Guava Root-Knot Nematode Damage
scouted Aug. 23, 2024
- Background
- Soybeans were scouted at the R5 growth stage and non-uniform stunted growth and dieback, root galling, wilt, and yellow leaf discoloration was observed in patches across the field.
- Conclusion
- This issue was confirmed by the NCDA to be injury from guava root-knot nematodes (M. enterlobii). Symptomology associated with root-knot nematodes in soybeans include non-uniform stunting, wilting, chlorotic patches, and galling found on the roots. In this environment damaging numbers of root-knot nematodes were recovered from the sample submitted. Selecting a resistant variety is the most cost effective preventative measure.
