By Blake Jackson
Wheat producers are facing potential threats from two major diseases this season: Fusarium Head Blight (FHB) and Stripe Rust.
Fusarium Head Blight (FHB):
- The U.S. Wheat and Barley Scab Initiative (USWBSI) is hosting a free webinar on March 13th to address FHB management, focusing on fungicide applications.
- Registration is required for the 2-hour webinar, which offers CCA credits.
- FHB can significantly impact wheat by causing yield loss, reduced test weight, and diminished seed quality.
Stripe Rust:
- Early detection of Stripe Rust is crucial, with confirmed cases already reported in Louisiana this year.
- While the disease cannot survive Missouri winters, spores can be transported from southern regions, posing a potential threat.
- Early infection before flag leaf emergence can cause significant yield losses, especially in susceptible wheat varieties and under favorable conditions.
- Watch for characteristic yellow to orange stripes on leaves, indicating potential Stripe Rust infection.
Management Strategies:
- If Stripe Rust is detected in your area, consider fungicide application for susceptible wheat varieties, especially if weather forecasts favor the disease.
- Fungicide application at flag leaf emergence is crucial for effective control, potentially requiring an earlier application than usual for FHB.
- A second fungicide application might be necessary in some cases.
- Remember, fungicide efficacy lasts for approximately 21-28 days, and new growth remains unprotected after application.
- Consult wheat fungicide efficacy charts on the Crop Protection Network for guidance.
- Submit symptomatic wheat plants to the MU Plant Diagnostic Clinic for disease confirmation.
By staying informed and taking proactive measures, wheat producers can mitigate the risks associated with FHB and Stripe Rust, safeguarding their crops and ensuring a successful harvest.
Photo Credit: gettyimages-ygrek
Categories: Missouri, Crops, Wheat