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What is the Iowa Pest Resistance Management Program?

The Iowa Pest Resistance Management Program is a grassroots, collaborative effort to protect Iowa crops from costly pest resistance that threatens our crop production and our state’s economy. The program is made up of individuals and groups representing all parts of the Iowa community, including farmers and landowners, small and national businesses, scientists, researchers and state regulators. Together, these groups and individuals have leveraged their resources, expertise and time to help inform the public about pest resistance, find new pest management strategies and encourage public support and adoption of these practices.

How can you get involved?

The Iowa Pest Resistance Management Program (IPRMP) was designed for you to get involved. The program features four pilot programs across the state that are working to combat various types of pest resistance. These include: Managing Western Corn Rootworm in Northeast Iowa; the Harrison County Pest Resistance Management Project in Southwest Iowa; Managing Soybean Aphid in Northwest Iowa; and Managing Herbicide-Resistant Waterhemp in Story County. To learn more about the IPRMP and the pilot programs, check out the Q&A here. To learn how you can lend your support or develop your own community project, please email

IPRMP Questions and Answers

Click here to learn more about the IPRMP. 

Version 1 of the IPRMP is here

IPRMP Introduction--Webinar Recording


Iowa Pest Resistance Management Plan Unveiled

January 30, 2017

Iowa Pest Resistance Management Plan logo

DES MOINES – Iowa Secretary of Agriculture Bill Northey, Iowa State University College of Agriculture and Life Sciences Associate Dean John Lawrence and Iowa farmer Larry Buss of Logan today announced the release of the Iowa Pest Resistance Management Plan. A video of the announcement is available here.

Version 1 of the IPRMP is an Iowa-specific plan that seeks to engage farmers on the issue of pest resistance management with the goal of keeping technology and tools such as pesticides, seed treatments and biotechnology products and native traits available and effective.

A Sticky Situation: How Tar Spot Makes Your Ears Smaller

I See Dead Plants

On this episode of the I See Dead Plants Podcast, host Ed Zaworski speaks with Dr. Darcy Telenko about tar spot, a new disease of corn in the United States. Dr. Telenko is an Assistant professor of Plant Pathology at Purdue University who specializes in diseases of field crops.

Additional Resources:

Tar Spot of Corn Publication from the Crop Protection Network.

Tar Spot of Corn Web Book from the Crop Protection Network.

Tar Spot Distribution Map from the Corn ipmPIPE.

Tarspotter Disease Forecasting App from the University of Wisconsin-Madison.

How Tar Spot of Corn Impacted Hybrid Yields During the 2018 Midwest Epidemic from the Crop Protection Network.

Will a Second Fungicide be Worth the Cost for Tar Spot Management? from the Crop Protection Network.

Recovery Plan for Tar Spot of Corn, Caused by Phyllachora maydis in Plant Health Progress.

Tar Spot: An Understudied Disease Threatening Corn Production in the Americas in Plant Disease.

Documenting the Establishment, Spread, and Severity of Phyllachora maydis on Corn, in the United States in the Journal of Integrated Pest Management.

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

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

How to cite this podcast:

Zaworski, E. (Host) and Telenko, D. (Interviewee). A Sticky Situation: How Tar Spot Makes Your Ears Smaller. S1:E4 (Podcast). September 30, 2021. In I See Dead Plants. Crop Protection Network. Https://


Coffee Rust: The Parasite that Wants to Ruin Your Morning

I See Dead Plants

On this episode of the I See Dead Plants Podcast, host Ed Zaworski takes a dive into the world of coffee and coffee rust. What if the world’s supply of coffee was threatened by a rapidly spreading plant disease that caused coffee tree leaves to fall off the plant and stopped beans from developing? What if our supply of coffee dwindled due to this disease? Will mornings at the office become unbearable as zombie-like coworkers stumble to their desks with sleep still heavy in their eyes? Will the water cooler become a veritable no-man’s land where tempers flare at the slightest provocation? If not for the work that plant pathologists and other scientists do every day, this horror story could become a reality. We will explore the impact of coffee rust on coffee, with an introduction to coffee and how it’s become such an integral part of our lives.

