Keep fungicide rates high to fight SDHI resistance

摘要

Cereal growers are being urged to keep their fungicide rates up this season to prevent resistance developing to the key group of SDHI products.Strains of wheat's most damaging disease, septoria, were found to be resistant to SDHIs in Ireland last year, sparking fears these fungicides could become less effective.Andreas Mehl, fungicide resistance expert at agrochemicals giant Bayer, advises that growers need to adhere to advice from experts to keep these fungicides effective.His three-point guidance is to keep fungicide rates high, use SDHIs no more than twice in a season and use multisite fungicides early in the season to prevent resistance developing.