List of lettuce diseases
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This article is a list of diseases of lettuce (Lactuca sativa).
Contents |
[edit] Bacterial diseases
| Bacterial diseases |
|
|---|---|
| Bacterial leaf spot and head rot | Xanthomonas campestris pv. vitians |
| Bacterial soft rot | Erwinia carotovora Pseudomonas marginalis |
| Corky root | Rhizomonas spp. R. suberifaciens |
| Varnish spot | Pseudomonas cichorii |
[edit] Fungal diseases
| Fungal diseases |
|
|---|---|
| Alternaria leaf spot | Alternaria sonchi |
| Anthracnose | Microdochium panattonianum = Marssonina panattoniana |
| Bottom rot | Rhizoctonia solani Thanatephorus cucumeris [teleomorph] |
| Cercospora leaf spot | Cercospora longissima |
| Damping-off, Pythium | Pythium spp. P. ultimum |
| Damping-off, Rhizoctonia | Rhizoctonia solani |
| Downy mildew | Bremia lactucae Plasmopara lactucae-radicis |
| Drop (Sclerotinia rot) | Sclerotinia sclerotiorum S. minor |
| Gray mold | Botrytis cinerea Botryotinia fuckeliana [teleomorph] |
| Phymatotrichum root rot (cotton root rot) | Phymatotrichopsis omnivora = Phymatotrichum omnivorum |
| Powdery mildew | Erysiphe cichoracearum |
| Rust | Puccinia dioicae = P. extensicola var. hieraciata |
| Septoria leaf spot | Septoria lactucae |
| Southern blight | Sclerotium rolfsii Athelia rolfsii [teleomorph] |
| Stemphylium leaf spot | Stemphylium botryosum Pleospora tarda [teleomorph] |
| Wilt and leaf blight | Pythium tracheiphilum |
[edit] Miscellaneous diseases and disorders
| Miscellaneous diseases and disorders |
|
|---|---|
| Brown stain | Physiological, excess CO2 |
| Russet spotting | Physiological, excess ethylene |
| Tipburn | Physiological, Ca** deficiency and high temperature |
[edit] Nematodes, parasitic
| Nematodes, parasitic |
|
|---|---|
| False root knot | Nacobbus aberrans |
| Lesion | Pratylenchus spp. |
| Needle | Longidorus spp. |
| Root-knot | Meloidogyne spp. |
| Spiral | Rotylenchus robustus |
| Stunt | Melinius brevidens Tylenchorhynchus spp. |
[edit] Viral and viroid diseases
(Also mycoplasmalike organism [MLO])
| Viral and viroid diseases |
|
|---|---|
| Big vein | Lettuce big vein virus |
| Calico | Alfalfa mosaic virus Tobacco ringspot virus |
| Internal rib necrosis |
Lettuce mosaic virus |
| Mosaic | Lettuce mosaic virus Biden mosaic virus |
| Necrotic yellows | Lettuce necrotic yellows virus |
| Ring necrosis | Presumed viral agent (not identified) |
| Rusty brown discoloration | Accentuated by lettuce mosaic virus |
| Speckles | Lettuce speckles virus and beet western yellows virus |
| Stunt | Beet yellow stunt virus |
| Virescence | Aster yellows MLO Beet leafhopper-transmitted virescence MLO |
| Wilt | Broadbean wilt virus
Tomato spotted wilt virus |
| Yellow spot | Tobacco rattlevirus |
| Yellows | Beet western yellows virus |
| Other | Sow thistle yellow vein virus |
