1. New products/formulations 2. XtendFlex/GlytolLibertyLink/Widestrike 3. Conservation Tillage 4. Auxin Tolerant Technologies 5. Reminder of keys for success 2016 Cotton Weed Control

Warrant Ultra Herbicide 1.Mix of Warrant + fomesafen (i.e Reflex). 2.Label: preplant, PRE at-planting, & directed. 3. Monsanto literature: fl oz 4. Suggest (38 oz)= 12oz Reflex + 2.2pt Warrant 5. Add ½ pt of Warrant for Roundup system.

Glufosinate Formulations - Cotton Slide from Prostko

1.Section 18 2.New chemistry for agronomics. 3.Mix of fluridone and fomesafen (i.e. Reflex). 4.Apply PRE behind press wheel (~16 oz/A). 5.Very good for weeds, costly, watch carryover, systems approach required. Non-treatedBrake

1.Similar chemistry as Dual and Warrant. 2.Minimal research in RR or RR/LL cotton. 3.Positioning for dicamba-tolerant cotton? 4.Overtop from 1 leaf – 2 nd wk of bloom. 5.Label: up to 21 oz/A; suggest oz/A.

1.Similar chemistry as Dual and Warrant. 2.DIRECTED application after 7-leaf cotton. 3.Label: 0.75 to 1.5 oz/A; suggest oz/A mixed with Direx + MSMA for longer and better residual control.

1.Valor + Zidua 2.PRECISION DIRECTED, 18+ inch, bark! 3.Label: 3 oz/A 4.Mix with MSMA or Roundup……very good but can be hot stuff.

Different Tolerance to Liberty??

Tolerance to Liberty?? 28 studies Liberty injury less than 15% except for 3 studies conducted under extremely challenging environments.

Ponder Farm June hr after trt Liberty alone 1 X Both cultivars treated with same bottle XtendFlex 1553 ST 6448 ENVIRONMENT EXTREME FOR INJURY

ST 6448DGT-2013Xtend1553WRF 499 Liberty Lib + RU Lib + RU + W LSD = 5.34; CV Percent Visual Cotton Injury. 3 DAT. TyTy GA Environment A. Liberty = 32 oz/A; Roundup Pmax = 32 oz/A; Warrant = 48 oz/A. No adjuvants; 15 GPA. ENVIRONMENT EXTREME FOR INJURY

Using Heavy Rye Covers For Sustainability Rye CoverWeedy Cover

RESEARCH: RYE & CLOVER STRONG 1. Data suggest killing cover > 10 d before plant. 2.Wet soils first 3 wks after plant hurts; raise bed? 3.Blends don’t make sense but research on-going. RYE CLOVER

Delaying Cover Termination Culpepper and Steckel 2015 Termination Timing by Cover Crop Days to 4” Palmer Amaranth POST Application Tifton, GA 2015

Non-treated Auxin Systems Auxin system

Seed: handful Herbicide: 1.Overcome synergism issue (endangered species). 2.Will data need to be developed? Seed: lots Herbicide: 1.Comment period? 2.How long it open? 3.Number of comments? COTTON 2016

% Reflex + Warrant 100 Palmer Control By Liberty/Roundup Based System At Harvest. 5 Loc, GA/NC >96 >99 > Warrant + Direx Warrant + Cotoran Reflex + Direx Brake F16 POST 1: Roundup + Liberty; POST 2: Roundup + Liberty; LPD: Direx + MSMA

Liberty twice 125 d Large Acreage Study. Palmer Amaranth Per Acre at Harvest. Georgia a Lib + RU twice Lib + RU + Warrant twice RU + dicamba + Dual twice PRE: Reflex + Warrant LPD: Direx + MSMA 109 c 33 b POST

Auxin Systems Compared to Today: 1.Weed control better, lower herbicide and hand weeding input costs (not much easier). 2.Crop injury (cotton) more complex. 3.Off-target movement more complex

Auxin Systems 1.Clean at planting 2.Two Residual PRE’s….. 3.Sequential POST’s…….. 4.Layby……

RU + dicamba 1 X 2 X Injury in a Challenging Environment (worst 10% of time?)

