Turfgrass Rust

August 8, 2014

Rust is a fungal disease caused by several species of Puccinia.  All turfgrass species are susceptible to rust.  However, it is most commonly seen on perennial ryegrass and Kentucky bluegrass. 


From a distance, rust infected turf has a yellow-brown color.  Close examination of rust-infected grass blades reveals numerous yellow-orange pustules.  Rust can be easily diagnosed by walking across the lawn.  As one walks across the lawn, bright orange spores of the rust fungus rub off onto one’s shoes. 

Gettin’ Fungicide All Up in My Canopy

I See Dead Plants

On this episode of the I See Dead Plants Podcast, host Ed Zaworski speaks with Dr. Andrew Penney, a former PhD. student at Iowa State University who now works with Bayer Crop Sciences as a Technical Agronomist. Andrew shares his past experiences as a student working to understand different fungicide application technologies and how they affect overall yield. He also explains his research findings from his article, published by Elsevier Ltd., called “Comparison of aerial and ground sprayer fungicide application technologies on canopy coverage, disease severity, lodging, and yield of corn”.

Additional Resources:

Meta-analysis of yield response of foliar fungicide-treated hybrid corn in the United States and Ontario, Canada by Wise et al. 2019.

Fungicide Efficacy for Control of Corn Diseases from the Crop Protection Network.

Impact of foliar fungicide timing and fungicide class on corn yield response in the United States and Ontario, Canada from the Crop Protection Network.

Fungicide Use in Field Crops web book from the Crop Protection Network.

Comparison of fungicide application technology: Relationship between coverage and disease severity and the physiological impact of fungicides on grainfill thesis.

How to cite this podcast:

Zaworski, E. (Host) and Penney, A. (Interviewee). Gettin’ Fungicide All Up in My Canopy. S1:E3 (Podcast). July 28, 2021. In I See Dead Plants. Crop Protection Network. Https://'-fungicide-all-my-canopy.