Creeping Bentgrass Putting Greens:What’s the game plan for 2011?Lane TredwayAssociate Professor and Extension SpecialistDe...
Heat imposed severe stress on creeping bentgrassgreens in 2010.                               30                          ...
Is bentgrass an                       endangered species in                       North Carolina?Agrostis stolonifera
Save the bentgrass!
We’re doing our part at NC State.
Support nematoderesearch at Clemson and       NC State!                          http://sharonapbio-taxonomy.wikispaces.com
Recovery from aerification is driven by fertility.
The diagnosticlab saw some bacteria    in our samples.
Which bacteriadid they see? Is it a     pathogen?                             The diagnostic                        lab sa...
Which bacteria                    did they see? Is it a                         pathogen?                                 ...
Acidovorax sp.Xanthomonas translucensNo suspected pathogens
Identifying the Acidovorax species associated withcreeping bentgrass putting greens.
Identifying the Acidovorax species associated withcreeping bentgrass putting greens.
Identifying the Acidovorax species associated withcreeping bentgrass putting greens.
Bacteria Research Plans for 2011  • closing in on an identification for the Acidovorax    species associated with creeping ...
The problems in 2010 actually started in May.                              7                            5.25Cumulative Rai...
Many fungicide programs are weak against Pythium.   May 13      Headway (1.5 fl oz)   May 27      Concert (4.5 fl oz)   June...
Pythium root rot
Pythium root rot is driven by soil moisture.
Program 13 offers no Pythium root rot protection.          May 22      Tartan (2 fl oz)          June 5      Insignia (0.9 ...
“It can’t be a disease because I’m on Program 13!”
“I sprayed Eagle because I’m on Program X and itwas on the schedule.”
Spray programs are not uncommon in agriculture.flickr:TaminaMiller
Every golf course is different.Climate, microclimate,expectations, andmanagement styles vary.
Art and Science
Where’s the art in this?
Let’s put the art back indisease control!
Program ’11  How to develop and implement a fungicide program.
Program ’11  How to develop and implement a fungicide program.  1. develop list of diseases based on location, cultivar, s...
Program ’11  How to develop and implement a fungicide program.  1. develop list of diseases based on location, cultivar, s...
Program ’11  How to develop and implement a fungicide program.  1. develop list of diseases based on location, cultivar, s...
Program ’11  How to develop and implement a fungicide program.  1. develop list of diseases based on location, cultivar, s...
Program ’11  How to develop and implement a fungicide program.  1. develop list of diseases based on location, cultivar, s...
1. What diseases do you need to control?• ‘A-1’ creeping bentgrass• established in 2005• USGA construction                ...
2. What conditions favor these diseases?Pythium root dysfunction - average daily soil temperaturesbetween 50ºF and 70ºFfai...
3. Determine when disease activity is expected.
3. Determine when disease activity is expected.
Too    many  fungicidesto choose from!                  flickr:kanickmoses
4. Resources for fungicide selection.• product labels• Pest Control for Professional Turf Managers• turf disease profiles (...
4. Resources for fungicide selection.• product labels• Pest Control for Professional Turf Managers• turf disease profiles (...
4. Resources for fungicide selection.• product labels• Pest Control for Professional Turf Managers• turf disease profiles (...
Disease Management Utility                             turffiles.ncsu.edu/diseasemgmt
Disease Management Utility on TurfFiles                                   turffiles.ncsu.edu/diseasemgmt
PRDfairy ringdollar spotalgaebrown patchPRR
PRDfairy ringdollar spotalgaebrown patchPRR
PRD           Segwayfairy ringdollar spotalgaebrown patchPRR
PRD           Segwayfairy ringdollar spotalgaebrown patchPRR           Segway
PRD           Segwayfairy ring             Bayletondollar spotalgaebrown patchPRR           Segway
PRD           Segway         Honorfairy ring             Bayletondollar spotalgaebrown patchPRR           Segway
PRD           Segway         Honorfairy ring             Bayletondollar spot                  Honoralgaebrown patchPRR    ...