Layby……….critical to sustainability!! For Palmer: Direx + MSMA; add Envoke for morningglory. If grasses: Roundup + Direx; add Envoke for morningglory.

The Balancing Act - Auxins More economically effective sustainable programs? Managing off-target movement

Spray Tip Wind Land Terrain Residue Tolerance Spray Pressure Buffers Boom Height Tank Cleanout Proper Formulation UGA’s 15 Factors Influencing Success Sprayer Speed Drift Control Agent Herbicide Footprint/ Surrounding crops Volatility Humidity Size of Crop

2016: UGA-GDA Trainings Georgia Department of Agriculture Industry can join us if they like!

2016 UGA-GDA Classroom Trainings* Feb 22 (Turner/Bacon) Feb 23 (Dooly/Dodge; Brooks/Mitchell) Feb 29 (Early/Terrell; Tattnall+Toombs/Screven) March 1 (/Gordon/Madison; Washington/Emanuel) *Meeting times: ~9 am and ~2 pm except Madison 4 pm. *Training required to spray 2,4-D or dicamba over respective technologies.

people trained growers….do not have to retake training Using Pesticides Wisely! 2015 Locations Feb 9: Bainbridge; Moultrie Feb 10: Tifton, Cordele Feb 11: Americus Feb 12: Waynesboro; Statesboro Feb 13: Alma Mar 17: Hawkinsville; Tifton Mar 18: Statesboro

Grower (#731) % Yes 99.1 Was this training worth your time? All Locations NoYesNoYesNo *Other consisted of Extension, Workers, Dealers, Ginner, Farm Manager, Research, YF Teacher. Consultant (#46) Other* (#98)

% Yes 98 Do you think this training will help you reduce pesticide drift issues? All locations NoYesNoYesNo *Other consisted of Extension, Workers, Dealers, Ginner, Farm Manager, Research, YF Teacher. Grower (#735) Consultant (#47) Other* (#96)

2016 Extension Trainings Classroom Training One-on-one Training ALL PESTICIDES Focus is 2,4-D & Dicamba

KEYS TO SUCCESS - PALMER 1.Palmer free at planting. 2.Select 2 residual PRE’s behind press wheel. 3.Avoid causing injury with Irrigation. A. Ideal plant depth B. Plant into moist soil C. Right rate D. Smart irrigation: once hr after planting; limit it afterwards.

KEYS TO SUCCESS 1.Palmer free at planting. 2.Select 2 residual PRE’s behind press wheel. 3.Avoid causing injury with Irrigation. 4.Sequential POST applications…TIMELY 5.Directed application. 6.Hand weeding. 7.Crop rotation.

WHICH SYSTEM IS THE BEST? Roundup System: 1.Clean at planting. 2.2 residual PRE’s 3.POST 13 d after plant 4.POST 13 d later 5.Timely Layby RU + Liberty System: 1.Clean at planting. 2.2 residual PRE’s 3.POST 17 d after plant 4.POST d later 5.Timely Layby Auxin System: Weed control better; injury more complex; off- target movement far more complex

UGA Extension Education Fund Master’s degree from UGA Tifton while working 2 yr in county with agents Or Master’s degree from UGA Tifton while working 1 yr in county with agents and 1 yr with specialist

UGA Extension Education Fund Extension Faculty Are Committed: 85 K AmVac Bayer DuPont FMC Gowan Helena NuFarm RW Griffin SePro Southern States Syngenta TKI Triangle Triest United Phos. Valent Industry:

Herbicides 6 AM 7 AM 8 AM 10 AM 12 PM 2 PM 7 PM 9 PM Liberty XXXX$$$$X Roundup XXXX$$$$X Reflex XXX$$$$$X Direx $$$$$$XXX Clarity XXX$$$$$X 2,4-D XXX$$$$$X Gramoxone $$$$$$$$ Time of Day Impact on Palmer Amaranth Control by Various Herbicides XX = worst level of control; X = low level of control; $ = highest level of control Times provided in the top row of the table are when applications were made.