CropMonitor: Brown rust risk remains low

Farmers Weekly has teamed up with CropMonitor to bring the latest disease risk predictions across England and Wales.

At the Live Monitoring sites, crop growth stages range from before GS30 to GS31 (first node detectable). The most forward winter wheat crops on farm are reported to be at GS32, and, with leaf 3 emerging, T1 fungicide applications are starting to be applied

Septoria tritici

Visible Septoria levels vary from negligible to moderate, depending on location and in some cases variety. After a largely dry week in many areas, a low weather risk was recorded in most regions. The disease risk is typically moderate to low, but low for the most resistant varieties (rated 7 or higher on the HGCA Recommended List).

Yellow Rust

No yellow rust was seen in any of the Live Monitoring varieties at any site. However, a medium weather risk was recorded at over half of the weather stations in many regions, and in these areas the disease risk is high for very susceptible varieties and moderate for others that are susceptible. To the south-east and north-west the risk is a little lower.

Brown Rust

Brown rust was not detected at any of the Live Monitoring sites, and the disease risk continues to be low.

Mildew

Mildew has still only been found at one location (Telford), with slight to moderate symptoms present in most varieties. The weather risk was low in most areas this week and, with the exception of the north-west region, the overall risk is fairly low.

CropMonitor is a free online service by FERA, HGCA and Bayer CropScience. For the latest risk of wheat disease in your region, go to the dedicated webpage.

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