Scab Management 4/27-29

April 27, 2014-

Anyone who had exposed green tissue on apples yesterday likely saw an apple scab infection period. This is also looking like a cool and wet week ahead, so more infection periods are likely. It looks like the best window for spray applications with low winds will be tonight, April 27, from dusk through early tomorrow morning, and possibly another similar window extending from tomorrow night through Tuesday morning, April 29. If there is any question about spray coverage in your orchard during the past infection period from April 26-27, consider adding a kick-back material to your protectant to improve disease control.

I’ll be out bright and early tomorrow applying mancozeb+Vangard in IPMN blocks and sulfur in our organic blocks.

Terence Bradshaw, UVM Tree Fruit and Viticulture Specialist

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The UVM Tree Fruit and Viticulture Program is supported by the University of Vermont Agriculture Experiment Station, a USDA NIFA E-IPM Grant, and USDA Risk Management Agency Funds.