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Rot often starts in the root point or as a belt around the upper part of the root.
First brown coloured and later, in a severe attack, black and wet.
In most cases the crown is not affected.
Small and retarded plants, bearded roots. After midsummer,
cysts can be seen on the rootlets using a magnifying glass.
Rot often at the crown of the root with black spreading out
onto the leaf stalks. May also start as black spots on the roots.
In severe cases the whole of the tops wilt and the root rots.
Tops are sometimes light green in colour. In severe infections
the tops are yellowish and the plants retarded. Roots are "bearded"
and if cut through in cross section the vascular system will be seen
to be brownish.
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