List of lettuce diseases
This article is a list of diseases of lettuce (Lactuca sativa).
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 |
Fungal diseases
Fungal diseases | |
---|---|
Alternaria leaf spot | Alternaria sonchi |
Anthracnose | Microdochium panattonianum |
Bottom rot | Rhizoctonia solani |
Cercospora leaf spot | Cercospora longissima |
Damping-off, Pythium | Pythium spp. |
Damping-off, Rhizoctonia | Rhizoctonia solani |
Downy mildew | Bremia lactucae |
Drop (Sclerotinia rot) | Sclerotinia sclerotiorum |
Gray mold | Botrytis cinerea |
Phymatotrichum root rot (cotton root rot) | |
Powdery mildew | |
Rust | |
Septoria leaf spot | |
Southern blight | Sclerotium rolfsii |
Stemphylium leaf spot | Stemphylium botryosum |
Wilt and leaf blight |
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 |
Nematodes, parasitic
Nematodes, parasitic | |
---|---|
False root knot | |
Lesion | Pratylenchus spp. |
Needle | Longidorus spp. |
Root-knot | Meloidogyne spp. |
Spiral | |
Stunt | Melinius brevidens |
Phytoplasma, Viral and viroid diseases
Viral and viroid diseases | |
---|---|
Big vein | Lettuce big vein virus |
Calico | Alfalfa mosaic virus |
Lettuce dieback[1] | Lettuce necrotic stunt virus |
Internal rib necrosis | Lettuce mosaic virus |
Mosaic | Lettuce mosaic virus Bidens 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 phytoplasma Beet leafhopper-transmitted virescence phytoplasma |
Wilt | Broadbean wilt virus |
Yellow spot | Tobacco rattle virus |
Yellows | Beet western yellows virus |
Other | Sowthistle yellow vein virus |
References
- Common Names of Diseases, The American Phytopathological Society
- ^ "Lettuce Dieback". University of California Agriculture and Natural Resources.