PRD           Segway         Honorfairy ring             Bayleton      Torquedollar spot                  Honoralgaebrown ...
PRD           Segway         Honorfairy ring             Bayleton      Torquedollar spot                  Honor   Torqueal...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway         Honor            Signature + Banolfairy ring             Bayleton      Torquedollar spot     ...
PRD           Segway              Honor               Signature + Banolfairy ring               Bayleton            Torque...
Comparing ways to develop and implementfungicide programs       1. Program 13 (Clemson)       2. BASF Program       3. Bay...
Program ’11: How to follow along...
Program ’11: How to follow along...              turfpathology.org
Program ’11: How to follow along...              turfpathology.org              facebook.com/turfpathology
Program ’11: How to follow along...              turfpathology.org              facebook.com/turfpathology              tw...
Program ’11: How to follow along...              turfpathology.org              facebook.com/turfpathology              tw...
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
Creeping Bentgrass Putting Greens: What's the game plan for 2011?
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Creeping Bentgrass Putting Greens: What's the game plan for 2011?

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Lane Tredway
USGA Southeast Regional Conference
Charlotte, NC
March 22, 2011

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Creeping Bentgrass Putting Greens: What's the game plan for 2011?

  1. 1. Creeping Bentgrass Putting Greens:What’s the game plan for 2011?Lane TredwayAssociate Professor and Extension SpecialistDepartment of Plant PathologyNorth Carolina State University
  2. 2. Heat imposed severe stress on creeping bentgrassgreens in 2010. 30 departure from normal HIGH temperature departure from normal LOW temperature 22.5 Departure from Normal (F) 15 7.5 0 -7.5 -15 -22.5 May June July August Sept Oct
  3. 3. Is bentgrass an endangered species in North Carolina?Agrostis stolonifera
  4. 4. Save the bentgrass!
  5. 5. We’re doing our part at NC State.
  6. 6. Support nematoderesearch at Clemson and NC State! http://sharonapbio-taxonomy.wikispaces.com
  7. 7. Recovery from aerification is driven by fertility.
  8. 8. The diagnosticlab saw some bacteria in our samples.
  9. 9. Which bacteriadid they see? Is it a pathogen? The diagnostic lab saw some bacteria in our samples.
  10. 10. Which bacteria did they see? Is it a pathogen? The diagnostic lab saw some bacteria They didn’t say, but in our samples.clearly we have a huge bacteria problem here.
  11. 11. Acidovorax sp.Xanthomonas translucensNo suspected pathogens
  12. 12. Identifying the Acidovorax species associated withcreeping bentgrass putting greens.
  13. 13. Identifying the Acidovorax species associated withcreeping bentgrass putting greens.
  14. 14. Identifying the Acidovorax species associated withcreeping bentgrass putting greens.
  15. 15. Bacteria Research Plans for 2011 • closing in on an identification for the Acidovorax species associated with creeping bentgrasss • inoculations of field plots with Acidovorax and Xanthomonas isolates to determine their pathogenicity • evaluation of antibiotics and other compounds as possible control practices
  16. 16. The problems in 2010 actually started in May. 7 5.25Cumulative Rainfall (in.) 3.5 1.75 0 Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov
  17. 17. Many fungicide programs are weak against Pythium. May 13 Headway (1.5 fl oz) May 27 Concert (4.5 fl oz) June 10 Renown (4.5 fl oz) June 24 Daconil + Fore (3.2 + 4 oz) July 8 Medallion + Concert + Signature (0.25 + 4.5 + 4) July 22 Renown + Fore (4.5 + 4 oz) August 5 Medallion + Concert + Signature (0.25 + 4.5 + 4) August 20 Daconil + Fore (3.2 + 4 oz)
  18. 18. Pythium root rot
  19. 19. Pythium root rot is driven by soil moisture.
