Target spot
scouted Aug. 9, 2021
- Scientific Name
- Corynespora cassiicola
- Background
- Soybeans in Moore county, variety AG59XF0, were scouted and observed defoliation, dieback, browning, and yellowing between the veins. The site is marginal and sunny. The leaves on the bottom half of the soybean plants are starting to yellow. The margins of the leaves are turning brown.
- Conclusion
- The cause of disease was identified as Target spot, caused by Corynespora cassiicola. This is a common pathogen in the state, but losses associated with it are rare. Infection requires high humidity and long periods of high moisture with free water resting on tissue surfaces. Cultural practices like crop residue destruction, managing weed hosts, and a crop rotation schedule that excludes hosts for several years are important to limiting disease losses.
- Resources
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- No resources have been added.
