Agricultural News
Wheat Diseases Absent in Oklahoma, Coming on Strong in Texas
Wed, 13 Feb 2013 10:47:50 CST
Bob Hunger, Extension Wheat Pathologist with the Department of Entomology & Plant Pathology at Oklahoma State University makes his first report of the season:
There have been no reports of any foliar diseases in Oklahoma and no wheat samples have come to the diagnostic lab since last fall. The samples that came in last fall were diagnosed as having common root and/or problems associated with drought and drying soils after emergence. Dr. Art Klatt reported observing symptoms of wheat soilborne mosaic and/or wheat spindle streak mosaic in our virus screening nursery, which is typical for this time of year.
Dr. Amir Ibrahim, Professor of Small Grains Breeding and Genetics at Texas A&M University reports: "Leaf and stripe rusts might be off to an early start in South Texas. Heavy leaf rust, as high as 80S, was seen in a fungicide trial in Pearsall, Texas, 55 miles Southwest of San Antonio. Leaf rust was also uniform in the lower canopy in our trials at Uvalde, Texas. 'TAM 110' has 60S and you can see orange on the soil. Trace amounts of leaf rust were also uniform in our spreader blends in our Rust Evaluation Nursery at Castroville. The nursery looks lush and leaf rust is actively developing. Powdery mildew was heavy in the lower canopy of susceptible lines on February 7, 2013. Leaf rust was also present in trace amounts in our trials at College Station.
"We detected trace amounts of stripe rust in our trials at College Station and our team is monitoring the situation closely. We also detected 20S stripe rust on TAM 110 at Uvalde."
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