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Insect and mite pests


Nutritional disorders

Environmental causes


Beneficial organisms

Nematodes are tiny worm-like animals.  Many species live in soils, but only a few are serious parasites of plant roots.  Parasitic nematodes generally have a wide host range; they are not specific to sweetpotato.


Three parasitic nematodes are included in this section. Below is the list of their common and scientific names with links to fact sheets.


Common name

Scientific name

Lesion nematode

Reniform nematode

Root-knot nematode

Pratylenchus spp.

Rotylenchulus reniformis

Meloidogyne incognita