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Southern rust pustules are orange and about 1/16 inch in diameter. The majority of pustules are on upper leaf surfaces. Pustules usually appear first in the middle or upper canopy in isolated “hot spots,” often at row ends along field borders. When conditions that favor

Since the mid-1990s, Fusarium head blight has emerged as one of the most significant diseases affecting small grain production, with epidemics occurring at higher frequencies and over a larger area than in the past. Yield losses can exceed 50% if conditions favor disease;

Fungicide efficacy for corn, soybean and wheat from Extension. Corn: doi.org/10.31274/cpn-2… Soybean: doi.org/10.31274/cpn-2… Wheat: doi.org/10.31274/cpn-2… Ed Sikora Maíra Duffeck 🌾🍄🦠🔎🔬💻📊👩‍🔬👩🏼‍💻 Tom Allen Maddi Shires Daren Mueller Alison Robertson Albert Tenuta Damon L. Smith Martin Chilvers

Ever use info from the Crop Protection Network? Please help them out by completing this survey on soybean disease and outreach value: app.smartsheet.com/b/form/d1f7a7a… Alison Robertson Kiersten Wise Darcy Telenko Crop Protection Network Martin Chilvers Damon L. Smith Tom Allen #soybeans #AgTwitter

Congrats to Mizzou PhD students Jeff Barizon & Feyisayo Akande on excellent presentations at the 2025 North Central APS meeting. Feyi won 3rd place for her oral presentation on SCN management & Mizzou was well represented. Mizzou CAFNR Mizzou IPM Missouri Soybeans MU Plant Diagnostic Clinic

“Stem canker can cause premature death of soybean in large areas of the field...The greatest impact on yield occurs when plants are infected early during the vegetative stages, and favorable weather conditions persist until later reproductive growth stages...” From the newly

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

Proper ID is key. We confirmed tar spot in northwest MO this week. Don’t be fooled by lookalikes. MU Plant Diagnostic Clinic Mizzou IPM MU Extension - Agriculture and Environment Program Missouri Corn

Track disease and insect movement at cropprotectionnetwork.org/maps. Keep tabs on▪️southern rust▪️tar spot▪️red crown rot▪️corn leafhopper▪️reniform nematode▪️root-knot nematode▪️soybean rust▪️stripe rust From Extension. Maíra Duffeck 🌾🍄🦠🔎🔬💻📊👩‍🔬👩🏼‍💻 Ed Sikora Darcy Telenko Tamra Jackson-Ziems Boris X Camiletti

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

Watch White Mold: Insights and Updates for 2025 from Extension at youtu.be/7Ak_n9Fh79U. Wade Webster Damon L. Smith Martin Chilvers Wisconsin Soybean Marketing Board Wisconsin Soybean Association Michigan Soybean NDSoybean NDSoyGrowers North Dakota Soybean Processors NDSU Extension NDSU AgExpStation MSU 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

“Effective management of soybean stem diseases starts with proper identification. Symptoms typically appear in the mid to late reproductive stages of soybean.” From the Scouting for Soybean Stem Diseases publication at cropprotectionnetwork.org/publications/s… by Kiersten Wise Tom Allen

“Managing [Cercospora leaf blight] mainly relies on using foliar fungicides from multiple fungicide classes, and applying them at appropriate reproductive growth stages.” From the article An Overview of Cercospora Leaf Blight at cropprotectionnetwork.org/publications/a… by Trey Price

Just posted: An Overview of Fusarium Root Rot publication from Extension at cropprotectionnetwork.org/publications/a…. Febina Mathew Maíra Duffeck 🌾🍄🦠🔎🔬💻📊👩‍🔬👩🏼‍💻 LeAnn Lux Dylan Mangel Wade Webster Tom Allen Mandy Bish Travis Faske Daren Mueller Alison Robertson Ed Sikora Darcy Telenko Kiersten Wise +others

Mizzou Crop & Pest Field Day today! Jeff did a great job sharing his PhD research on plant parasitic nematodes in Missouri soybean. MU Extension - Agriculture and Environment Program MU Plant Diagnostic Clinic Missouri Soybeans

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

Southern rust, tar spot & gray leaf spot = fungi. Bacterial leaf streak & Goss's wilt = bacteria. Properly ID & assess risk for best disease management outcomes. Ask local Extension for more info. Darcy Telenko Alison Robertson Tom Allen Maíra Duffeck 🌾🍄🦠🔎🔬💻📊👩‍🔬👩🏼‍💻 Maddi Shires Mandy Bish

“Integrating several [white mold] management practices including cultural control, varietal resistance, scouting, prediction tools, and chemical and biological control can form an effective management plan for white mold.” From the White Mold of Soybean web book at