Charcoal rot

scouted Sept. 7, 2021

Scientific Name
Macrophomina phaseolina
Background
Soybeans in Lenoir county, variety P55A49X, were scouted and observed with 90% of the field being affected by shedding leaves and fruit.
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.
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