We recently received an email alert from OSU cereals specialist Mike flowers regarding Stagonospora nodorum Blotch (formerly Septoria nodorum).
I wanted to alert everyone to an emerging disease problem in western Oregon. Stagonospora nodorum Blotch (formerly Septoria nodorum) seems to be rearing its ugly head this year. This leaf disease is very similar to the Septoria tritici that we usually see in western Oregon (see attached pictures). The main difference is that there are no black spots (pycnidia) in the lesions. The pycnidia of Stagonospora nodorum are brown and very difficult to see. In addition, if left uncontrolled Stagonospora nodorum can have a significant effect on yield if it infects the wheat head. Therefore, it is very important that growers control this disease with fungicides to prevent further infections.MikeEmail: email@example.com
The Good news to this potential problem is that we have effective fungicides that are very good at preventing/controlling the damage. Please take time to review with your fieldman your wheat disease control program to make sure you are covered.