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“New” Turfgrass Herbicides 2004-2005

“New” Turfgrass Herbicides 2004-2005. Tim R. Murphy The University of Georgia. “Newer” Herbicides. TranXit - SU Revolver - SU Monument – SU Velocity – Not an SU, but similar MOA Certainty – SU Katana - SU. “Newer” Herbicides. QuickSilver Speed Zone Broadleaf Speed Zone - Southern

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“New” Turfgrass Herbicides 2004-2005

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  1. “New” Turfgrass Herbicides2004-2005 Tim R. Murphy The University of Georgia

  2. “Newer” Herbicides • TranXit - SU • Revolver - SU • Monument – SU • Velocity – Not an SU, but similar MOA • Certainty – SU • Katana - SU

  3. “Newer” Herbicides • QuickSilver • Speed Zone Broadleaf • Speed Zone - Southern • Power Zone Broadleaf • Spotlight

  4. TranXit • Poa control before overseeding (includes greens) • DNAs, Dimension, Kerb, Rubigan • Poa control in non-overseeded bermuda, centipede and zoysia • Triazines, Kerb, Diquat, Revolver, Monument, Katana • Spring transition aid in overseeded bermuda • Manor, Revolver, Monument, Kerb, Katana • NON-RESIDENTIAL USE ONLY

  5. annual bluegrass ryegrass spp. little barley tall fescue blue-eyedgrass rough bluegrass common chickweed shepherd’s-purse henbit field pansy cutleaf eveningprimrose spotted spurge pennywort (dollarweed) Weeds Controlled by TranXit

  6. TranXit • Rimsulfuron 25DF • Sulfonylurea • 2.0 to 4.0 ozs. product/acre • Chemically degraded, more rapid under alkaline or acid conditions • T1/2 in soil is 1.7 to 4.3 days

  7. Georgia Experiments - Griffin • ‘Tifway’ bermudagrass, 0.75 in. ht. • Overseeded Oct. 17, 2000 • ‘TourStar’ perennial ryegrass blend • Irrigated site • 25 gpa

  8. Herbicide Rates • TranXit – 1, 2, 4 and 8 oz./acre • Dimension 1EC – 2.0 qts./acre • Barricade 65DG – 0.75 lbs./acre • Balan 2.5G – 80 lbs./acre

  9. Perennial ryegrass density. * * *

  10. Poa annua control. * * *

  11. Poa Control in Bermudagrass • Non-overseeded ‘Tifway’ • Single or repeat applications of rimsulfuron • 2 and 4 oz./acre + NIS • March 14 • Tifway – 15% green-up, Poa annua – seedheads • March 27 • Tifway – 20% green-up, Poa annua – seedheads

  12. Poa annua control. *

  13. Untreated Check 57 DAA

  14. 57 DAA TranXit 2.0 ozs.

  15. 57 DAA TranXit 2.0 fb. 2.0 ozs.

  16. New Poa annua Options in Overseeded Bermudagrass • TranXit – rimsulfuron, • t1/2 = 1.7 to 3.4 days • Revolver – foramsulfuron, • t1/2 = 1 to 12 days • Persistence is less in acid than alkaline soils

  17. Revolver – Bayer Environ. Sciences • Foramsulfuron - 0.19SC, POST • First liquid sulfonylurea, no NIS required • 4.4 to 26.2 fl. ozs. product/acre (use high rate for centipede suppression and goosegrass) • t1/2 in soil is 1 to 12 days • Chemically degraded, more rapid under alkaline or acid conditions

  18. Revolver • Poa control before overseeding (includes greens) [2 WBS] • DNAs, Dimension, Kerb, Rubigan, TranXit • Poa control in non-overseeded bermuda and ‘Meyer’ zoysia • Triazines, Kerb, Diquat, Monument, Katana • Spring transition aid in overseeded bermuda • Manor, TranXit, Monument, Kerb, Katana

  19. annual bluegrass ryegrass spp. little barley tall fescue rough bluegrass bentgrass henbit bentgrass Goosegrass Doveweed???? Weeds Controlled by Revolver

  20. Goosegrass Control - Griffin • ‘Tifway’ bermudagrass, 0.75 in. ht. • Irrigated site • 25 gpa • Revolver: 17.4, 26.2 fl. ozs./ac • MSMA + Sencor: 2.7 pts. + 2.7 ozs./ac • Illoxan: 1.4 qts./ac • Applied 6-12 and 6-19, 2002 • 2 to 3 tiller goosegrass

  21. Goosegrass control with Revolver. 2002.

  22. Poa annua Control - Griffin • ‘Tifway’ bermudagrass, 0.625 in. ht. • Irrigated site • 25 gpa • Revolver: 8.8, 17.4 fl. ozs./ac – appl. 2 or 1 WBS • TranXit: 2.0 oz./ac – appl. 2 WBS • “Sunrise Primo’ seeded 11-01-2002

