cotton planting and glyphosate-resistant Palmer amaranth emergence
C4-09 Palmer amaranth seed return as impacted by weed management program.
C5-09 Palmer amaranth programs in conservation tillage with weedy cover.
C6-09 GR Palmer amaranth response to RR and LL weed management programs.
C7-09 GR Palmer amaranth and cotton response to acetochlor progams.
C8-09 Response of GR Palmer amaranth, grasses, and other broadleaf weeds to 2,4-D, DHT-014, and Clarity alone or mixed with Ignite.
C8B-09 Response of GR Palmer amaranth, grasses, and other broadleaf weeds to 2,4-D, DHT-014, and Clarity alone or mixed with Ignite.
C8C-09 Response of GR Palmer amaranth, grasses, and other broadleaf weeds to 2,4-D, DHT-014, and Clarity alone or mixed with Ignite.
C8D-09 Response of tropical spiderwort, pitted morningglory, and broadleaf signalgrass to 2,4-D, DHT-014, and Clarity alone or mixed with Ignite.
C9-09 GR Palmer amaranth and cotton response to Flexstar and Flexstar GT.
C10-09 GR Palmer amaranth response to Valor preplant burndown applciations.
C11-09 GR Palmer amaranth response to directed mixtures of Valor and diuron.
C16-09 Controlling GR Palmer amaranth in corn with DHT systems.
C17-09 Controlling GR Palmer amaranth in corn with DHT systems with Weedar, glyphsoate, and Clarity.
C18-09 Managing GR Palmer amaranth in LL and RR cotton.
C20-09 Firstshot for spring burndown in Georgia.
C21-09 Cutleaf eveningprimrose response to BAS 8004H applied at burndown.
C22-09 Primrose, false dandelion, and wild radish response to glyphosate and phenoxy formulations.
C23-09 GR Palmer amaranth and cotton response to Milo-Pro.
C24-09 Cotton and Palmer amaranth response to Dawn applied preplant or PRE.
C25-09 Palmer response to preplant and at planting control options.
C29-09 RR cotton response to Milo-Pro applied PRE and POST.
C30-09 Evaluation of Staple LX and Dual Magnum in combinations.
C31-09 Annual grass response to S-3970 and S-3530.
C32-09 Glytol + Liberty Link cotton tolerance to glyphosate and glufosinate.
C33-09 Weed and cotton response to ET plus low rates of glyphosate at burndown.
C34-09 Cotton response to phenoxy formulations applied preplant.
C35-09 Seed yield, gin turnout, lint yield, and fiber quality comparisons of DP 555, DP 0935, PHY 485, and FM 1845 when growing in an ideal environment.
C36-09 Mature wild radish response to burndown herbicides.
C37-09 Cotton and weed response to Pyrimax and Staple applied PRE and POST.
C38-09 GR Palmer amaranth response to residual herbicide applied PPI or PRE.
C39-09 Twelve inch GR Palmer amaranth response to burndown herbicides. Prot (Mak1)
C40-09 Comparing weed control, seed yield, gin turnout, lint yield, and fiber quality among DP 555, DP 0935, FM 1845, and PHY 485.
C41-09 Four- to six-inch GR Palmer amaranth response to burndown herbicides. Prot (Mak1)
C42-09 Cotton response to low rates of 2,4-D applied preplant and PRE.
C45-09 Cotton and weed response to Milo-Pro applied PRE and POST.
C46-09 Evaluation of Staple LX and Dual Magnum in combinations.
C47-09 Cotton response to residual herbicide applied PPI or PRE.
C49-09 Pitted morningglory, signalgrass, & spiderwort response to directed herbicides.
C50-09 Weed and cotton response to residual herbicides applied at planting.
C51-09 Controlling large GR Palmer amaranth with Remedy, Weedar, Clarity and Ignite.
C52-09 Glyphosate-resistant Palmer amaranth response to glyphosate and glufosinate alone and mixed with various adjjuvants.
C53-09 Glyphosate-resistant Palmer amaranth response to Ignite, Weedar, Clarity, DHT-014, Remedy, and Direx.
C56-09 Grass response to clethodim alone or mixed with adjuvants.
C57-09 Cotton and weed response to KFD-51-01.


Vegetables
Veg1-09 Seeded onion tolerance to Goal Tender, diuron, 2,4-D, MCPA, and Ignite.
Veg2-09 Transplant onion response to Dual Magnum, Outlook, Goal, Prowl, 2,4-D, Ignite.
Veg3-09 Tomato, pepper, eggplant, and watermelon response to Eptam.
Veg4-09 Pepper response to Eptam and Dual Magnum.
Veg5-09 Pepper response to Eptam and Dual Magnum.
Veg7-09 Pepper response to DMDS and herbicide systems under VIF mulch.
Veg8-09 Bell pepper and nutsedge response to MIDAS alone or with various herbicides.
Veg9-09 Watermelon and weed response to Paladin under three mulches compared to the 3-WAY under LDPE mulch.
Veg10-09 Tomato, pepper, and cantaloupe response to sulfentrazone applied under mulch and on bare soil.
Veg12-09 Transplant tomato, pepper, and cantaloupe response to Sinbar applied under mulch and on bare soil.
Veg13-09 Tomato, pepper, and cantaloupe response to V-10142 alone and with sulfentrazone applied under mulch.
Veg13F-09 Fall squash, cucumber, and broccoli response to spring applications of V-10142 alone or mixed with sulfentrazone applied under mulch.
Veg14-09 Tomato tolerance to metribuzin applied topically and directed.
Veg15-09 Squash and cucumber response to Goal, ET, and Roundup applied over mulch prior to transplant.
Veg17-09 Sweet corn and weed response to Laudis weed management programs.
Veg18-09 Pepper, cantaloupe and squash response to Reflex applied preplant or in row middles.
Veg20-09 Tomato and cantaloupe response to simulated drift rates of 2,4-D, DHT-014, and triclopyr.
Veg22-09 Cucurbit response to MAT 28 and Dual Magnum applied pre-transplant.
Veg23-09 Clover response to Sandea applied POST.
Veg25-09 Developing alternatives to methyl bromide and the 3-WAY.
Veg26-09 Weed and tomato response to halosulfuron coated BIG mulch.
Veg27-09 Weed and pepper response to a potentially new fumigant.
Veg30-09 Vegetable response to ethyoxysulfuron-treated BIG film
Veg32-09 Tomato, pepper, squash and cucumber response 2,4-D amine and dicamba.
Veg33-09 Transplant Broccoli Response to Dual and Treflan Programs.
Veg34-09 Seeded Broccoli Response to Dual and Treflan Programs.
Veg35-09 Seeded carrot response to Dual Magnum and Goal 4F
Veg36-09 Weed response to Devrinol formulations applied PRE. Applied 96 hours before irrigation.
Veg37-09 Weed response to Devrinol formulations applied PRE. Applied 72 hours before irrigation.
Veg38-09 Weed response to Devrinol formulations applied PRE. Applied 48 hours before irrigation.
Veg39-09 Weed response to Devrinol formulations applied PRE. Applied 24 hours before irrigation.

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.