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Northern Illinois Agriculture

University of Illinois Extension
stripe rust

Stripe rust of wheat found at NIARC

Posted by Russel Higgins -

Stripe rust of wheat has been a topic for several weeks in the Illinois Bulletin. The disease was initially reported in southeastern Missouri and Arkansas. It then progressed into southern and central Illinois and this week was identified by Norman Smith on susceptible germplasm in the wheat variety testing trials at the NIARC. Stripe rust symptoms first occur as chlorotic linear streaks on the leaves. Later on, yellow to orange pustules will develop in a linear fashion ("stripes") within these chlorotic streaks. While most commercial varieties appear to have adequate resistance to the disease, now would be the time to scout. Most wheat fields in northern Illinois have started to flower (Feekes 10.51) If Stripe rust is present fungicides registered for control of Fusarium head blight (scab), such as Caramba, Prosaro, and tebuconazole products (e.g. Folicur and others), would be the products to apply for protection against stripe rust if needed. In addition to suppressing Fusarium head blight, these products have excellent efficacy against stripe rust, and their labels allow applications during flowering (unlike other products that may not allow applications past Feekes 10.5 - heading).
http://bulletin.ipm.illinois.edu/article.php?id=1608
http://bulletin.ipm.illinois.edu/article.php?id=1620
Today at the NIARC the oat testing trials were treated with a herbicide, and we hope to plant date of planting studies in both corn and soybean.



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