This article is a list of diseases of beets (Beta vulgaris), a plant grown for its edible taproot and leaves.
| Bacterial diseases | |
|---|---|
| Bacterial blight | Pseudomonas syringae pv. aptata |
| Bacterial pocket | Xanthomonas beticola |
| Bacterial soft rot | Erwinia carotovora subsp. carotovora |
| Bacterial vascular necrosis and rot | Erwinia carotovora subsp. betavasculorum |
| Crown gall | Agrobacterium tumefaciens |
| Silvering disease | Curtobacterium flaccumfaciens pv. betae = Corynebacterium betae |
| Fungal diseases | |
|---|---|
| Alternaria leaf spot | |
| Anthracnose | Colletotrichum dematium |
| Aphanomyces root rot (black root) | Aphanomyces cochlioides |
| Black wood vessel | Pythium irregulare |
| Cercospora leaf spot | Cercospora beticola |
| Charcoal rot | Macrophomina phaseolina |
| Choanephora rot | Choanephora cucurbitarum |
| Damping-off, black leg, black root and seedling blight | Aphanomyces cochlioides |
| Downy mildew | Peronospora farinosa |
| Fusarium yellows | Fusarium oxysporum |
| Fusarium yellows and root rot | Fusarium oxysporum f.sp. betae (Texas isolates) |
| Leaf gall (beet tumor, or crown wart) | |
| Phoma leaf spot and root rot | Phoma betae |
| Phymatotrichum root rot (cotton root rot) | |
| Phytophthora wet rot | Phytophthora drechsleri |
| Powdery mildew | |
| Pythium root rot | |
| Ramularia leaf spot | Ramularia beticola |
| Rhizoctonia foliar blight, crown and root rot | Rhizoctonia solani |
| Rhizopus root rot | |
| Rust | Uromyces betae |
| Sclerotinia crown & root rot | Sclerotinia sclerotiorum |
| Seedling rust | Puccinia subnitens |
| Slime molds | Physarum cinereum |
| Southern blight (Sclerotium root rot and stem rot) | Sclerotium rolfsii |
| Stemphylium leaf spot | Stemphylium botryosum |
| Storage rots | Botrytis cinerea |
| Verticillium wilt | Verticillium albo-atrum |
| Violet root rot | Helicobasidium brebissonii |
| Nematodes, parasitic | |
|---|---|
| Beet cyst nematode | |
| Clover cyst nematode | |
| False root-knot nematode | |
| Lesion nematodes | Pratylenchus spp. |
| Needle nematodes | Longidorus spp. |
| Potato rot nematode | |
| Root-knot | Meloidogyne spp. |
| Stem and bulb nematode | |
| Stubby-root nematodes | Paratrichodorus spp. |
| Viral diseases | |
|---|---|
| Alfalfa mosaic | genus Alfamovirus , Alfalfa mosaic virus (AMV) |
| Beet curly top | genus Hybrigeminivirus , Beet curly top virus (BCTV) |
| Beet distortion mosaic | genus ?, Beet distortion mosaic virus |
| Beet leaf curl | genus Rhabdovirus , Beet leaf curl virus (BCLV) |
| Beet mild yellows & Beet western yellows | genus Luteovirus , Beet western yellows virus (BMY) |
| Beet mosaic | genus Potyvirus , Beet mosaic virus (BtMV) |
| Beet yellow net | genus Luteovirus , Beet yellow net virus (BYNV) |
| Beet yellows | genus Closterovirus , Beet yellows virus (BYV) |
| Cucumber mosaic | genus Cucumovirus , Cucumber mosaic virus (CMV) |
| Lettuce infectious yellows | genus Closterovirus , Lettuce infectious yellows virus (LIYV) |
| Rhizomania | genus Benyvirus , Beet necrotic yellow vein virus (BNYVV) (fungal vector: Polymyxa betae) |
| Beet savoy | Suspected virus |
| Beet yellow vein | Suspected virus |
| Phytoplasmal and sprioplasmal diseases | |
|---|---|
| Beet latent rosette | Phytoplasma |
| Yellow wilt | Spiroplasma |
| Miscellaneous diseases and disorders | |
|---|---|
| Heart rot | Boron deficiency |
| Scab | Streptomyces spp. |