Septoria lactucae
leaf spot of lettuce
Ascochyta lactucae, Septoria lactucicola, Septoria consimilis
Worldwide
Widespread
2025-08-01
fungus
Korea
Main: lettuce
SEPTLA
Septoria lactucae spreads primarily through rain splash that moves spores from infected debris or nearby plants onto healthy leaves. It can survive on seed and wild hosts; however, most infections occur in wet conditions when spores are dispersed from contaminated crop residues.
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