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Summer disease assessment

Brown rust risk map
Monitoring Regional Disease Risk
Winter Oilseed Rape Disease Survey: Summer 2018

Defra has carried out annual stratified surveys of diseases of commercially-managed winter oilseed rape since 1987. Between 80 and 100 randomly selected crops are assessed for symptoms of disease at three growth stages during the cropping year, at mid leaf production (December), stem extension (March) and pod ripening (June) and information about the agronomic practices associated with each crop are collected. The following report summarises the results of the survey carried out at pod ripening in 2018.

Incidence of diseases on the pods - % plants affected
Incidence of diseases on the stems - % plants affected * Please note – no long-term verticillium data available *
Regional incidence of diseases on the pods - % plants affected
Regional incidence of diseases on the stems - % plants affected