• Although high, Phoma leaf spot incidence was lower than in the previous year with 70.0% crops and 24.2% plants affected. Phoma leaf spot was found in all regions, with the lowest incidence (40.9% crops and 4.9% plants affected) recorded in the northern region while the highest incidences recorded in the East and South East. This regional trend is similar to that seen in previous years.


• Incidence of alternaria leaf spot (50.0% crops and 5.6% plants affected) was higher than in the previous year. Alternaria leaf spot was found in all regions.


• Downy mildew incidence (74.0% crops and 18.6% plants affected) was lower than in the previous year. Downy mildew was found in all regions, with the lowest incidence of 42.9% crops and 6.3% plants found in the South West.


• Powdery mildew was found in the East, Midlands & West and South East only. National incidence was slightly higher than last year at 7.4% crops affected.


• White leaf spot, light leaf spot, ring spot and botrytis were not found in any region.

Incidence of diseases on the leaf - % crops affected

Incidence of diseases on the leaf - % plants affected

Regional incidence of diseases on the leaf - % crops affected

Regional incidence of diseases on the leaf - % plants affected