Downy mildew is becoming a more serious disease problem on many crops and control is becoming more difficult, in part due to the development of fungicide resistant strains of the pathogen.  The approval of this new fungicide from Syngenta will help control the disease in lettuce and herbs and also reduce the resistance risk as it introduces another mode of action against the pathogen.  Subject to the appropriate EAMU (label extension), Revus could also be very useful for the control of downy mildew in ornamentals, including Impatiens (which was first found in the UK by the STC team back in 2003) and which has since caused serious economic loss for the bedding plant industry.

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