Curtobacterium flaccumfaciens pv. flaccumfaciens
Figure 1 – Wilting or flaccid leaves, interveinal chlorosis and necrosis on upper and lower leaf surfaces; small water-soaked areas may be visible on lower surface.
Figure 2 – Necrotic areas may become more golden brown with age and water-soaked areas are more difficult to detect, dead leaves may remain attached to plants.
Figure 3 – Elongated, water-soaked and necrotic lesions may form on stems, petioles and occasionally pod sutures.
- Infected seed, infested debris and volunteers from previous seasons
- Rainstorms, hail damage and sprinkler irrigation
- Warm temperatures with daily highs less than 32°C [90°F]
H.F. Schwartz, Colorado State University