Defra has published a Plant Pest Factsheet on Monitoring and control of the potato brown rot bacterium in irrigation water. This follows findings of Ralstonia solanacearum in river water in parts of Cambridgeshire in 2016. The factsheet can be found here – https://planthealthportal.defra.gov.uk/assets/factsheets/irrigation-guidelines-factsheetformat-2017-final.pdf
