The perfect storm for yellow rust

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Don’t cut back on T0 sprays to save costs, is the advice from leading off-patent manufacturer Life Scientific.

Reports of yellow rust in wheat crops means growers should be planning both preventive and curative control in their T0 sprays.

Getting on top of yellow rust early is crucial to avoid losing valuable margin and can be achieved in a very cost-effective way, says Ruth Stanley UK & IE country manager for Life Scientific.

“Protecting and maintaining green leaf area for as long as possible with a well planned fungicide programme is essential, as allowing any disease to take hold reduces the crop’s photosynthetic capacity, increasing the likelihood of earlier senescence and lower yields.”

“It is well worth remembering that yield losses of 40–50% can often occur in untreated yellow rust susceptible wheat varieties.”

Don’t lose yield early in the season

Ruth Stanley

“Wheat crops generally established well last autumn and are showing great potential so it does not make sense to start losing yield this early on in the season – especially when control can be achieved very cost-effectively. ”

“Most wheat crops will be approaching T0 at the end of March or beginning of April with the exception of some early drilled crops or varieties.”

“Fortunately the yellow rust pathogen remains sensitive to azoles and tebuconazole is very effective at knocking out any early yellow rust infection, but also preventing the onset of disease,” she says.

“If there are no pustules visible yet, they are on their way.”

Zonor, from off-patent manufacturers Life Scientific contains 250g/l tebuconazole and provides a cost-effective option for yellow rust control.

“Even a 50% dose of Zonor provides enough azole to prevent disease building and yield loss before the T1 timing.”

Pay attention to ratings

Mrs Stanley advises paying attention to varietal rust ratings. “Prioritise spraying susceptible varieties rated 3 or 4, but varieties with higher Recommended List ratings cannot be ignored, especially if it is based on adult resistance, which may not kick-in until late in the season. “

“If disease establishes early, it can cause significant damage before adult resistance takes effect, so needs controlling.”

Life Scientific is able to offer off-patent products to agronomists and growers faster based on the company’s unique scientific concept to reverse engineer a product from the original to produce a product accepted as the same by the regulatory authority.

For more information on Zonor or any other products in the Life Scientific portfolio please visit the Life Scientific website https://lifescientific.com/products/

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About Author

Editor of Agronomist and Arable Farmer as well as responsibility for the Agronomist and Arable Farmer and Farm Business websites. After 17 years milking cows on the family farm John started writing about agriculture in 1998 and has since written for a variety of publications and has developed a wide circle of contacts within the industry. When not working John is an avid follower of Stoke City.