CropMonitor: Moderate septoria risk in south and east

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 ranged mainly from tillering to GS31 (first node detectable), with a similar range of winter wheat growth stages reported on farm. T1 applications will shortly be due, once leaf three emergence is under way.

Septoria tritici

Visible septoria levels on fully expanded leaf layers vary from negligible to moderate, depending on location and to a lesser extent variety. A low weather risk was recorded at most stations across all regions, with the overall disease risk currently moderate in the South and East, but relatively low further North and West.

Yellow rust

No yellow rust was found in any variety at any of the live monitoring sites. A medium weather risk was recorded at more than half of the weather stations in nearly all regions, and in most areas the disease risk continues to be high for very susceptible varieties (rated 4 or less on the HGCA Recommended List) and moderate for others that are susceptible.

Brown rust

Brown rust was not detected at any of the live monitoring sites. The disease risk at this stage is very low.

Mildew

Mildew was seen at just one of the sites (Telford), with symptoms now present in all but one variety. The weather risk in most areas continues to be low, and so does the overall disease risk, but crops in high-risk situations should be monitored.

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.