United Kingdom Information Product Development Technical Reference Sugar Beet Pests and Diseases Image gallery of Diseases

Diseases



Blackleg caused by Aphanomyces cochlioides:  Blackleg to the hypocotyl
Blackleg caused by Aphanomyces cochlioides
Blackleg caused by Aphanomyces cochlioides:  Effect of Tachigaren (left side with Tachigaren; right side without Tachigaren)
Blackleg caused by Aphanomyces cochlioides
Tracheomycosis:  (probably caused by Fusarium oxysporum)
Tracheomycosis
Blackleg caused by Phoma betae:    Blackleg at the hypocotyl
Blackleg caused by Phoma betae

Cercospora – leaf spots (Cercospora beticola):  First spots on the leaf
Cercospora – leaf spots (Cercospora beticola)
Cercospora - leaf spot (Cercospora beticola):  Cercospora - leaf spot (Cercospora beticola) A patch in the crop
Cercospora - leaf spot (Cercospora beticola)
Cercospora beticola:  Crop heavily attacked by Cercospora-leaf spot
Cercospora beticola
Cercospora beticola:   Cercospora-leaf spot lesion with typical red-brown margin
Cercospora beticola

Cercospora beticola:  Coalescens of the lesions
Cercospora beticola
Cercospora beticola:  Cercospora- leaf spot lesions (close-up)
Cercospora beticola
Cercospora beticola:  Black conidophores with conidia
Cercospora beticola
Ramularia beticola:  Crop heavily attacked by Ramularia leaf spot
Ramularia beticola

Ramularia - leaf spot (Ramularia beticola):  Lesions on single leaf
Ramularia - leaf spot (Ramularia beticola)
Ramularia beticola:  Sporulation, typical grey-white conidophores with conidia
Ramularia beticola
Powdery mildew (Erysiphe betae):  Grey-white mycelium on the leaf
Powdery mildew (Erysiphe betae)
Powdery mildew (Erysiphe betae):  Grey-white mycelium on the leaves
Powdery mildew (Erysiphe betae)

Powdery mildew (Erysiphe betae):  Grey-white mycelium on the leaf
Powdery mildew (Erysiphe betae)
Powdery mildew (Erysiphe betae):  Severe attack of leaves
Powdery mildew (Erysiphe betae)
Sugar beet rust (Uromyces betae):  Severe attack of leaves
Sugar beet rust (Uromyces betae)
Sugarbeet rust (Uromyces betae):  Pustles with uredospores
Sugarbeet rust (Uromyces betae)

Sugarbeet rust (Uromyces betae):  Aecidium (aecidiospores) on undersite of the leaf
Sugarbeet rust (Uromyces betae)
Phoma – leaf spot (Phoma betae):  Spots with large round spots showing concentric rings and black pycnidia
Phoma – leaf spot (Phoma betae)
Alternaria leaf spot (Alternaria tenuis):  Attack of foliage
Alternaria leaf spot (Alternaria tenuis)
Alternaria leaf spot (Alternaria tenuis):  Lesions on single leaves
Alternaria leaf spot (Alternaria tenuis)

Alternaria leaf spot (Alternaria tenuis):  Close-up of lesions
Alternaria leaf spot (Alternaria tenuis)
Downy mildew (Peronospora betae):  Dirty-grey to grey-violet cover on the bottom of the leaf
Downy mildew (Peronospora betae)
Phoma root rot on the upper part of the root (Phoma betae):   Phoma root rot on the upper part of the root (Phoma betae)
Phoma root rot on the upper part of the root (Phoma betae)
Phoma root rot on the upper part of the root (Phoma betae):   Phoma root rot on the upper part of the root (Phoma betae)
Phoma root rot on the upper part of the root (Phoma betae)

Phoma root rot on seed crop (Phoma betae):  Phoma root rot on seed crop (Phoma betae)
Phoma root rot on seed crop (Phoma betae)
Rhizoctonia root rot (Rhizoctonia solani):   Patches of wilting beets in the crop
Rhizoctonia root rot (Rhizoctonia solani)
Rhizoctonia root rot (Rhizoctonia solani):  Wilting of a single plant
Rhizoctonia root rot (Rhizoctonia solani)
Rhizoctonia root rot (Rhizoctonia solani):  First symptoms in the upper part of the beet
Rhizoctonia root rot (Rhizoctonia solani)

Rhizoctonia root rot (Rhizoctonia solani):  Severe rot, typical cracks on the root surface
Rhizoctonia root rot (Rhizoctonia solani)
Southern sclerotium rot (Sclerotium rolfsii):  Typical symptoms on the foliage
Southern sclerotium rot (Sclerotium rolfsii)
Southern sclerotium rot (Sclerotium rolfsii):  Symptoms on the beet (grey-white mycel and yellow to black sclerotia)
Southern sclerotium rot (Sclerotium rolfsii)
Violet root rot (Rhizoctonia violacea):   Violet root rot (Rhizoctonia violacea)
Violet root rot (Rhizoctonia violacea)

Violet root rot (Rhizoctonia violacea):  Severe root rot
Violet root rot (Rhizoctonia violacea)
Verticillium wilt (Verticillium albo-atrum):  Attack of only half of the leaf blade
Verticillium wilt (Verticillium albo-atrum)
Verticillium wilt (Verticillium albo-atrum) on seed crop:  Verticillium wilt (Verticillium albo-atrum) on seed crop
Verticillium wilt (Verticillium albo-atrum) on seed crop
Verticillium wilt (Verticillium albo-atrum):  Attack of only the half of the petioles
Verticillium wilt (Verticillium albo-atrum)

Scab (Actinomycetes):  Typical deformation on the beet root
Scab (Actinomycetes)
Bacterial leaf spot (Pseudomonas syringae pv. aptata):   Bacterial leaf spot (Pseudomonas syringae pv. aptata)
Bacterial leaf spot (Pseudomonas syringae pv. aptata)
Bacterial leaf spot (Pseudomonas syringae pv. aptata):   Bacterial leaf spot (Pseudomonas syringae pv. aptata)
Bacterial leaf spot (Pseudomonas syringae pv. aptata)
Bacterial leaf spot (Pseudomonas syringae pv. aptata) (close-up):  Bacterial leaf spot (Pseudomonas syringae pv. aptata) (close-up)
Bacterial leaf spot (Pseudomonas syringae pv. aptata) (close-up)

Crown gall (Agrobacterium tumefaciens):  Globular outgrowth on the upper part of the beet
Crown gall (Agrobacterium tumefaciens)
Rhizomania:  Infected beets, transgenic beet (left side) and non transgenic beet (right side)
Rhizomania
Virus yellows, mixed infection:  Beet yellows virus (BYV) and Beet mild yellowing virus (BMYV)
Virus yellows, mixed infection
Beet yellows virus (BYV):  Typical symptoms on a single plant with secondary attack by Alternaria
Beet yellows virus (BYV)

Beet yellows virus (BYV):  Beet yellows virus (BYV) symptoms on a single leaf including severe attack by Alternaria
Beet yellows virus (BYV)
Mosaic (beet mosaic virus=BtMV):  Typical pale green patches between the veins
Mosaic (beet mosaic virus=BtMV)
top