Fusarium Wilt
scouted July 10, 2024
- Background
- Soybeans were scouted at the R1 growth stage and yellow/brown discoloration of leaves, dieback, wilting, and root discoloration was observed in widespread patches of the field.
- Conclusion
- This issue was confirmed by the NC State Plant, Disease and Insect Clinic to be injury from Fusarium Wilt, caused by Fusarium oxysporum. Fusarium wilt often occurs in irregular patches in the field and symptoms are often first observed in hot and dry conditions. Symptoms can include interveinal chlorosis, premature defoliation, wilting, and root decay. In this environment, conditions have been hot and very dry, this could have synergized symptomology. Planting during optimal germination conditions for soybean emergence is important in limiting early infections by Fusarium species, along with seed treatments.
