| Date | 1883 |
| Author | Wakker |
| Contribution | Reported the bacterial causation of Yellow Disease in hyacinths. |
| Reference | Lechevalier |
| Notes | J. H. Wakker. Showed that the agent, a yellow bacterium, could be transmitted by inoculation of the leaf. Impact limited because of publication in Dutch. |
| Category | Causation |
| Pathogen Class | Bacteria |
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