September 4, 2025
Growers Urged to Focus on Yellow Rust Management This Autumn
Farmers are being advised to put extra focus on integrated yellow rust management this autumn, following a fall in resistance ratings for many winter wheat varieties.
The latest AHDB Recommended List (2026/27) shows that a significant number of varieties have seen their yellow rust resistance scores drop compared with the previous list. According to Mike Thornton, ProCam’s Head of Crop Production, this is largely due to the pathogen overcoming the YR15 plant resistance gene, with some varieties losing as many as 4–5 points on the 1–9 scale.
“With little change expected in the range of varieties available this autumn, it means growers need to look carefully at other ways of reducing the risk from yellow rust,” says Mike. “That’s especially important in case spring fungicide applications are delayed.”
Building resilience from the start
Yellow rust can develop quickly in the right conditions, so proactive steps in autumn are key. While drilling date has a role to play – with later-drilled crops often more susceptible – Mike explains that plant health and resilience are just as important.
“Plants under stress are more vulnerable to yellow rust,” he says. “That’s why autumn nutrition is so vital. Getting phosphate (P) and potash (K) levels right will encourage strong root systems, giving plants better access to water and nutrients. Soil testing is an important first step, both to measure nutrient levels and to assess how much of those nutrients are actually available to the plant.”
He also notes that low soil temperatures can restrict phosphate availability, while acidic soils can lock it up.
“If that’s the case, a pre-emergence application of LibPhos can help free up soluble phosphate for uptake.”
Support through biostimulants
To further support rooting and resilience, Mike suggests considering biostimulant applications during the autumn.
· Zodiac, a seaweed-based biostimulant
· Incite, a pidolic acid and phosphite biostimulant
“These are relatively low-cost options that can pay back quickly, particularly as they can be tank-mixed with certain aphicides,” Mike explains. “If you’re already running through the crop with the sprayer, it makes sense to maximise the return on that pass.”
Don’t be complacent
“Even if you farm in an area that didn’t see problems with reduced resistance ratings last year, it’s important to stay ahead of the game,” Mike adds. “By taking steps now to build stronger, more resilient crops, growers will be better placed to keep yellow rust in check and protect yields.”
For tailored advice on managing yellow rust risk this autumn, speak to your local ProCam agronomist. Our team is here to help you build stronger, more resilient crops for the season ahead.
