Rust
scouted Oct. 22, 2021
- Scientific Name
- Phakopsora pachyrhizi
- Background
- Soybeans in Hyde county, variety DynaGro S62XT09, were scouted and observed 100% of the field was affected widespread by leaf spot, speckling, and stippling. This is in a test plot. Plants don't seem to be senescing like they should. The leaves are turning black and seed quality is poor. There seems to be some orange pustules on the underside of the leaves.
- Conclusion
- This issue was identified as Asian soybean rust, which is caused by the fungus Phakopsora pachyrhizi. Asian soybean rust is a soybean pathogen described for the first time in the Southern portion of North Carolina in 2005. Rust is uncommonly observed during critical growth stages in North Carolina. Heavily infected plants may produce fewer pods, fewer seeds per pod, and reduction in weight, resulting in yield losses.
- Resources
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- No resources have been added.
