Crown rot
scouted Sept. 7, 2022
- Scientific Name
- Rhizoctonia sp.
- Background
- Soybeans in Camden county, variety AG 59XF0, were scouted and it was observed that 70% of the field was affected by leaf spot and speckling/stippling. These symptoms were widespread throughout the field.
- Conclusion
- This issue was identified as Rhizoctonia Crown rot. The disease can occur under various moisture conditions, preferring warm and moist soil. It is more prevalent can be increased by plant stress from herbicide or hail injury or the soybean cyst nematode (SCN). To manage Rhizoctonia crown rot, it is recommended to encourage seedling health with good agronomic practices and the use of high-quality seed. Avoiding or reducing plant stress, such as from herbicide injury and SCN infection, is crucial. Crop rotation and tillage may be beneficial where disease has been severe. Some seed treatment fungicides can reduce Rhizoctonia infection for a few weeks after planting. However, no commercial corn or soybean cultivars are fully resistant to this disease.
- Resources
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- No resources have been added.
