Berg Agricultural Hall 261
Agronomy, Horticulture & Plant Science-2207A
Brookings, SD 57007
Madalyn supports the citizens of South Dakota in her role as an Assistant Professor and SDSU Extension Plant Pathology Specialist located at the South Dakota State University campus in Brookings.
Aster yellows phytoplasma, best known as Aster Yellows disease or Onion Yellows disease, is commonly observed in purple coneflowers across the Great Plains. SDSU Extension is monitoring and modeling its distribution in the region, and you can help!
Stop by the SDSU Extension booth at Dakotafest to meet specialists, ask questions, get recommendations and learn about programming and events.
Wheat streak mosaic virus is on the move across South Dakota wheat fields. Due to the mild winter and overwintering in winter wheat, viral activity has had a jump start in 2026, and the occurrence and intensity of disease pressure is comparable to the 2025 season.
