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Visiting Scholar from the State Research Center for Horticulture, Blan-gestedgaard, Odense, Denmark; currently at the Department of Horticulture, Royal Veterinary and Agricultural University, Copenhagen.
Professor of Pomology, Extension Pomologist, and Farm Advisor, respectively. We are grateful to the Prune Advisory Board of California and the Danish State Research Council of Agriculture for financial support and the grant to the senior author. We also thank Omund Lilleland for his guidance and assistance.