Pythium root rot and Fusarium crown rot
scouted July 16, 2025
- Background
- Soybeans were scouted in Currituck county and it was observed that despite the deer feeding damage having been above the cotyledonary node, the plants were not regrowing. When pulling out plants, necrosis and flat spots in the roots were observed. It's the third time in 5 years the grower tries to raise a crop of soybeans there, the first time thew grew a few inches and then all died, the second time there was growth but very poor vigor. There was corn planted there last year. Some of the farm is affected by flooding but there is work being done on drainage improvements.
- Conclusion
- The issue was identified as Pythium root rot and Fusarium crown rot. Both Pythium and Fusarium cause soybean seedling diseases, especially with wet conditions shortly after planting. These are more prevalent in poorly drained or compacted soils. Improving soil drainage may reduce stress and risk of infection.
- Resources
