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WEED MANAGEMENT UPDATE

WEED MANAGEMENT UPDATE. FOR 2008. Jim Martin & J.D. Green (12-10-07). GLYPHOSATE PRODUCT UPDATE. Price of Generics may be slightly higher. PARAQUAT PRODUCT UPDATE. Pre-plant for “Burndown” Control of Emerged Wild Garlic and Cool-season Broadleaf Weeds in Corn or Soybeans.

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WEED MANAGEMENT UPDATE

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  1. WEED MANAGEMENT UPDATE FOR 2008 Jim Martin & J.D. Green (12-10-07)

  2. GLYPHOSATE PRODUCT UPDATE Price of Generics may be slightly higher

  3. PARAQUAT PRODUCT UPDATE

  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

  6. CORN HERBICIDE UPDATE

  7. WHEAT HERBICIDE UPDATE

  8. HERBICIDE GROUP NUMBER(S) ON PRODUCT LABELS BASED ON ‘SITE OF ACTION’ GROUP NUMBER(S)

  9. Herbicide Mode of Action Groups

  10. 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

  11. Future Herbicide Tolerant Crops • Dow Herbicide Tolerant corn & soybean 2,4-D & “fop’s” post grass herbicides • Liberty Link-soybean (Bayer CropSciences) Glyphosate + HPPD Glyphosate + HPPD + LL-soybean

  12. Multiple Resistant Weeds • Smooth PigweedConfirmed • 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 MOA’s] 2002 (IL) • ALS & PPO & Glycines [3 MOA’s] 2005 (MO) • ALS & Glycines 2006 (IL)

  13. 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 * Found in US (Source: Int. Survey of Herbicide Resistant Weeds)

  14. 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

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