Europe, UK, Ireland, Pests and Diseases, Production/Agronomy, Studies/Reports

Keeping one step ahead of tuber blight: Experts in Great Britain provide latest results and analysis

The aggressive and fit new blight strains 37_A2 and 36_A2 have been detected as tuber blight in stored potatoes in Great Britain. The latest results and analysis will help the sector keep one step ahead on how to best manage this latest threat. Of the genotyped batches of tuber blight samples typed in the storage season to date,  the new genotype 37_A2  has been confirmed  in six samples, and 36_A2 from two,  reveals David Cooke of the James Hutton  Institute. Other samples have identified  nine outbreaks of  6_A1, one of 13_A2 and one ‘Other’ genotype. Of the 30 batches, 22 have been from crops grown in England, four from Scotland and four from the Netherlands (which were intended for planting as seed). He reminds growers and their advisers that a report from Wageningen University in June 2017 indicated the reduced sensitivity of the 37_A2 lineage to fluazinam, an  active which has formed part of the management of tuber blight late in the potato growing season. More

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