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- Open AccessRelease of Erysiphe necator Ascospores and Impact of Early Season Disease Pressure on Vitis vinifera Fruit InfectionMichelle M. Moyer, David M. Gadoury, Wayne F. Wilcox, Robert C. SeemAm J Enol Vitic. 2014 65: 315-324 ; DOI: 10.5344/ajev.2014.13111Michelle M. Moyer1Assistant Professor, Department of Horticulture, Washington State University, Irrigated Agriculture Research and Extension Center, Prosser, WA 99350 and, formerly, Graduate Research Assistant, Division of Plant Pathology and Plant-Microbe Biology, Cornell University, New York State Agricultural Experiment Station, Geneva, NY 14456David M. Gadoury2Senior Research Associate, Division of Plant Pathology and Plant-Microbe Biology, Cornell University, New York State Agricultural Experiment Station, Geneva, NY 14456Wayne F. Wilcox3Professor, Division of Plant Pathology and Plant-Microbe Biology, Cornell University, New York State Agricultural Experiment Station, Geneva, NY 14456Robert C. Seem3Professor, Division of Plant Pathology and Plant-Microbe Biology, Cornell University, New York State Agricultural Experiment Station, Geneva, NY 14456