Wheat growers are being warned to be extra vigilant for signs of yellow rust this spring, even where varieties with seeminglygood disease resistance ratings are being grown.New yellow rust races found following the testing of samples by the UK Cereal Pathogen Virulance Survey (UKCPVS), sent in during 2019, appear to confirm what many already suspected, and add to the complexity of existing, highly diverse rust populations.While work continues to assess which varieties are most at risk from the 10 new strains identified, there is every reason to be wary and not rely on the resistance ratings given to popular variety choices.
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