Stripe Rust, Late Freeze W
MISSISSIPPI STATE, MISS.
heat stripe rust was spotted in Mississippi and Arkansas in January, an unusual occurrence this early in the year made possible by the
warm and wet winter. These occurrences are the first reports of the disease
east of the Rockies this year. Tom Allen, Mississippi State University Extension
plant pathologist at the Delta Research and Extension Center in Stoneville, said the rust was spotted Jan. 27 in Arkansas and is more widespread there than in Mis- sissippi. On Jan. 30, a consultant spotted the first wheat stripe rust in Mississippi in Bolivar County, and on Feb. 6 a second field of infected wheat was identified in Sunflower County. “The field in Bolivar County has infected plants in a
localized area along the southern edge of the field, so the affected area was quite small,” said Allen, who also conducts research for the Mississippi Agricultural and Forestry Experiment Station. “The field in Sunflower County has much larger areas of affected plants. Stripe rust development is typically favored by temperatures between 50 and 65 degrees Fahrenheit, heavy dews and
This wheat leaf is infected with stripe rust, an unusual occurrence this early in the growing season. Wheat stripe rust has been spotted in Mississippi and Arkansas. Photo by MSU Extension Service/Tom Allen
intermittent
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