Program '11: The Best Fungicide Program for YOUR Putting Greens
1. Program ’11: The best fungicide program
for YOUR putting greens
Lane Tredway
Associate Professor and Extension Specialist
Department of Plant Pathology
North Carolina State University
2. Heat imposed severe stress on creeping bentgrass
greens 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
6. Which bacteria
did they see? Is it a
pathogen?
The diagnostic
lab saw some bacteria
in our samples.
7. 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.
10. 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
11. The problems in 2010 actually started in May.
7
Cumulative Rainfall (in.)
5.25
3.5
1.75
0
Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov
25. Program ’11
How to develop and implement a fungicide program.
26. Program ’11
How to develop and implement a fungicide program.
1. develop list of diseases based on location, cultivar, soil
type, and history
27. 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
28. 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
29. 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
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
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
31.
32. 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
33. 2. What conditions favor these diseases?
Pythium root dysfunction - average daily soil temperatures
between 50ºF and 70ºF
fairy ring - average daily soil temperatures between 55ºF and
65ºF
dollar spot - low temperatures above 50ºF
algae - high temperatures above 80ºF
brown patch - low temperatures above 60ºF
Pythium root rot - wet soils
37. Too
many
fungicides
to choose from!
flickr:kanickmoses
38. 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)
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. 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)
45. PRD Segway
fairy ring
dollar spot
algae
brown patch
PRR
46. PRD Segway
fairy ring
dollar spot
algae
brown patch
PRR Segway
47. PRD Segway
fairy ring Bayleton
dollar spot
algae
brown patch
PRR Segway
48. PRD Segway Honor
fairy ring Bayleton
dollar spot
algae
brown patch
PRR Segway
49. PRD Segway Honor
fairy ring Bayleton
dollar spot Honor
algae
brown patch
PRR Segway
50. PRD Segway Honor
fairy ring Bayleton Torque
dollar spot Honor
algae
brown patch
PRR Segway
51. PRD Segway Honor
fairy ring Bayleton Torque
dollar spot Honor Torque
algae
brown patch
PRR Segway
52. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque
algae
brown patch
PRR Segway
53. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque
algae
brown patch
PRR Segway Signature + Banol
54. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT
algae
brown patch
PRR Segway Signature + Banol
55. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT
algae
brown patch 26GT
PRR Segway Signature + Banol
56. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT
algae Daconil Ult
brown patch 26GT
PRR Segway Signature + Banol
57. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT Disarm C
algae Daconil Ult
brown patch 26GT
PRR Segway Signature + Banol
58. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT Disarm C
algae Daconil Ult Disarm C
brown patch 26GT
PRR Segway Signature + Banol
59. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT Disarm C
algae Daconil Ult Disarm C
brown patch 26GT Disarm C
PRR Segway Signature + Banol
60. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT Disarm C Honor
algae Daconil Ult Disarm C
brown patch 26GT Disarm C
PRR Segway Signature + Banol
61. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT Disarm C Honor
algae Daconil Ult Disarm C Fore
brown patch 26GT Disarm C
PRR Segway Signature + Banol
62. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT Disarm C Honor
algae Daconil Ult Disarm C Fore
brown patch 26GT Disarm C Honor
PRR Segway Signature + Banol
63. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT Disarm C Honor
algae Daconil Ult Disarm C Fore
brown patch 26GT Disarm C Honor
PRR Segway Signature + Banol Terrazole
64. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT Disarm C Honor
algae Daconil Ult Disarm C Fore
brown patch 26GT Disarm C Honor
PRR Segway Signature + Banol Terrazole Subdue
65. PRD Segway Honor Signature + Banol
fairy ring Bayleton Torque
dollar spot Honor Torque 26GT Disarm C Honor
algae Daconil Ult Disarm C Fore
brown patch 26GT Disarm C Honor
PRR 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
66. Program Infinity (March - June)
Date Product(s)
March 13 Segway (0.9 fl oz)
April 3 Bayleton (1 fl oz)
April 10 Honor (1.1 fl oz)
May 1 Torque (0.6 fl oz)
May 8 Signature + Banol (4 +2 oz)
May 22 Daconil + 26GT (6 + 4 oz)
May 29 Terrazole (4 oz)
June 5 Disarm C (5 fl oz)
June 12 Subdue Maxx (1 fl oz)
June 19 Fore + Honor (6 + 1.1 oz)
67. Comparing ways to develop and implement
fungicide programs
1. Program 13 (Clemson)
2. BASF Program
3. Bayer Program
4. Syngenta Program
5. Program Infinity
6. Program ’11 - treatments adjusted as
needed based on weather conditions