Physical Description
In peppers, raised brown spots that look like warts, sometimes appearing water-soaked
In brassicas (cabbage, broccoli, cauliflower, etc), infections start as small, dark specks on leaves. As the disease develops, numerous water-soaked leafspots appear. Leafspots remain small (0.125 inch in diameter). Older leafspots turn tan and may or may not have a purple border around them. Leafspots are visible from both the top and bottom sides of leaves.
Species & Taxonomy
- Kingdom:
- Phylum:
- Class:
- Order:
- Family:
- Genus Species:
- in brassicas: Pseudomonas syringae
- in lettuce, peppers & tomatoes: Xanthomonas campestris
Lifecycle
Plants Affected
Plants Unaffected
Geographical Range
Signs & Symptoms
Whole Plant
Leaves
Flowers
Fruit
Peppers
- raised brown spots that look like warts, sometimes appearing water-soaked
Roots/Tubers
How to Positively Identify
Treatment
Prevention & Control
Cultural Controls:
Habitat:
Temperature & Humidity:
Mulching & Cultivation Practices:
- Choose resistant varieties
- Follow a 3-year crop rotation of tomato family crops
- Pick off infected leaves
- switch to drip irrigation or soaker hoses for watering
- don’t touch the plants when wet
- Disinfect all cages and trellises or supports with bleach water (1 part bleach : 12 parts water)
Natural Enemies & Biological Controls
Insects:
Animals:
Reptiles:
Barriers
Traps
Sprays & Dusts
- Copper sprays can prevent the spread of this fungal disease
- Bordeaux Mix:
- combines copper sulfate and hydrated lime
- fungicidal & insecticidal
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