Charcoal rot
scouted Nov. 21, 2022
- Scientific Name
- Macrophomina phaseolina
- Background
- Soybeans in Halifax county, variety LS5909xfs and DG58XT30, were scouted and observed 90% of the field was affected by dieback and severe yield depression, which is widespread and spotty in DG. This site is dry. The two varieties were planted in a field separated by a path. One side as LS5909XFS (local) and the other was DG58XT30 (Dyna Grow). The Local beans are the very tall plants and the Dyna Grow are the shorter ones. Nearly the entire field of locals had a yield of only a few bushels per acre, the Dynagrows that were closest to the locals began to have yield reductions, but the other end of the Dynagrow field was excellent.
- Conclusion
- The issue was identified as charcoal rot of soybean, caused by Macrophomina phaseolina. It starts out with patches of stunted or wilted plants, while the infection can happen very early in the season, the symptoms usually appear after flowering.
- Resources
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- No resources have been added.
