First report of southern rust in Kansas for 2020
Southern rust in corn has been detected in both Kansas and Nebraska. Get answers to the most common questions associated with this corn disease in this article from K-State Plant Pathology.
Status of disease pressure in corn and soybeans
What diseases are cropping up in corn and soybean fields this summer? For corn, most fungicide applications have been made, except for late-planted fields. Soybeans are generally looking good. Read more about what diseases have been found in soybean fields.
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Stripe rust distribution and risk assessment - April 29, 2021
The wheat crop is moving into the flag leaf stage in central Kansas and heading in the southern counties. Now is a critical time to assess the need for a foliar fungicide application. Scouting is a critical first step for stripe rust control. Learn more in this article from K-State wheat pathologists.
Start scouting corn for southern rust in Kansas
Southern rust is now active on corn in Texas, Louisiana, and Georgia. Although this disease has not yet been reported in Kansas, it is time to start actively monitoring corn fields. The 10-day forecast indicates that weather will remain favorable for disease development.
Status of disease pressure in corn - June 25, 2021
This article provides an update on the status southern rust and common rust on corn in Kansas as of June 25, 2021. Also discussed is an unusual symptom showing up in select northeast Kansas field called lesion mimic.
Fungicide considerations for corn diseases: Scouting is key
Corn producers in Kansas should be scouting fields and assessing the need for a foliar fungicide application. Different diseases are discussed in this article with management recommendations.
Outlook for stripe rust in the 2022 Kansas wheat crop
The weather is warming, and wheat has started to green up across the state. With the onset of spring weather, it is time to look at factors that could influence the yield potential of the Kansas wheat crop. At the time of this publication, there have been no reports of stripe rust in Kansas.
Fungicide considerations for corn diseases in 2022
corn fungicide foliar fungicides foliar diseases crop scouting
First report of southern rust in Kansas
Southern rust has been detected in northeast Kansas, making this the first report of 2022. The severity will be dependent on the weather. Southern rust likes 90-degree days, warm nights, and high humidity. Get answers to the most questions about southern rust in this article from K-State plant pathologist, Dr. Rodrigo Borba Onofre.
Tar spot of corn: A new threat to Kansas corn
Tar spot of corn has been officially detected for the first time in Kansas. Two counties in northeast Kansas have confirmed cases of tar spot. Tar spot was first detected in the US in 2015 and has quickly spread thoughout the Midwest. Now is the critical time to identify fields with tar spot as these locations could be at a higher risk for 2023.
Tar spot of corn is now confirmed in five counties in Kansas
Tar spot of corn has now been confirmed in five counties in northeast Kansas. Tar spot lesions are black, raised and have a round/elliptical shape. This pathogen can survive in crop residue. Producers are encouraged to scout any standing corn fields. Fields with confirmed causes should be harvested last if possible to mitigate disease spread.
Tar spot of corn has arrived in Kansas this season
Tar spot of corn, a disease caused by the fungus Phyllachora maydis, was confirmed in several fields in Doniphan County, Kansas on June 26, 2023. Corn growers should intensify scouting efforts. This article discusses several frequently asked questions about this new disease in Kansas. Early detection and timely fungicide treatment are critical to maximizing control of tar spot.
Considerations for early fungicide applications on wheat in 2024
There are some advantages and limitations to making an early-season fungicide application to wheat. The likelihood of profit for an early-season fungicide application is greatest for susceptible varieties in continuous wheat systems with a high level of surface wheat residue. In this article, you will learn about all the options for timing applications of wheat fungicides.
Low levels of Tar Spot have been confirmed in Kansas
Low levels of tar spot has been confirmed in several corn fields in Doniphan and Atchison counties in Kansas. These are the first documents reports of tar spot in the U.S. for this growing season. Now is the time to intensify scouting efforts. Once significant disease pressure is in the upper canopy, a fungicide application may be too late.
Update - Tar Spot is now active in four counties in northeast Kansas
Tar spot has been confirmed in several fields spread across four counties in the northeast corner of Kansas. Producers in or near this region need to intensify scouting efforts. Recent rainfall has likely helped promote disease development. Fungicide applications are most effective when done at the proper time and before disease pressure is high.
Southern rust is active in central and eastern Kansas
Southern corn rust continues to spread in the southern part of the US and is now detected in four counties across central and eastern Kansas. The severity depends on the weather, and southern rust likes 90-degree days, warm nights, and high humidity. This article answers some frequently asked questions about managing southern rust in Kansas.
Tar Spot is active in five counties in northeast Kansas
Tar spot is active in corn fields across five counties in northeast Kansas. Now is the time to intensify scouting efforts. Fungicide applications are most effective when applied within a specific window of corn growth stage. The K-State Plant Disease Diagnostic Lab is offering free testing for tar spot during the 2024 growing season.