  23. Effect of Revolver on Ryegrass Establishment. 2002/3.

  24. Effect of Revolver on Poa annua control. 2002/3.

  25. Monument– Syngenta • Trifloxysulfuron-sodium 75 WDG, POST • 0.1 to 0.56 ozs. product/acre • t-1/2 in soil is 5 to 15 days • Chemically degraded, more rapid under alkaline or acid conditions • Add NIS at 0.25% v/v

  26. Monument • Poa control in non-overseeded bermuda and zoysia • Triazines, Kerb, Diquat, Revolver, TranXit • Spring transition aid in overseeded bermuda • Manor, TranXit, Monument, Kerb, Embark, Revolver • Broadleaf weed and sedge control (winter and summer) • NON-RESIDENTIAL USE ONLY

  27. annual bluegrass ryegrass spp. little barley rough bluegrass torpedograss tall fescue henbit dichondra Va. Buttonweed nutsedge (yellow and purple) green kyllinga carpetweed spotted spurge Weeds Controlled by Monument

  28. Monument – One Appl. (5/16/01)

  29. Monument – Two Appl. (5/16 + 6/14/01)

  30. MONUMENT – One Appl. (5/16/01) MON 0.1 MON 0.3 Kerb 1.5 UTC

  31. Monument – Two Appl. (5/16 + 6/14/01) MON 0.1 MON 0.3 TranXit 2 UTC

  32. Other Herbicides in Development • Flazasulfuron (Katana) -ISK BioSciences • Sulfonylurea • Sulfosulfuron (Certainty) – Monsanto • Sulfonylurea

  33. Flazasulfuron (Katana) - ISK BioSciences • Bermuda, zoysia • St. Augustine, centipede and cool-seasons not tolerant • Spring transition aid, seedling crabgrass (<4-lf), nutsedge and kyllinga, numerous broadleaf weeds

  34. Sulfosulfuron (Certainty)- Monsanto • Bermuda (most tolerant), St. Augustine, centipede, zoysia • Cool-season tolerance is low and highly rate dependent • Spring transition aid, nutsedges, kyllinga

  35. Velocity - Valent • bispyribac-sodium • Use rates – 1.3 to 2.6 oz.product/ac • inhibits ALS, no synthesis of branched chain amino acids • not a sulfonylurea, but slow acting • root and shoot absorbed, ½ life < 10 d

  36. Velocity Projects • GA Station • Perennial ryegrass – ‘Sunrise Primo’ • ‘Tifway’ bermudagrass • 0.625 in. clip height • Irrigated site

  37. Velocity– Perennial Ryegrass Injury Applied 4 wks after seeding, 3-lf ryegrass

  38. Velocity– Annual Bluegrass Control Applied 4 wks after seeding, Oct. 23, 2001

  39. Velocity– Perennial Ryegrass Injury Applied 18 wks after seeding, Feb. 8, 2002

  40. Velocity– Annual Bluegrass Control Applied 18 wks after seeding, Feb. 8, 2002

  41. Velocity– Perennial Ryegrass Injury Applied 17 and 20 wks after seeding, Mar. 7 & Apr. 1, 2002

  42. Velocity– Annual Bluegrass Control Applied 17 and 20 wks after seeding, Mar. 7 & Apr. 1, 2002

  43. Velocity, 1.3 fb 1.3 oz/ac 3/03 + 3/21 2/18 + 3/03 Turf17-03: Photo April 9, 2003, NIS left, MSO right

  44. Fluroxypyr (Spotlight) - DowAgroSciences • Cool-season tolerance is good • Warm-season tolerance is low and highly rate dependent • Will see as an ingredient in other 2- and 3-way broadleaf control herbicides • Ex. NuFarm Escalade (2,4-D + fluroxypyr + dicamba)

  45. Carfentrazone – QuickSilver - FMC • Triazolinone family • Post, contact activity, cell membrane disrupter • Rapidly absorbed, only limited translocation • No soil activity • t 1/2 - 2.5 to 4 d • non-mobile • Negligible volatility

  46. Why add carfentrazone? • Tank-mix with 2,4-D, 2,4-DP, dicamba, MCPP, MCPA, atrazine, glufosinate, glyphosate • Better activity in cool weather • Faster development of control symptoms • hours vs. days • complete control in 7 to 14 days • Better activity on spurges

  47. New PBI Gordon Broadleaf Herbicides aEster

  48. White Clover Control – Griffin - 2001

  49. Tall Fescue Injury – Griffin - 2001

  50. Common Bermuda Injury – Griffin - 2001

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