Neocosmospora root or fruit rot
scouted Sept. 2, 2022
- Scientific Name
- Neocosmospora vasinfecta
- Background
- Soybeans in Pamlico county, variety AG48XF2, were scouted and it was observed that 70% of the field was affected by browning and yellowing, leaf spots,or fruit drop. The previous crop was corn. group 4.8 shedding leaves turning off before earlier group 4s. Foliar fungicide and fertilizer was applied. The soil is organic soil.
- Conclusion
- The issue was confirmed to be Neocosmospora stem rot, caused by the fungus Neocosmospora vasinfecta. Symptoms of Neocosmospora root and stem rot can include interveinal chlorosis on the foliage, the presence of small red fungal structures around the crown, and discoloration of the pith. These signs can resemble other stem diseases, especially red crown rot. As interveinal chlorosis progresses, lower leaves may begin to drop earlier than expected. Both the roots and pith may also show varying degrees of discoloration. https://cropprotectionnetwork.org/publications/scouting-for-soybean-stem-diseases
- Resources
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- No resources have been added.
