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Forecasts of Grape Downy Mildew for New York and Pennsylvania Regional IPM Programs 1997

Project Leaders: David Gadoury, Robert Seem, Wayne Wilcox


1. Simplify DMCAST for use in the VITIS expert system and a regional IPM program

2. Evaluate the efficacy, practicality, and economy of using DMCAST forecasts of infection in control decisions for downy mildew, powdery mildew, and black rot.


DMCAST warnings of secondary infection timed fungicide applications for effective control with a reduced number of sprays. This package can now be made available as part of the VITIS expert system and as on on-line service for New York and Pennsylvania grape growers.