Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 58 (1951) > Annual Issue
Document Type
Research
Abstract
Sycamore anthracnose, Gnomonia veneta, (Sacc. & Speg.) Klebahn (4), prevalent in Iowa (1), belongs to a group of plant diseases with life cycle patterns which suggest the use of fungicidal sprays for their control. In early spring this disease appears as a blight on the young leaves soon after they emerge from the bud (Fig. 1). The blighted leaves become brown to black and frequently appear as if they had been injured by frost. Mature leaf infection characteristically produces elongate brown streaks along the midveins and laterals (Fig. 2), and many such infected leaves fall within two or three weeks. In addition to defoliation, sycamores undergo extensive twig blight. The death of terminal buds stimulates the development of numerous lateral branches which later may also be destroyed. This results in dead clusters of branches, "witches' broom", around a swollen terminal area (Fig. 3).
Publication Date
1951
Journal Title
Proceedings of the Iowa Academy of Science
Volume
58
Issue
1
First Page
209
Last Page
214
Copyright
©1951 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Schuldt, Paul H.
(1951)
"Sprays for Control of Sycamore Anthracnose,"
Proceedings of the Iowa Academy of Science, 58(1), 209-214.
Available at:
https://scholarworks.uni.edu/pias/vol58/iss1/21