| Leaf blight of fennel | |
|---|---|
 |
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| Cercosporidium blight of fennel on dill | |
| Scientific Classification | |
| Kingdom: | Fungi |
| Phylum: | Ascomycota |
| Class: | Ascomycetes |
| Subclass: | Dothideomycetidae |
| Order: | Mycosphaerellales |
| Family: | Mycosphaerellaceae |
| Genus: | Cercosporidium |
| Species: | Cercosporidium punctum |
| Synonyms | |
| Cercosporidium blight Azosma punctum Delacr. 1860 |
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Symtpoms[]
The disease primarily affects older foliage. Affected leaf tips and stems turn brown to black in color and dry up. Examination of the stems and leaves show tiny, discrete, dark brown to black fungal patches. Early patches are less than one-sixteenth inch wide, and can be oval, circular or irregular in shape.[1]
If the disease is severe, the patches multiply and grow together resulting in an overall dark appearance and death of the foliage. If sufficient humidity and moisture occurs, a white crusty growth forms on top of the patches. The white crust is made up of clusters of the pathogen’s spores. Cercosporidium blight does not kill fennel plants, but can impact growth and result in a poor quality product.[1]
Prevention[]
None recommended.[1]
References[]
- ↑ a b c Koike, S. (2010). Vegetable diseases enhanced by rain. WesternFarmPress.com. Retrieved: 2010-09-09.
| Apiaceae troubles |
|
|---|---|
| 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 |