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Putting green Anthracnose trials: 2007 Presentation Transcript

  • 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