Abstract
The strobilurin fungicides Amistar (azoxystrobin) and Flint (trifloxystrobin) were evaluated in 1999/00 and 2000/01 in programs that included various combinations with Thiovit (sulfur) and Topas (penconazole) for the control of powdery mildew on grapes. In most experiments the application of 6 sprays per season that included Thiovit (3 g/L) followed by various combinations of Topas (0.125 mL/L), Amistar (0.5 g/L), Flint (0.15 g/L) and Thiovit (2 g/L) controlled powdery mildew. Although strobilurins were applied from flowering to after fruit set, the order in which various fungicides were applied had little influence on the level of powdery mildew control. In experiments where the bunch or leaf area diseased was 60% or higher in unsprayed plots, the severity was less than 5% where combinations of Thiovit and Topas with either Amistar or Flint were applied. In one experiment, 3 applications of either Legend (quinoxyfen) or Prosper (spiroxamine) following 2 applications of Thiovit also provided excellent control of powdery mildew. In programs where the application of Amistar and Flint were directly compared, Flint was the most effective fungicide for controlling powdery mildew. In the experiments where downy mildew also developed, Amistar was more effective than Flint in controlling this disease.
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Claims 6
Claim · model-written summary
Programs of six sprays per season with Thiovit, Topas, Amistar, Flint and Thiovit controlled powdery mildew in most experiments.
- Taxon
- grapese0
- Treatment
- 6 sprays per season that included Thiovit (3 g/L) followed by various combinations of Topas (0.125 mL/L), Amistar (0.5 g/L), Flint (0.15 g/L) and Thiovit (2 g/L)e1
- Interactor
- powdery mildewe1pathogen
- Outcome
- powdery mildewe1
Not reportedComparatorDirection
Verbatim
e0“for the control of powdery mildew on grapes”
e1“In most experiments the application of 6 sprays per season that included Thiovit (3 g/L) followed by various combinations of Topas (0.125 mL/L), Amistar (0.5 g/L), Flint (0.15 g/L) and Thiovit (2 g/L) controlled powdery mildew”
Claim · model-written summary
The order in which the fungicides were applied had little influence on the level of powdery mildew control.
- Taxon
- grapese0
- Treatment
- order in which various fungicides were appliede2
- Interactor
- powdery mildewe2pathogen
- Outcome
- level of powdery mildew controle2
Not reportedComparatorDirection
Verbatim
e0“for the control of powdery mildew on grapes”
e2“Although strobilurins were applied from flowering to after fruit set, the order in which various fungicides were applied had little influence on the level of powdery mildew control”
Claim · model-written summary
Where unsprayed plots had 60% or higher bunch or leaf area diseased, combinations of Thiovit and Topas with Amistar or Flint kept severity below 5%.
Verbatim
e0“for the control of powdery mildew on grapes”
e3“In experiments where the bunch or leaf area diseased was 60% or higher in unsprayed plots, the severity was less than 5% where combinations of Thiovit and Topas with either Amistar or Flint were applied”
Claim · model-written summary
Three applications of Legend or Prosper after two applications of Thiovit gave excellent control of powdery mildew in one experiment.
- Taxon
- grapese0
- Treatment
- 3 applications of either Legend (quinoxyfen) or Prosper (spiroxamine) following 2 applications of Thiovite4
- Interactor
- powdery mildewe4pathogen
- Outcome
- control of powdery mildewe4
- Qualifier
- excellent controle4
Not reportedComparatorDirection
Verbatim
e0“for the control of powdery mildew on grapes”
e4“In one experiment, 3 applications of either Legend (quinoxyfen) or Prosper (spiroxamine) following 2 applications of Thiovit also provided excellent control of powdery mildew”
Claim · model-written summary
Flint was the most effective fungicide for controlling powdery mildew when compared directly with Amistar.
Verbatim
e0“for the control of powdery mildew on grapes”
e5“In programs where the application of Amistar and Flint were directly compared, Flint was the most effective fungicide for controlling powdery mildew”
Claim · model-written summary
Amistar was more effective than Flint in controlling downy mildew in experiments where downy mildew also developed.
Verbatim
e0“for the control of powdery mildew on grapes”
e6“In the experiments where downy mildew also developed, Amistar was more effective than Flint in controlling this disease”
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