Plant Pathology Department


Date of this Version



Copyright © 2014 The Board of Regents of the University of Nebraska on behalf of the University of Nebraska-Lincoln Extension. All rights reserved.


Extension Circular 1908 (EC1908).

Many species of plant parasitic nematodes affect Nebraska field crops. Some of the more common and/or damaging nematodes are described here. The extent of crop injury depends on the species present, their abundance, and other crop stresses. Diagnosis of nematode injury is difficult because most plant parasitic nematodes can’t be seen with the naked eye and the type and severity of symptoms can vary widely. Most nematodes cause general symptoms that are not diagnostic and may mimic symptoms caused by other biotic or abiotic problems, such as herbicide damage, nutrient imbalances, water stress, and insect feeding. It is also common for multiple species to occur in a single field, as most of them are native. Samples should be collected for nematode analyses to confirm diagnoses and determine management.