Wheat Pest and Disease Update

  • 2023 Colorado Wheat Stem Sawfly Survey Report

    October 11, 2023

    Research Assistant Authors: Ashley Raffa, Anne Sellman, Johanna Merkel, Zhi Mei Maria Lee, Ella Stankiewicz Adam Osterholzer: adam.osterholzer@colostate.edu, 970-222-9568 Dr. Punya Nachappa: Punya.Nachappa@colostate.edu, 785-383-4873 Colorado state-wide wheat stem sawfly survey The CSU Wheat Entomology Program, with the support of Colorado … Continue reading

  • Wheat Entomology Newsletter – June 26, 2023

    June 26, 2023

    Adam Osterholzer: adam.osterholzer@colostate.edu, 970-222-9568 Dr. Punya Nachappa: Punya.Nachappa@colostate.edu, 785-383-4873 Grass sawfly We have not observed any grass sawfly larvae in our field surveys. This suggests that the larvae have matured and have dropped to the soil. They will form pupae … Continue reading

  • Wheat Disease Newsletter – June 20, 2023

    June 20, 2023

    Dr. Robyn Roberts Field Crops Pathologist and CSU Assistant Professor Robyn.Roberts@colostate.edu* 970-491-8239 *Email is the best way to reach me Disease Observations Stripe rust Stripe rust has been spotted at low incidence and severity across much of Colorado’s wheat growing … Continue reading

  • Wheat Entomology Newsletter – June 12, 2023

    June 12, 2023

    Adam Osterholzer: adam.osterholzer@colostate.edu, 970-222-9568 Dr. Punya Nachappa: Punya.Nachappa@colostate.edu, 785-383-4873 Wheat field days It was so great to see many of you during Wheat field days and to see the wheat crop looking so gorgeous! Thanks to Sally and her team, … Continue reading

  • Wheat Disease Newsletter – June 7, 2023

    June 7, 2023

    Dr. Robyn Roberts Field Crops Pathologist and CSU Assistant Professor Robyn.Roberts@colostate.edu* 970-491-8239 *Email is the best way to reach me Thank you to all who attended the Colorado Wheat Field Days! We certainly lucked out with the weather, and it … Continue reading

  • Wheat Entomology Newsletter – May 30, 2023

    May 31, 2023

    Adam Osterholzer: adam.osterholzer@colostate.edu, 970-222-9568 Dr. Punya Nachappa: Punya.Nachappa@colostate.edu, 785-383-4873 Wheat Stem Sawfly We have continued our sweeps twice per week at Orchard and New Raymer, CO. This month’s average catch has deviated significantly from what we observed throughout the month … Continue reading