Crop Diseases

Resources, tools, and information specific to crop disease identification and management.

Crop Disease ICM News Articles and Blog Posts

May 30, 2023 Is a fungicide application to corn at V5 a worthwhile input?
May 8, 2023 2022 Summary of Foliar Fungicide Applications on Corn in Iowa
Apr 20, 2023 Alfalfa Weevil Larvae Active in Southern Iowa
Apr 11, 2023 Eight New Virtual Crop Scout School Webinars from the Crop Protection Network
Mar 30, 2023 Tar Spot and Fungicide Survey
Jan 13, 2023 Statewide evaluation of foliar fungicides on soybeans in 2022
Nov 22, 2022 More soybean varieties with Peking SCN resistance for 2023, but more needed
View more ICM News and ICM Blog articles about diseases

Crop Disease Publications

Corn and Soybean Field Guide
A Farmer's Guide to Corn Diseases A Farmer's Guide to Corn Diseases
A Farmer's Guide to Soybean Diseases A Farmer's Guide to Soybean Diseases

View additional publications at the Extension Store and Crop Protection Network

Diseases Videos

How to check for varroa mite: ETHER ROLL
How to check for varroa mite: ALCOHOL WASH
How to check for varroa mite: SUGAR SHAKE
Crop Advantage Series January 2020 (with field agronomist Meaghan Anderson)
Crop Advantage Series January 2020 (with entomologist Erin Hodgson)
View more disease videos

Crop Disease Descriptions

Bacterial leaf streak  Bacterial Leaf Streak

Diplodia stalk rot  Diplodia Stalk Rot

Sudden Death Syndrome  Sudden Death Syndrome

View more corn disease and soybean disease descriptions

Field Specialists

Meaghan Anderson
Meaghan Anderson
Field Agronomist in Central Iowa
(319) 331-0058
Terry Basol
Terry Basol
Field Agronomist in NC Iowa
(641) 426-6801
Joel DeJong
Joel DeJong
Field Agronomist in NW Iowa
(712) 546-7835
Angie Rieck-Hinz Headshot
Angie Rieck-Hinz
Field Agronomist in NC Iowa
(515) 231-2830
Aaron Saeugling
Aaron Saeugling
Field Agronomist in SW Iowa
(712) 243-1132
Virgil Schmitt
Virgil Schmitt
Field Agronomist in SE Iowa
(563) 263-5701
Gentry Sorenson Headshot
Gentry Sorenson
Field Agronomist in NW Iowa
641-430-6715
Rebecca Vittetoe
Rebecca Vittetoe
Field Agronomist in EC Iowa
(319) 653-4811
Michael Witt
Michael Witt
Field Agronomist in WC Iowa
(641) 430-2600

Disease Campus Specialists

Laura Jesse Iles
Laura Jesse Iles
Director, North Central IPM Center
(515) 294-0581
Daren S Mueller
Associate Professor, Extension Plant Pathologist
5154608000
Alison Robertson photo
Alison Robertson
Professor of Plant Pathology and Microbiology, Extension Field Crops Pathologist
(515) 294-6708
Greg Tylka photo
Greg Tylka
Morrill Professor, Nematologist, Director of the Iowa Soybean Research Center
515-294-3021
Edward Zaworski
Ed Zaworski
Plant Pathology Diagnostician, Extension Program Specialist II
(515) 294-0581