• The incidence of crops affected by Phoma leaf spot was the lower than the previous year with 90.0% affected compared to 97.0%. The proportion of plants affected was also lower than in the previous year with 36.0% affected, compared to 37.7%. Phoma was found in all regions.


• Light leaf spot was recorded in the Northern and Eastern regions only. National incidence was the same as the previous year with 7.0% crops affected. The proportion of plants affected was also similar with 1.2% affected compared with 1.3% last year.


• Alternaria was recorded in all regions except the Midlands & West. The incidence of Alternaria leaf spot was the same as the previous year with 16.0% crops affected. The highest incidence were recorded in the South Eastern and Eastern regions where 25.0% and 23.2% crops were affected respectively. Severity of the disease was low, with only trace levels found.


• The incidence of crops affected with Downy mildew was lower than in the previous year with 22.0% affected compared with 28.0%. The highest incidence of crops affected was recorded in the Eastern region (28.2%) and the lowest in the Midlands & West (12.5%). Downy mildew was present in all regions.


• Powdery mildew was found in all regions except the North. National incidence was higher than last year with 10.0% crops and 2.7% plants affected, compared to 4.0% crops and 1.7% plants. The severity of powdery mildew was also lower this year with only trace levels found, compared with 0.1% leaf area affected last year.


• Ring spot, Botrytis and white leaf spot were not found in any surveyed crop.

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