Bacterial blight of sugar beet

Bacterial blight of sugar beet (Pseudomonas syringae pv. aptata) is a commonly occuring disease, but is usually not of economic importance. Some rhizomania-resistant varieties have shown increased susceptibility to ''P. s. pv. aptata''. Symptoms can be easily confused with those of beet cercospora disease. The host range includes Beet, chard, beans, aubergine, spinach, lettuce, and pepper.

Symptoms
Leaves show circular to irregular leaf spots, which have a tan centre with a dark margin. Disease also shows on leaf edges. These spots later coalesce causing the leaves to have a ragged appearance.

Control
No effective field controls have been developed.