Fusarium Wilt
scouted Aug. 14, 2024
- Background
- Soybeans were scouted at the V5-7 growth stage and yellow/brown discoloration of leaves, dieback, and wilting was observed in strips along rows across 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 the soil texture is very sandy, 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.
