



Fungicide Resistance in the

Cercospora Leaf Blight and Purple

Seed Stain Pathogen of Soybean USB Outreach Webcast July 2015



By Paul P. Price, III (Trey), Ph.D.

Assistant Professor

LSU AgCenter

Macon Ridge Research Station

Phone: 318-435-2157

Email: PPrice@agcenter.lsu.edu

Watch Presentation (22 min 28 sec)

for PC, Mac, and Mobile Devices | for iPhone Subscribe to PMN

Note: For the best viewing experience on your PC, please use Google Chrome. For the best iPad viewing experience, you will be prompted to download the free Articulate Mobile Player app. Summary: Fungicide resistance in soybean production has been a growing concern, particularly since the discovery of strobilurin-resistant Cercospora sojina (frogeye leaf spot). Another Cercospora species (kikuchii) that causes Cercospora leaf blight and purple seed stain has followed suit in Louisiana. The disease has become a persistent issue in the Gulf-South, and is a growing threat to soybean producers in the United States. This presentation will help producers, consultants, industry, and other stakeholders correctly identify Cercospora leaf blight and bring awareness to fungicide resistance issues in soybean production, particularly in areas where fungicides are routinely applied in attempts to prevent disease. Disease management and fungicide resistance mitigation options are also presented. By the end of this web cast, the user will know more about the symptoms, yield loss, life cycle, and fungicide efficacy/resistance associated with Cercospora leaf blight, and be prepared to employ management strategies.

Responsibility: United Soybean Board (USB) farmer-leaders develop and maintain partnerships with U.S. land grant universities and U.S. ag-focused research organizations such as the Plant Management Network to increase the transfer of checkoff-funded applied and practical production research information to U.S. soybean farmers. USB neither recommends nor discourages the implementation of any advice contained herein, and is not liable for the use or misuse of the information provided.



All presentations published on The Plant Management Network reflect individual views of the author/presenter(s) and are not an official position of The Plant Management Network or the author/presenter(s)' affiliated institutions, companies, or organizations. No endorsement of products or companies, institutions, or organizations is intended, nor is criticism implied of those not mentioned. Individuals using agricultural products or any products referenced by The Plant Management Network or its partners, sponsors, or advertisers, should ensure that the intended use complies with current regulations and laws, as well as conforms to the product label.





