|Cercospora leaf spot of carrot|
|A carrot leaf showing cercospora leaf spot symptoms|
| Carrot leaf blight
Cercospora leaf spot
Cercospora leaf spot of carrot is a disease caused by the fungal pathogen Cercospora carotae. The fungus thrives in warm, humid conditions. It is often caused by diseased seeds or planting materials and promoted by poor air flow, low sunlight, overcrowding, improper soil nutrient and irrigation management and poor soil drainage.
Infested leaf has tan to brown spots with curled leaf margin and later on it withers. As the disease progresses, the leaflets turn yellow and also with curled margins. Spots on the leaf petioles, stems, and flower parts become elongated and have dark-brown color. On heavily infested plant, defoliation may occur.
Remove and destroy infected plants.
Practice crop rotation. Use diseased-free seeds or use resistant cultivars. Observe proper planting distances and maintain sanitation by removing a disposing of infected plant materials. Avoid working when plants are wet.
- ↑ a b c Cercospora leaf spot. Online Information Service for Non-Chemical Pest Management in the Tropics. Retrieved: 2010-08-24.
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|Carrot · Celeriac · Celery · Chervil · Coriander · Cumin · Dill · Fennel · Lovage · Parsnip · Parsley · Sweet cicely|
|Adverse conditions||Cavity spot · Stem crack · Forking · Phosphorus deficiency · Split roots|
|Diseases||Aster yellows · Bacterial blight of carrot · Bacterial soft rot · Black rot · Cavity spot · Cercospora leaf spot of carrot · Downy mildew · Powdery mildew · Crown rot · Leaf blight of fennel · Mosaic virus · Phytophthora blight · Pseudomonas syringae · Sclerotinia rot · Septoria leaf spot of celery · Septoria leaf spot of parsley · Violet root rot|
|Pests||Aphid · Carrot fly · Carrot weevil · Carrot-willow aphid · Celery fly · Potato rot nematode · Root-knot nematode · Sciarid fly · Silver Y moth · Swift moth|