Many pathogens cause corn seed decay and seedling blight. The first symptom may be an area of the field with poor or no stand. Decayed seeds are very soft and may be covered with fuzzy fungal growth; seeds can be difficult to find if badly rotted. Postemergence damping off

Will a fungicide be worth it? Corn Fungicide Return on Investment Calculator at cropprotectionnetwork.org/fungicide-roi-…. Save this site to help with decision-making later this season. Based on data from Tom Allen Mandy Bish Kaitlyn Bissonnette SDSU Extension Martin Chilvers Dr. Alyssa Collins

Farmers, ag industry, CCAs: Take the 2025 Soybean Seedling & Stem Disease Survey at app.smartsheet.com/b/form/d1f7a7a… Your insights are essential. Help us understand important soybean disease issues & the value of the Crop Protection Network. Ed Sikora Alison Robertson Daren Mueller Kiersten Wise

Over 400 data points were evaluated from trials across the U.S. & Ontario to compare foliar fungicides applied at V6, VT, & a two-pass program at V6+VT. RESULT: A single fungicide application of a DMI+QoI fungicide at VT had the greatest likelihood of a positive return on

Fungicide ROI, yield loss & severity estimation, disease forecasting & more at cropprotectionnetwork.org/tools. Multiple tools for crop scouts, CCAs, and researchers from Extension. Ed Sikora Darcy Telenko Travis Faske Mandy Bish Maddi Shires Kiersten Wise Dylan Mangel Wade Webster

Fusarium graminearum why all the fuss? canr.msu.edu/news/fusarium-… MSU-PSM Department MSU Extension Field Crops MSU Plant & Pest Diagnostics MSU Extension MSU Wheat Genetics

Tar spot management starts with proper ID. These are not tar spot.

Corn Fungicide ROI Calculator at cropprotectionnetwork.org/fungicide-roi-… See potential ROI across a variety of user-defined factors, based on university research data. From datascience@uw Damon L. Smith Kiersten Wise Albert Tenuta Daren Mueller Tom Allen Mandy Bish SDSU Extension

Crop Lookout is an interactive map showing emerging field crop issues in the U.S. & Canada. Updated by Extension, this map shows reports of diseases, pests, & other agronomic challenges. Check out Crop Lookout at cropprotectionnetwork.org/crop-lookout Darcy Telenko Ed Sikora Tom Allen

If northern corn leaf blight is present in the canopy before and just after tasseling (VT), and conditions are favorable for disease, significant yield losses can occur in susceptible hybrids. Get ID and management info for northern corn leaf blight at cropprotectionnetwork.org/publications/a….

These are not tar spot. For tar spot prediction data near your farm, check out the Forecasting Tool at cropprotectionnetwork.org/crop-disease-f…. Damon L. Smith Martin Chilvers Tamra Jackson-Ziems Tom Allen Bob Kemerait Alison Robertson Mandy Bish Maddi Shires NDSU Extension Darcy Telenko Onofre Lab

Southern rust confirmed today on corn in Crittenden County, KY. Depending on growth stage, corn may need a fungicide application. Check the Crop Protection Network map to track disease and determine if an application is needed! cropprotectionnetwork.org/maps/southern-… University of Kentucky Martin-Gatton CAFE UK Extension

Southern rust of corn ID and management at cropprotectionnetwork.org/publications/a…. Ask local Extension for more info. Darcy Telenko Boris X Camiletti Maddi Shires Tamra Jackson-Ziems Ed Sikora Travis Faske Tom Allen Bob Kemerait Daisy Ahumada Yuan Zeng Onofre Lab Maíra Duffeck 🌾🍄🦠🔎🔬💻📊👩‍🔬👩🏼‍💻 Damon L. Smith

Check out Diagnosing Interveinal Chlorosis in Soybeans — it’s not just SDS from Extension at doi.org/10.31274/cpn-2…. Kiersten Wise Tom Allen Febina Mathew Daren Mueller Darcy Telenko Dylan Mangel Wade Webster Damon L. Smith Martin Chilvers Ed Sikora Mandy Bish Maddi Shires

Scouting is similar for all corn ear rots. Begin scouting at late dent (R5) for presence and severity of ear rots. Select 100 plants across the field (20 ears each from 5 different areas). Peel back husks to see the entire ear. Get ID and management info in An Overview of Ear

Scouting for Corn Ear Rots. Watch at youtu.be/LN-kKuaaxKc. From University of Kentucky's Kiersten Wise. University of Kentucky Martin-Gatton CAFE UK Extension KY Dept of Ag Kentucky Farm Bureau Federation Chad Lee 🧢 KY AgriBusiness #corn National Corn (NCGA)

NEW Alfalfa Fungicide ROI Calculator at cropprotectionnetwork.org/alfalfa-fungic…! Damon L. Smith Kiersten Wise Maíra Duffeck 🌾🍄🦠🔎🔬💻📊👩‍🔬👩🏼‍💻 Darcy Telenko Martin Chilvers Wade Webster Kelsey Andersen Onofre datascience@uw Funding: North Central IPM Center NIFA #alfalfa #fungicide

Corn disease took 6% of every acre in 2024. Scout now to plan for future seasons.

Scouting is similar for all corn ear rots. Starting at late dent stage (R5), choose 20 ears from five areas in the field. Pull back the husk to see the entire ear. It's critical to identify ear rots in the field as many ear rot fungi produce mycotoxins, which can harm livestock

Some r starting to see some black on r around those rust pustules. Much of the black spores/spots are still southern rust where it switches to black teliospores late season n attempt to survive. It's NOT all tar spot. Thanks 4 the pic Lily Ziehmer (Woitaszewski)! FMI cropprotectionnetwork.org/publications/a…