![](Soil%20rot%20rootlet%20C%20Clark.jpg)
Soil
rot in the root system (C. Clark, APS).
![](soil%20rot%20pox%20W%20Martin.jpg)
Sunken
lesions due to infection just before harvest (W. Martin, APS).
![](soil%20rot%20deformities%20W%20Martin.jpg)
Misshapen
root due to infection at early storage root
formation (W. Martin, APS). |
Diagnostic summary
-
fibrous roots have dark lesions
and are easy to break.
-
plants become stunted, leaves are smaller and pale or bronzed and early
flowering results.
-
lesions may form on stems in contact with soil. They are
dark, dry and scaby, and occasionally the plant can be girdled.
-
lesions on storage roots ("pox") are roundish, shallow, dry, dark
spots, usually with a scaby or cracked surface.
-
when infection occurs while the root is still growing,
deformities occur as the lesion restricts expansion. The root becomes
indented or constricted at the lesion.
-
roughening of the skin rather than discrete lesions can be
observed in some genotypes.
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Taxonomy
Economic
importance
Geographical
distribution
Symptoms
Morphology
Biology
and ecology
Host
range
Inspection
and diagnosis
Management
References
View full fact sheet
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