1. Putting green Anthracnose trials: 2007
Brian McDonald & Tom Cook
Oregon State University
October 30, 2007

2. Trial site:
Emerald Valley Golf Club, Cresswell, OR
Site has history of severe Anthracnose
Thanks to Scott Larsen for letting us use his practice green

3. Trial # 1: Product evaluation trial
Product oz/1000 Frequency
Check na 3 wks
Banner Maxx 0.5
Banner Maxx 1.0
Banner Maxx 1.5
Instrata 4.5
Instrata 6.0
Triton 1.0
Lynx 1.5
Lynx 2.0
Signature + Daconil 4.0+3.2
Signature + Lynx 4.0+1.0
Lynx rotation with Sig + Dac 1.5 / 4+3.2
Lynx June-July, Sig + Dac Aug, Lynx Sept 1.5 / 4+3.2 / 1.5

4. Trial # 1: Quality Ratings 1-9
Product oz/1000/ 3 wk 8/8 8/29 9/18 10/1
Check na 4.3 3.2 2.3 2.3
Banner Maxx 0.5 5.7 4.5 3.7 3.5
Banner Maxx 1.0 5.3 4.5 4.5 4.5
Banner Maxx 1.5 5.7 5.0 3.7 3.7
Concert 6.0 7.3 6.3 5.7 5.5
Instrata 4.5 7.3 7.0 6.2 5.8
Instrata 6.0 7.3 8.0 6.8 6.7
Triton 1.0 6.7 6.5 7.0 6.2
Lynx 1.5 7.0 7.8 7.5 7.5
Lynx 2.0 7.3 8.3 7.8 8.0
Signature + Daconil 4.0+3.2 5.7 4.7 4.2 4.2
Signature + Lynx 4.0+1.0 6.3 7.2 7.3 7.3
Lynx rot. Sig + Dac 1.5 / 4+3.2 7.3 8.0 7.7 8.0
Lynx, Sig + Dac, Lynx 1.5 / 4+3.2 / 1.5 7.7 7.3 6.8 6.8
LSD @ 0.05

5. Lynx impact on turf quality

6. Disease Ratings (% diseased area)
Product oz/1000/ 3 wk 8/8 8/29 9/18 10/1
Check na 9.3 25.0 38.3 41.7
Banner Maxx 0.5 1.3 10.0 15.0 23.3
Banner Maxx 1.0 1.9 11.0 11.3 16.0
Banner Maxx 1.5 2.4 11.8 17.0 18.3
Concert 6.0 0.3 1.9 2.7 6.3
Instrata 4.5 0.3 1.0 1.4 2.2
Instrata 6.0 0.3 0.2 0.7 1.2
Trinity 1.0 0.7 0.7 0.7 1.0
Lynx 1.5 0.0 0.0 0.0 0.0
Lynx 2.0 0.0 0.0 0.0 0.0
Signature + Daconil 4.0+3.2 1.8 5.7 7.3 10.7
Signature + Lynx 4.0+1.0 0.2 0.2 0.2 0.1
Lynx rot. Sig + Dac 1.5 / 4+3.2 0.0 0.0 0.0 0.0
Lynx, Sig + Dac, Lynx 1.5 / 4+3.2 / 1.5 0.0 0.1 1.2 0.4
LSD @ 0.05 2.7 3.7 4.9 5.6

7. Trial # 1: Disease Ratings
Top Performers
Lynx 1.5oz & 2oz
Signature + Lynx 4+1
Lynx/ Sig + Dac. rot. 1.5 / 4+3.2
Lynx/Sig+Dac/Lynx 1.5/4+3.2/1.5
Instrata 4.5 & 6.0 oz
Trinity 1.0 oz

8. Anthracnose damage in
untreated check plots
2007 product evaluation trial

9. Product Evaluation Trial # 1 General Results:
1.Lynx alone, in combination, or alternated in
rotation was best performer
2.Lynx enhanced turf quality at all rates
3.Instrata and Trinity were statistically equal
to Lynx, but had more disease
4.Banner Maxx rates were too low to
be effective

