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Website: Wheat Disease section of CropWatch Plant Disease Management
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After Rains, Some Wheat Diseases Increasing
April 22, 2016
Following rains across much of the state last week, wheat diseases appear to be increasing, based on field surveys this week. Reported diseases include powdery mildew, stripe rust, and leaf spot.
Stripe Rust & Aphids Confirmed in Nebraska Wheat
April 15, 2016
Wheat disease surveys on April 8 and April 12-14 found stripe rust and leaf rust at trace to low levels in south central and southeast Nebraska and in the Panhandle. Given the locations of outbreaks in Banner County this spring are the same as when the disease was identified in seedlings last fall, the two rusts may have overwintered. See more reports and management recommendations.
Wheat Leaf Rust Confirmed in Nebraska
March 31, 2016
On March 30, leaf rust was found in several wheat fields in Nuckolls County in south central Nebraska. Severity was trace (Figure 1), but the rust was found in every field surveyed. Presence of leaf rust in Nebraska this early in the growing season suggests it may have overwintered or is a result of unusually warm winter temperatures which resulted in earlier than normal movement of spores from southern states into our region.
Wheat Rust in Kansas; Start Scouting Nebraska Fields
March 22, 2016
Due to above average temperatures this winter and going into the spring, coupled with moisture, stripe rust and leaf rust have moved north from southern states sooner than expected.
Wheat Disease Update: Leaf Rust Confirmed in Eastern Nebraska
May 22, 2015
Severity of wheat diseases has increased significantly over the last week. At UNL's Agricultural Research and Development Center (ARDC) near Mead.
Factors to Consider When Deciding Whether to Treat Stripe Rust in Wheat
May 22, 2015
The first appearance of stripe rust pustules in a field indicates that spores arrived in the field and initiated infections at least seven days earlier. Apply a fungicide if stripe rust is seen in a field and the following conditions or factors exist:
- Wet, cool weather.
- The flag leaf has emerged (or earlier depending on the situation).
- It's a susceptible variety.