How to cite this podcast:

Zaworski, E. (Host). Coffee Rust: The Parasite that Wants to Ruin Your Morning. S1:E6 (Podcast). December 28, 2021. In I See Dead Plants. Crop Protection Network. Https://


Aime, M. C., A. R. McTaggart, S. J. Mondo, and S. Duplessis. 2017. Phylogenetics and Phyloenomics of Rust Fungi. Fungal Phylogenetics and Phylogenomics. 267–307.

Arneson, P. A. 2000. Coffee rust. The Plant Health Instructor.

Avelino, J., S. Vílchez, M. B. Segura-Escobar, M. A. Brenes-Loaiza, E. de Virginio Filho, and F. Casanoves. 2020. Shade tree chloroleucon eurycyclum promotes coffee leaf Rust by reducing Uredospore wash-off by rain. Crop Protection. 129: 1–8.

Bertrand, B. 2015. Next-generation F1 Hybrid Varieties. Next-Generation F1 Hybrid Varieties. (

Boudrot, A., J. Pico, I. Merle, E. Granados, S. Vílchez, P. Tixier, E. de Filho, F. Casanoves, A. Tapia, C. Allinne, R. A. Rice, and J. Avelino. 2016. Shade effects on the dispersal of airborn ehemileia vastatrix uredospores. Phytopathology. 106: 572–580.

Carvalho, C. R., R. C. Fernandes, G. M. Carvalho, R. W. Barreto, and H. C. Evans. 2011. Cryptosexuality and the genetic Diversity paradox in Coffee Rust, Hemileia vastatrix. PLoS ONE. 6.

Daba, G., K. Helsen, G. Berecha, B. Lievens, A. Debela, and O. Honnay. 2019. Seasonal and altitudinal differences in coffee leaf rust epidemics on coffee berry disease-resistant varieties in southwest ethiopia. Tropical Plant Pathology. 44: 244–250.

Djuikem, C., F. Grognard, R. T. Wafo, S. Touzeau, and S. Bowong. 2021. Modelling Coffee Leaf Rust Dynamics to control its spread. Mathematical Modelling of Natural Phenomena. 16: 1–24.

Hoffmann, J. 2018. The world atlas of coffee: From beans to brewing - coffees explored, explained and enjoyed. Mitchell Beazley, London.

International Coffee Organization. 2015. Field Processing. International Coffee Organization. (

International Coffee Organization. 2021. ICO World Coffee Production.

The IR-4 Project. 2020. About IR-4. The IR-4 Project. (

Kostenko, A. 2021. Pruning Methods for the Management of Coffee Leaf Rust and Coffee Berry Borer in Hawaii. (

Lashermes, P., M.-C. Combes, J. Robert, P. Trouslot, A. D'Hont, F. Anthony, and A. Charrier. 1999. Molecular characterisation and origin of the coffea arabica l. genome. Molecular and General Genetics MGG. 261: 259–266.

National Coffee Association. 2020. NCA releases Atlas of American Coffee. NCA. (

Penarredonda, J. 2017. The disease that could change how we drink coffee. BBC Future. (

Pérez, C. D., E. A. Pozza, A. A. Pozza, A. S. de Freitas, M. G. Silva, and D. da Silva Gomes Guimarães. 2019. Impact of nitrogen and potassium on coffee rust. European Journal of Plant Pathology. 155: 219–229.

Salcedo-Sarmiento, S., C. E. Aucique-Pérez, P. R. Silveira, A. A. Colmán, A. L. Silva, P. S. Corrêa Mansur, F. Á. Rodrigues, H. C. Evans, and R. W. Barreto. 2021. Elucidating the interactions between the Rust Hemileia vastatrix and a calonectria mycoparasite and the Coffee Plant. iScience. 24.

Specialty Coffee Association of America. 2015. SCAA Protocols. Cupping Specialty Coffee.

Talhinhas, P., D. Batista, I. Diniz, A. Vieira, D. N. Silva, A. Loureiro, S. Tavares, A. P. Pereira, H. G. Azinheira, L. Guerra-Guimarães, V. Várzea, and M. do Silva. 2017. The coffee leaf RUST Pathogen Hemileia vastatrix: One and a half centuries around the tropics. Molecular Plant Pathology. 18: 1039–1051.

Tepper, R. 2012. The world's most expensive coffee is made with elephant dung. HuffPost. (

Thuot, B. M. 2012. It's the sh*t. The Economist. (

World Coffee Research. 2019. T8667 Catimor. Arabica Coffee Varieties. (