
These are worms which inhibit growth by attacking plant roots.
There are several types : Cyst eelworms : which pierce the roots creating galls which protect them. Ectoparasitic eelworms : these may carry viral deseases resulting in yellowing of foliage from the base up. Root-lesion eeelworms : these build nests which cause canker in the roots causing yellowing of foliage and possible fungal development.
Treatment requires removal of yellowing leaves and spraying of remaining foliage with a parathion based wash, plus mixing nematicides with the soil which should be prevented from excess wetness.
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