Date of Award:
5-1965
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Plants, Soils, and Climate
Department name when degree awarded
Plant Pathology
Committee Chair(s)
O. S. Cannon
Committee
O. S. Cannon
Committee
R. S. Peterson
Committee
W. S. Boyle
Abstract
Speckled tar spot caused by Rhytisma punctatum (Persoon) Fries is often found on maples in many parts of the world (Holden, 1961; Koval', 1960; Saccardo, 1889). In Northern Utah it develops every year on leaves of Acer grandidentatum Nutt., and it is especially abundant at elevations above 6,000 feet, where often it is difficult to find even one uninfected leaf. The black speckled spots and the associated leaf coloring tend to add to the brilliance of the autumn colors normally found in the leaves of Bigtooth Maple.
Checksum
069bd2a932bcb1ccdbe98e59d121c8b4
Recommended Citation
Chen, Ching-fei, "A Study of the Development of the Sexual Stage of Rhytisma punctatum (Pers.) Fries" (1965). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 9051.
https://digitalcommons.usu.edu/etd/9051
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