Lesion nematodes
scouted July 25, 2024
- Scientific Name
- Pratylenchus sp.
- Background
- Soybeans in Beaufort County were scouted, and it was observed that 10% of the field was affected by browning and yellowing between the veins, root rot, and wilting in patches around the field.
- Conclusion
- This issue was identified as Soybean lesion nematode, Pratylenchus spp. These nematodes feed by lysing, or breaking open, cells of the roots, forming cavities. This allows them to migrate intracellularly to continue feeding on healthy tissue. Necrotic lesions can be observed on the root as a result of the damage caused by feeding and movement. When populations are low, above-ground symptoms may not be present, but when populations are high, plants appear stunted, suffer from water and nutrient deficiencies, and eventually dieback.
- Resources
