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Fungicide Spray Volume and Pruning Impact Performance of a Warning System for Sooty Blotch and Flyspeck on Apple

J. C. Batzer, P. S. McManus, and M. L. Gleason

September 2013


The authors evaluated the effects of spray volume and pruning on the performance of the Brown/Sutton/Hartman SBFS warning system in replicated trials over 4 and 2 years at university research farms in Iowa and Wisconsin, respectively, and also cooperated with commercial apple growers in on-farm demonstration trials in each state. This is the first study to explore the influence of orchard management factors on performance of a SBFS warning system.


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