Nathan Kleczewski, Extension Specialist – Plant Pathology; nkleczew@udel.edu
Each year the NCERA 184 wheat pathology group gathers and publishes an updated list of fungicides for small grains. We utilize our local data to determine the relative performance of products on specific diseases. This year’s list is changed somewhat from last years. Please note the footnote on fungicide resistance in leaf blotches at the bottom of the table. The table can be found on the Field Crop Disease Management Blog, at this link: http://extension.udel.edu/fieldcropdisease/2015/04/13/2015-wheat-fungicide-table-now-available/
Wheat is rolling and moving fast. Many fields are at FGS 5-6. Currently diseases are hard to come by, although powdery mildew is present in some fields at low levels. If you have a field with powdery mildew, we are looking to collect samples to send to colleagues in North Carolina. There they will screen the fungus and determine what resistance genes do not control the pathogen. We can then use this information to provide you with information on the resistance genes contained in wheat grown in this area, allowing you to select varieties that are unlikely to succumb to the disease in subsequent years. Feel free to contact me at 302-831-4768 and we can head out and collect samples.