WEED MANAGEMENT UPDATE

1
WEED MANAGEMENT UPDATE
FOR 2008
Jim Martin J.D. Green (12-10-07)
2
GLYPHOSATE PRODUCT UPDATE
Product Formulation Salt Surfactant May be needed Rate for 0.75 lb ae/A
Duramax 4 lb ae/gal DMA No 24 oz
Durango DMA 4 lb ae/gal DMA No 24 oz
Roundup PowerMAX 4.5 lb ae/gal K May be added 21.3 oz
Price of Generics may be slightly higher
3
PARAQUAT PRODUCT UPDATE
PRODUCT FORMULATION RATE/A
Parazone 3 lb/gal 1.3 - 2.7 pt/A
Gramoxone Inteon Firestorm 2 lb/gal 3 lb/gal 2 - 4 pt/A 1.3 - 2.7 pt/A
4
Pre-plant for Burndown Control of Emerged Wild
Garlic and Cool-season Broadleaf Weeds in Corn or
Soybeans.

• EXPRESS (TotalSol)
• Tribenuron
• Apply 14 days before planting
• HARMONY GT (XP)
• Thifensulfuron
• May apply anytime before planting
• HARMONY EXTRA (XP)
• Thifensulfuron Tribenuron
• Apply 14 days before planting

5
SOYBEAN HERBICIDE UPDATE
PRODUCTS ACTIVE INGREDIENTS
Authority First or Sonic Sulfentrazone Cloransulam
Authority MTZ Sulfentrazone Metribuzin
Medal S-metolachlor
Medal II S-metolachlor safener
Brawl II S-metolachlor safener
Prefix S-metolachlor fomesafen
Rage D-Tech Carfentrazone 2,4-D ester
Valor XLT Flumioxazin Chlorimuron
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CORN HERBICIDE UPDATE
PRODUCTS ACTIVE INGREDIENTS
Breakfree Acetochlor safener
Breakfree ATZ Acetochlor Atrazine safener
Surestart Acetochlor Flumetsulam Clopyralid Safener
Medal S-metolachlor
Medal II S-metolachlor safener
Brawl II S-metolachlor safener
Medal AT S-metolachlor Atrazine safener
Halex GT S-metolachlor Glyphosate Mesotrione
Rage D-Tech Carfentrazone 2,4-D ester
Status Diflufenzopyr Dicamba Safener
Laudis Tembotrione safener
7
WHEAT HERBICIDE UPDATE
PRODUCTS Rate
Axial (0.83 EC) 8.2 oz/A (need to add Adigor)
Axial XL (0.42 EC) 16.4 oz/A
Harmony GT XP (75DF) 0.3 to 0.6 oz/A
Harmony SG TotalSol (50DF) 0.45 to 0.9 oz/A
Harmony Extra XP (75 DF) 0.3 to 0.6 oz/A
Harmony Extra TotalSol (50 DF) 0.45 to 0.9 oz/A
Preemergence Ryegrass Control / Suppression Finesse Apply before wheat emergence (Allow 6 months before planting STS soybean) Prowl H2O Apply after wheat emergence (May be mixed with postemergence herbicides)
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HERBICIDE GROUP NUMBER(S) ON PRODUCT LABELS BASED
ON SITE OF ACTION
GROUP NUMBER(S)
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Herbicide Mode of Action Groups
MOA Group CODE Herbicide Classification Products
1 ACCase Inhibitors Assure II, Fusion, Select, Poast
2 ALS Inhibitors (amino acids) Acetolactate Synthase Scepter, Pursuit, Accent, Classic, etc.
5 Photosystem Inhibitors (PS II) Atrazine, Princep
9 EPSP Synthase Glyphosate, Roundup, Touchdown, etc.
14 PPO Inhbitors Blazer, Cobra, Flexstar
27 4-HPPDs (pigment inhibitors) Balance, Callisto
10
Herbicide Tolerant Crop Technology
Multiple gene stacks Glyphosate (RR) / STS - soybean Glyphosate (RR) / LL-corn -----
Liberty Link soybean 2009
Optimum GAT soybean (DuPont) 2009
Optimum GAT corn (DuPont) 2010
Dow Herbicide Tolerant corn 2012
Dow Herbicide Tolerant soybean 2013
Dicamba resistant soybean 2013
Glyphosate HPPD soybean (Bayer) Glyphosate HPPD LL-soybean ???
11
New Herbicide Tolerant Crop Technology

• Multi-stacked Genetics
• CB / CRW / Gly / LL (corn)
• Optimum GAT (DuPont / Pioneer)
• Glyphosate / ALS tolerant (soybean / corn)
• Dicamba tolerant soybean

12
Future Herbicide Tolerant Crops

• Dow Herbicide Tolerant corn soybean
• 2,4-D fops post grass herbicides
• Liberty Link-soybean (Bayer CropSciences)
• Glyphosate HPPD
• Glyphosate HPPD LL-soybean

13
Multiple Resistant Weeds

• Smooth Pigweed Confirmed
• PS II ALS inhibitors 2000 (KY, Other
  states)
• Marestail (Horseweed)
• ALS Glycines 2003 (OH)
• Giant Ragweed
• ALS Glycines 2006 (OH)
• Common Ragweed
• ALS PPO 2005 (DE), 2006 (OH)
• ALS Glycines 2006 (OH)
• Common Waterhemp
• ALS PS II 1996 (IL)
• ALS PPO 2001 (KS)
• ALS PS II PPO 3 MOAs 2002 (IL)
• ALS PPO Glycines 3 MOAs 2005 (MO)
• ALS Glycines 2006 (IL)

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Glyphosate Resistant Weeds
WEED
YEAR
YEAR

• Rigid Ryegrass 1996
• Goosegrass 1997
• Marestail 2000
• Italian Ryegrass 2001
• Hairy Fleabane 2003
• Buckhorn Plantain 2003
• Common Ragweed 2004
• Giant Ragweed 2004
• Common Waterhemp 2005
• Palmer Amaranth 2005
• Johnsongrass 2005
• Wild Poinsettia 2006
• Junglerice 2007

(Source Int. Survey of Herbicide Resistant Weeds)
Found in US
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POTENTIAL ISSUES FOR 2008

• WEEDY ANNUAL GRASSES IN CORN
• Include a Soil Residual Herbicide
• Plant non-RR corn if high risk environments
• Examples wet soil or early planting
• MARESTAIL
• Be timely with 2,4-D
• Use 1 lb (2 pt/A) where possible
• Some products allow 14-25 days preplant interval
• Ex E-99, Weedone 650, Salvo
• Use soil - residual herbicide if early
  application
• Ex. Authority First / Sonic, Authority MTZ,
  Canopy, Canopy EX, FirstRate, Valor SX, Valor XLT