Research, unpublished papers, slides, and subject
files related to Cooperative Extension Specialist James A. (Jim) Wolpert's work on wine grape rootstocks.
Dr. James A. (Jim) Wolpert (1951-2018) was a Cooperative Extension Specialist in Viticulture with a focus on rootstock
evaluation, particularly of Zinfandel varieties. He was chair of the Department of Viticulture and Enology from
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