Fungicide resistance became a priority this past summer with several documented powdery mildew management failures in vineyards. Several new fungicides have been registered for grapes and some of these contain two active ingredients, and many of the new ingredients are at high risk of encouraging the development of resistant fungal pathogens. These new combinations represent a challenge for sustained plant disease management. In this seminar, Dr. Pscheidt discussed ideas on how to best utilize these materials in the upcoming season.
The information provided in the links will be useful for the seminar:
Link to Fungicide Families or Groups in the Pacific Northwest Plant Disease Management Handbook:
http://pnwhandbooks.org/plantdisease/pesticide-articles/fungicide-families-or-groups
Link to the Fruit and Ornamental Disease Management Testing Program website that has much of the data presented (as well as many other trials):
http://www.science.oregonstate.edu/bpp/Plant_Clinic/Fungicidebooklet/2015/index.htm
February 2, 2016