  20. 20. Program 13 offers no Pythium root rot protection. May 22 Tartan (2 fl oz) June 5 Insignia (0.9 oz) June 19 Spectro (5.76 oz) July 3 Signature + Daconil (4 + 3.2 oz) July 17 Insignia (0.9 oz) July 31 Signature + Daconil (4 + 3.2 oz) August 14 26GT (4 fl oz) August 28 Tartan (2 fl oz)
  21. 21. “It can’t be a disease because I’m on Program 13!”
  22. 22. “I sprayed Eagle because I’m on Program X and itwas on the schedule.”
  23. 23. Spray programs are not uncommon in agriculture.flickr:TaminaMiller
  24. 24. Every golf course is different.Climate, microclimate,expectations, andmanagement styles vary.
  25. 25. Art and Science
  26. 26. Where’s the art in this?
  27. 27. Let’s put the art back indisease control!
  28. 28. Program ’11 How to develop and implement a fungicide program.
  29. 29. Program ’11 How to develop and implement a fungicide program. 1. develop list of diseases based on location, cultivar, soil type, and history
  30. 30. Program ’11 How to develop and implement a fungicide program. 1. develop list of diseases based on location, cultivar, soil type, and history 2. use historical weather data to determine when each disease is ‘normally’ active
  31. 31. Program ’11 How to develop and implement a fungicide program. 1. develop list of diseases based on location, cultivar, soil type, and history 2. use historical weather data to determine when each disease is ‘normally’ active 3. select product(s) that will control the disease(s) that are expected to be active each week
  32. 32. Program ’11 How to develop and implement a fungicide program. 1. develop list of diseases based on location, cultivar, soil type, and history 2. use historical weather data to determine when each disease is ‘normally’ active 3. select product(s) that will control the disease(s) that are expected to be active each week 4. select rates, intervals, and application method
  33. 33. Program ’11 How to develop and implement a fungicide program. 1. develop list of diseases based on location, cultivar, soil type, and history 2. use historical weather data to determine when each disease is ‘normally’ active 3. select product(s) that will control the disease(s) that are expected to be active each week 4. select rates, intervals, and application method 5. adjust as needed based on actual weather conditions
  34. 34. 1. What diseases do you need to control?• ‘A-1’ creeping bentgrass• established in 2005• USGA construction dollar spot Pythium root rot algae brown patch fairy ring Pythium root dysfunction
  35. 35. 2. What conditions favor these diseases?Pythium root dysfunction - average daily soil temperaturesbetween 50ºF and 70ºFfairy ring - average daily soil temperatures between 55ºF and65ºFdollar spot - low temperatures above 50ºFalgae - high temperatures above 80ºFbrown patch - low temperatures above 60ºFPythium root rot - wet soils
  36. 36. 3. Determine when disease activity is expected.
  37. 37. 3. Determine when disease activity is expected.
