The Blightwatch alert system, hosted by AHDB and the MET Office, has displayed red warnings since 11 June – indicating the highest level of blight threat – just as many crops are reaching the crucial rapid canopy growth stage.
Red alerts have been issued in England for Lincolnshire, Yorkshire, Lancashire, East Anglia and across the West Midlands.
In Scotland, fewer warnings have been issued but indicate that the same urgency and tightening of the blight programme should be a priority for growers in Angus and Ayr, and also in Ceredigion in Wales.
A prolonged period of hot, dry weather through much of April and May meant planting took place in good conditions and the disease threat remained low.
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