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Pests

Resistance is showing up in weeds, insects and disease pathogens in Iowa and has the potential to impact yields, increase the cost of production, and limit farmers’ future
pest management options.

Examples of Resistant Weeds

Common cocklebur, common lambsquarters, common sunflower, giant foxtail, giant ragweed, horseweed, Kochia, Pennsylvania smartweed, waterhemp, and recently, Palmer amaranth.

Examples of Resistant Insects

Western corn rootworm, also soybean aphid populations near, but not yet inside, Iowa.

Examples of Resistant Diseases

Soybean cyst nematode and frogeye leaf spot.

Pilot projects will be selected from these pest options and will be used to inform management option strategies as well as collaborative efforts within communities to resolve resistant pest issues.

Category: 

Fungicide Thoughts for 2014 Season

July 7, 2014

We will have a fair amount of corn tasseling shortly after the weekend – so fungicide application season is about here.


In talking with farmers and retailers the last week or so, based on all the rainfall and wet soils this is shaping up to be a big year for fungicide applications, so just a few thoughts for guys “on the fence” and trying to decide whether to spray or not.

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.

Mid-Season Update on Fungicides and Corn Diseases

July 23, 2014

We continue to receive several questions about Northern corn leaf blight, Goss’s wilt and fungicides. Here is some additional information.


Basics of fungicides


Parts of rural Iowa are abuzz about fungicide use to manage some emerging diseases, and we have received several questions about the basics of fungicides. A quick reminder, APS PRESS recently published a book geared towards farmers and agronomists on the basics of fungicides.

ICM Conference 2018: Day 2 Round Up

November 29, 2018

Day 2 of the #ICM30 Conference has wrapped up and while we feel great about the sessions we were able to get to today, there were plenty out there that we were not able to get to that had just as helpful information. Make sure to get on Twitter and search for the #ICM30 to get all of the updates from various presentations today.

Here is a round-up of several sessions today in relation to Integrated Pest Management:

Brad Coates
Insect Resistance to Bt