Slide Presentation

TITLE    (click title to view slides)
2020 Wheat County Meeting

AUTHOR
Stanley Culpepper
Professor and Extension Weed Specialist
University of Georgia

DOWNLOAD PRESENTATION    (right click and select 'Save Target As...')
• PowerPoint - 8.5 MB
• PDF - 1.5 MB

TABLE OF CONTENTS
  1. 2020 Wheat County Meeting
  2. Wheat Weed Control
  3. Research in Progress
  4. Wheat Injury From PRE Herbicides. 2019 (significant rainfall after planting)
  5. Weed Control
  6. 2" Radish Response to POST herbicides.
  7. Enlist One - 1 qt/A, XtendiMax - 22 oz//A, Quelex - 1 qt/A
  8. Radish Response to POST herbicides.
  9. Clean at Planting
  10. Controlling Broadleaf Weeds - Radish
  11. MCPA vs 2,4-D
  12. Wild Radish Response to Residual Activity of Wheat Herbicides. 10 DAT
  13. Ryegrass Control
  14. In-Crop Ryegrass Control
  15. Ryegrass Control in Wheat
  16. Proper Timing of POST Materials
  17. ALS resistance - MoA 2, ACCase resistance - MoA 1
  18. Ryegrass planted 0.5 inch with deep turning vs without tillage.
  19. Ryegrass Resistant to ALL POST’S?
  20. Zidua: Effective on Ryegrass
  21. Fierce (Section 24 c GA Label)
  22. Fierce (Section 24 c GA Label) - Application between spike and 2 lf wheat
  23. Ryegrass and Radish
  24. Summary
  25. Clean at Planting
  26. Broadleaf Herbicides Labeled



SLIDE CONTENTS
  1. Treated Untreated Wheat 2019/2020 A. Stanley Culpepper University of Georgia Tifton, GA
  2. Wheat Weed Control 1. New topics: Quelex 2. Broadleaf weed control review 3. Ryegrass weed control review
  3. Research in Progress Preplant application “prior to or shortly after planting” 2-lf to flag leaf 0.75 oz/A + Crop Oil
  4. Wheat Injury From PRE Herbicides. 2019 (significant rainfall after planting) Wheat 3-19. 61 a 29 b XtendiMax 11 oz Quelex 0.75 oz MCPA 16 oz
  5. Label: chickweed, geranium, henbit, horseweed, radish, vetch Research: chickweed, gernanium, henbit, small radish Weed Control
  6. 2” Radish Response to POST herbicides. Wheat 3-19. 50 DAT. 80 b 95 a XtendiMax 11 oz Quelex 0.75 oz MCPA 16 oz
  7. Enlist One – 1 qt/A XtendiMax – 22 oz//A Quelex– 1 qt/A
  8. Radish Response to POST herbicides. Wheat 4-19. 21 DAT. 80 b 90 a XtendiMax 11 oz Quelex 0.75 oz 87 b 61 b 68 b 91 a XtendiMax 11 oz Quelex 0.75 oz Enlist One 16 oz *MCPA = 2,4-D in control Radish 4-8” Radish 18-24”
  9. Clean at Planting 1. Tillage (before emerge) 2. Roundup (before emerge) 3. Gramoxone (before emerge) 4. Harmony Extra (before emerge or in crop) 5. Quelex (before emerge or in crop) 6. Select 30 d plant back 7. 2,4-D: 24 d plant back 8. Valor: 30 d plant back RYEGRASS: Roundup fb Gramoxone
  10. Controlling Broadleaf Weeds - Radish 1. Harmony Extra fb MCPA or 2,4-D 1. Harmony Extra + MCPA or 2,4-D 2. 2,4-D alone 3. Harmony + Quelex 4. Harmony Extra alone Most effective program Least effective program
  11. CROP RESPONSE: MCPA: 2 tiller to full tiller wheat (safer) 2,4-D: full tiller wheat WEED RESPONSE: Similar on small weeds; 2,4-D often better on larger weeds. No difference when mix w Harmony. MCPA provides best residual radish control. MCPA vs 2,4-D
  12. Wild Radish Response to Residual Activity of Wheat Herbicides. 10 DAT Wheat 2-19. 6 c 71 a XtendiMax 11 oz Quelex 0.75 oz MCPA 16 oz
  13. Ryegrass Control 1. A genetic stud– will develop resistance to ALL herbicides quickly. 2. Extremely competitive with grain production.
  14. In-Crop Ryegrass Control Wheat Zidua Fierce Axiom Hoelon Osprey Axial PowerFlex Barley Hoelon Axial Oat Rye Products with the same color error = same MOA
  17. Non-treated PowerFlex 3X rate or Osprey at 3X rate Non-treated Axial XL 2X rate ALS resistance - MoA 2 ACCase resistance – MoA 1
  18. Ryegrass planted 0.5 inch without tillage. Ryegrass planted 0.5 inch followed by deep turning.
  19. Use of residuals (BASF) (Valent - 24 c) Ryegrass Resistant to ALL POST’S?
  20. Delayed PRE: Wheat seed planted at least 0.75” deep 80% of seed germinated with 0.5” shoot 0.75 to 1 oz (sands); 1 to 1.25 oz (med texture) Zidua: Effective on Ryegrass Early POST (spike through 4-tiller): Seed planted at least 0.5” deep 1 to 2 oz/A Can mix with Axial after 2 leaf wheat
  21. Good ryegrass, radish & other broadleaves! Must walk slowly with injury concerns. Fierce (Section 24 c GA Label)
  22. Fierce (Section 24 c GA Label) Application between spike and 2 lf wheat: Seed planted between 1 and 1.5 inch deep Apply at 1.5 oz/A Do not apply on sands!!!! Do not mix with anything but water!!! MUST BE ACTIVATED PRIOR TO WEEDS ½”
  23. Ryegrass and Radish PowerFlex or Osprey + Harmony Extra Axial followed by MCPA + Harmony Extra Fierce
  24. Summary Great options for broadleaves Using same herbicide MOA on a piece of ground guarantees ryegrass resistance in 3 yr Walk slowly with Fierce and zidua
  25. Clean at Planting (wheat, barley, oats, rye, triticale) 1. Tillage (all crops) 2. Roundup (all crops) 3. Gramoxone (wheat, barley) 4. Select 30 d plant back (all crops) 5. 2,4-D: 24 d plant back (all crops) 6. Valor: 30 d plant back (wheat only)
  26. Broadleaf Herbicides Labeled 1. Wheat: Harmony/MCPA/2,4-D/Quelex 2. Barley: Harmony/MCPA/2,4-D/Quelex 3. Oats: Harmony/MCPA/2,4-D 4. Triticale: Harmony/2,4-D/Quelex 5. Rye: 2,4-D/MCPA