  38. 38. Too many fungicidesto choose from! flickr:kanickmoses
  39. 39. 4. Resources for fungicide selection.• product labels• Pest Control for Professional Turf Managers• turf disease profiles (turfpathology.org)• disease management utility (turfpathology.org)• Chemical Control of Turfgrass Diseases (Vincelli)
  40. 40. 4. Resources for fungicide selection.• product labels• Pest Control for Professional Turf Managers• turf disease profiles (turfpathology.org)• disease management utility (turfpathology.org)• Chemical Control of Turfgrass Diseases (Vincelli)
  41. 41. 4. Resources for fungicide selection.• product labels• Pest Control for Professional Turf Managers• turf disease profiles (turfpathology.org)• disease management utility (turfpathology.org)• Chemical Control of Turfgrass Diseases (Vincelli)
  42. 42. Disease Management Utility turffiles.ncsu.edu/diseasemgmt
  43. 43. Disease Management Utility on TurfFiles turffiles.ncsu.edu/diseasemgmt
  44. 44. PRDfairy ringdollar spotalgaebrown patchPRR
  45. 45. PRDfairy ringdollar spotalgaebrown patchPRR
  46. 46. PRD Segwayfairy ringdollar spotalgaebrown patchPRR
  47. 47. PRD Segwayfairy ringdollar spotalgaebrown patchPRR Segway
  48. 48. PRD Segwayfairy ring Bayletondollar spotalgaebrown patchPRR Segway
  49. 49. PRD Segway Honorfairy ring Bayletondollar spotalgaebrown patchPRR Segway
  50. 50. PRD Segway Honorfairy ring Bayletondollar spot Honoralgaebrown patchPRR Segway
  51. 51. PRD Segway Honorfairy ring Bayleton Torquedollar spot Honoralgaebrown patchPRR Segway
  52. 52. PRD Segway Honorfairy ring Bayleton Torquedollar spot Honor Torquealgaebrown patchPRR Segway
  53. 53. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torquealgaebrown patchPRR Segway
  54. 54. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torquealgaebrown patchPRR Segway Signature + Banol
  55. 55. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GTalgaebrown patchPRR Segway Signature + Banol
  56. 56. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GTalgaebrown patch 26GTPRR Segway Signature + Banol
  57. 57. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GTalgae Daconil Ultbrown patch 26GTPRR Segway Signature + Banol
  58. 58. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GT Disarm Calgae Daconil Ultbrown patch 26GTPRR Segway Signature + Banol
  59. 59. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GT Disarm Calgae Daconil Ult Disarm Cbrown patch 26GTPRR Segway Signature + Banol
  60. 60. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GT Disarm Calgae Daconil Ult Disarm Cbrown patch 26GT Disarm CPRR Segway Signature + Banol
  61. 61. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GT Disarm C Honoralgae Daconil Ult Disarm Cbrown patch 26GT Disarm CPRR Segway Signature + Banol
  62. 62. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GT Disarm C Honoralgae Daconil Ult Disarm C Forebrown patch 26GT Disarm CPRR Segway Signature + Banol
  63. 63. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GT Disarm C Honoralgae Daconil Ult Disarm C Forebrown patch 26GT Disarm C HonorPRR Segway Signature + Banol
  64. 64. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GT Disarm C Honoralgae Daconil Ult Disarm C Forebrown patch 26GT Disarm C HonorPRR Segway Signature + Banol Terrazole
  65. 65. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GT Disarm C Honoralgae Daconil Ult Disarm C Forebrown patch 26GT Disarm C HonorPRR Segway Signature + Banol Terrazole Subdue
  66. 66. PRD Segway Honor Signature + Banolfairy ring Bayleton Torquedollar spot Honor Torque 26GT Disarm C Honoralgae Daconil Ult Disarm C Forebrown patch 26GT Disarm C HonorPRR Segway Signature + Banol Terrazole Subdue Segway Bayleton Honor Torque Signature 26GT Terrazole Disarm C Subdue Honor 0.9 fl oz 1 fl oz 1.1 oz 0.6 fl oz 4 oz 4 fl oz 4 fl oz 5 fl oz 1 fl oz 1.1 fl oz water-in water-in water-in water-in foliar foliar water-in foliar water-in foliar Banol Daconil Ult Fore 2 fl oz 3.2 fl oz 6 oz foliar foliar foliar
  67. 67. Comparing ways to develop and implementfungicide programs 1. Program 13 (Clemson) 2. BASF Program 3. Bayer Program 4. Syngenta Program 5. NC State Program 6. Program ’11 - treatments adjusted as needed based on weather conditions
  68. 68. Program ’11: How to follow along...
  69. 69. Program ’11: How to follow along... turfpathology.org
  70. 70. Program ’11: How to follow along... turfpathology.org facebook.com/turfpathology
  71. 71. Program ’11: How to follow along... turfpathology.org facebook.com/turfpathology twitter.com/ncturfpathology
  72. 72. Program ’11: How to follow along... turfpathology.org facebook.com/turfpathology twitter.com/ncturfpathology feeds.feedburner.com/turfpathology

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