• Stem canker was again the most prevalent disease recorded in the spring.

• Stem canker was recorded on all crops surveyed in the South East. As in 1999, the highest incidence within crops was recorded in the North where a mean of 48% plants were affected.

• PLRV was recorded in 2.5% crops and 0.2% plants.

• As in 1999, skin spot was recorded in crops from the East and South West & Wales only.

• Black leg was recorded in all regions except the Midlands & West.

Fig. 1 Incidence of potato disease - % crops affected

Fig. 2 Incidence of potato disease - % plants affected

Fig. 3 Regional incidence of potato disease - % crops affected

Fig. 4 Regional incidence of potato disease - % plants affected