Pierce's disease investigations

This special report covers the investigations on Pierce’s disease that were supported in part by special appropriation of the 1943 State Legislature, which made the work on the Woodlake and Lindsay plots possible, and by a special grant from University funds. The studies were a coöperative undertaking of the divisions of Entomology and Parasitology, Plant Pathology, and Viticulture. Contributing authors of this publication are: Wm. B. Hewitt, Associate Professor of Plant Pathology and Associate Plant Pathologist in the Experiment Station, who was responsible for the pathological investigations; N. W. Frazier, Lecturer in Entomology and Assistant Entomologist in the Experiment Station, who contributed the material on the vectors and their control; J. H. Freitag, Associate Professor of Entomology and Associate Entomologist in the Experiment Station, who did the work on the host range of the virus; and A. J. Winkler, Professor of Viticulture and Viticulturist in the Experiment Station, who edited the contributions and supplied the viticultural aspects. Many grape growers gave generous assistance during the course of this investigation, particularly those who actively cooperated in the plot work; and by Professor E. O. Essig, Chairman of the Division of Entomology and Parasitology and Professor Max W. Gardner, Chairman of the Division of Plant Pathology.