Crop & Pest Report

Accessibility


| Share

Low Occurrences of Disease in Wheat and Barley (06/18/20)

The IPM scouts visited over 100 wheat fields last week and reported very few diseases. Tan spot was the most frequently found disease but was only reported in approximately 10% of the fields.

The IPM scouts visited over 100 wheat fields last week and reported very few diseases. Tan spot was the most frequently found disease but was only reported in approximately 10% of the fields. The highest levels of tan spot severity were found in wheat on wheat production systems. Similarly, fungal leaf spots (net blotch and spot blotch) were reported in approximately 10% of the barley fields surveyed. Sporadic rain, high temperatures and strong winds have prevented morning dews, which are key for fungal growth and infection, leading to the development of fungal leaf spots. Most photos I have received of damaged small grain leaves indicate that the leaf spots have been caused by wind damage, heat stress, and other abiotic (non-living) stressors (Figure 1).

ppth.5

 

Andrew Friskop

Extension Plant Pathology, Cereal Crops

This site is supported in part by the Crop Protection and Pest Management Program [grant no. 2017-70006-27144/accession 1013592] from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed are those of the website author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

USDA logo

Creative Commons License
Feel free to use and share this content, but please do so under the conditions of our Creative Commons license and our Rules for Use. Thanks.