Ramularia spotting on leaves
The barley disease ramularia is potentially resistant to three key fungicide groups according to recent findings in Germany, which could be a warning to UK growers about the threat of resistance developing in this country. Resistance testing in southern Germany by the agrochemical group Bayer has confirmed the presence of two new mutations. One has an effect on the performance of SDHI fungicides, and another affects azole fungicides. Resistance in ramularia to a third group of fungicides, the strobilurins, has […]
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