| Pseudomonas | |
|---|---|
| Halo blight | |
 |
|
| A bean leaf showing signs of halo blight | |
| Scientific Classification | |
| Kingdom: | Bacteria |
| Phylum: | Proteobacteria |
| Class: | Gamma Proteobacteria |
| Order: | Pseudomonadales |
| Family: | Pseudomonadaceae |
| Genus: | Pseudomonas |
| Species: | Pseudomonas amygdali |
| Pathovar: | Pseudomonas amygdali pv. phaseolicola |
Halo blight (Pseudomonas amygdali pv. phaseolicola) is a bacterial blight disease in legumes. It causes small brown spots on the leaves with a light coloured edge.
Identifying Features[]
Small brown spots surrounded by a yello 'halo' appear on the leaves. Pods appear wet when they develop. Plant growth is stunted and suffer reduced crop yield. Attacks are worst during prolonged wet periods.
Treatment[]
Remove and destroy affected plants.
Prevention[]
Rotate crops each season. Never soak seeds before sowing.