10. Rotations and Timing Effects on Disease Control
Early Start:
Rotation 1: 3 applications - June 26,July 18, Aug. 8
Rotation 2: 4 applications - June 26,July 18, Aug. 8, Aug. 29
Rotation 3: 5 applications - June 26,July 18, Aug. 8, Aug. 29, Sept 19
Late Start:
Rotation 4: 3 applications - July 18, Aug. 8, Aug. 29
Rotation 5: 4 applications - July 18, Aug. 8, Aug. 29, Sept 19
Rotation 6: 4 applications - July 18, Aug. 8, Aug. 29, Sept 19

11. Rotations and Timing Effects on Disease Control
Late Start: Rotation #4
July 18: Lynx 1.5 oz. + Daconil Ultrex 3.2 oz
Aug. 8: Medallion 0.5 + Daconil Ultrex 3.2 oz.
Aug. 29: Banner Maxx 1.5 + Daconil Ultrex 3.2 oz.
Late Start: Rotation #5
July 18: Lynx 1.5 oz. + Daconil Ultrex 3.2 oz
Aug. 8: Medallion 0.5 + Daconil Ultrex 3.2 oz.
Aug. 29: Banner Maxx 1.5 + Daconil Ultrex 3.2 oz
Sept. 19: Medallion 0.5 + Daconil Ultrex 3.2 oz.
Late Start: Rotation #6
July 18: Lynx 1.5 oz. + Daconil Ultrex 3.2 oz
Aug. 8: Signature 4.0 + Daconil Ultrex 3.2 oz.
Aug. 29: Medallion 0.5 + Daconil Ultrex 3.2 oz.
Sept. 19: Banner Maxx 1.5 + Daconil Ultrex 3.2 oz

12. Trial #2: Rotations and Timing Disease Ratings
% Area diseased 8/29 9/18 10/1
Early Start:
Rotation 1: 3 appls. 0.0 0.1 0.0
Rotation 2: 4 appls. 0.0 0.1 0.1
Rotation 3: 5 appls. 0.2 0.1 0.4
Late Start:
Rotation 4: 3 appls. 1.1 0.3 2.7
Rotation 5: 4 appls. 0.8 0.6 1.4
Rotation 6: 4 appls. 1.7 0.9 1.2
Untreated Check 18.3 33.3 38.3
LSD @ .05 2.5 1.9 2.2

13. Rotations and Timing Effects on Disease Control
Early Start: Rotation #1
June 26: Lynx 1.5 oz. + Daconil Ultrex 3.2 oz
July 18 : Medallion 0.5 + Daconil Ultrex 3.2 oz.
Aug. 8 : Banner Maxx 1.5 + Daconil Ultrex 3.2 oz.
% Diseased area
8/29 9/18 10/1
0.0 0.1 0.0

14. Rotations and Timing Effects on Disease Control
Early Start: Rotation #2
June 26: Lynx 1.5 oz. + Daconil Ultrex 3.2 oz
July 18 : Medallion 0.5 + Daconil Ultrex 3.2 oz.
Aug. 8 : Banner Maxx 1.5 + Daconil Ultrex 3.2 oz
Aug. 29: Medallion 0.5 + Daconil Ultrex 3.2 oz.
% Diseased area
8/29 9/18 10/1
0.0 0.0 0.1

15. Rotations and Timing Effects on Disease Control
Early Start: Rotation #3
June 26: Lynx 1.5 oz. + Daconil Ultrex 3.2 oz
July 18 : Medallion 0.5 + Daconil Ultrex 3.2 oz.
Aug. 8 : Medallion 0.5 + Daconil Ultrex 3.2 oz.
Aug. 29: Banner Maxx 1.5 + Daconil Ultrex 3.2 oz
Sept. 19: Medallion 0.5 + Daconil Ultrex 3.2 oz.
% Diseased area
8/29 9/18 10/1
0.2 0.1 0.4

16. Trial # 2: Rotation Programs General Results:
1.All early start rotations provided acceptable
control.
2.Three applications were as good as four in
the early start rotations.
3. Late start rotations were not acceptable
even though % disease was low.

17. Thanks to:
Bayer Environmental Sciences
Syngenta Crop Protection
BASF The Chemical Company
For financial support for these trials