Stem Rust of Wheat: An Oklahoma Perspective. B. Hunger, B. Tipton, J. Edwards, A. Klatt, and B. Carver Oklahoma State University. Wheat Leaf Rust ( Puccinia triticina ). Wheat Stripe Rust ( Puccinia striiformis f. sp. tritici ). Lahoma, OK; Apr, 2005. Lahoma, OK; Apr, 2005.
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B. Hunger, B. Tipton, J. Edwards, A. Klatt, and B. Carver
Oklahoma State University
Lahoma, OK; Apr, 2005
Lahoma, OK; Apr, 2005
Apache, OK; Mar, 2005
Lahoma; mid 1980s
Photo above courtesy of Cereal Disease Lab, St. Paul, MN
Data from Cereal Disease Lab, St. Paul, MN
Since 1918 in the Great Plains
(Source: Cereal Disease Lab, St. Paul, MN)
Only minimal losses since the mid-1960s
Data and slide courtesy of Cereal Disease Lab, St. Paul, MN
2007 – Brad Tipton – Extension Educator, Canadian County
Burleigh, Schulze, and Eversmeyer. 1969. Some aspects of the summer & winter ecology of wheat rust fungi. Plant Dis. Rep. 53:648-651
Figure 1. Darkened area indicates where samples were taken during the 4-year study.
Chester, Ray, McLaughlin, and Hoffmaster. 1945. Diseases of field crops in Oklahoma. OAES Circular C-119, 23 pp.
Chester, K. S. 1942. The Nature and Prevention of Plant Diseases. The Blakiston Company, Philadelphia, 584 pp.
►PGT lives through the winter on wheat & produces uredospores in southern TX & Old Mexico; spring infections result from uredospores from the winter infections; teliospores are functionless.
►Stem rust in northern TX, OK, and southern KS is caused by uredospores blown in by south winds from southern TX and Old Mexico; teliospores are functionless.
►From northern KS to Canada, aeciospores from barberry and uredospores blown up from the south serve as inoculum; also teliospores may overwinter and lead to stem rust.
►In the southern Great Plains, varieties such as Early Blackhull escape stem rust because of their earliness.
common barberry. USDA, Bureau of
Entomology and Plant Quarantine,
Division of Plant Disease Control.
Entomology and Plant Quarantine, Division of Plant Disease Control.