Tag: bacterial leaf blight

• Question of the Week – Bacterial Leaf Blight

  

  What caused the irregular necrotic spots on this mustard? These irregular spots are a symptom of bacterial leaf blight (Pseudomonas cannabina pv. alisalensis). This bacterial disease of brassicas is most serious on mustard and turnip. Bacterial leaf blight typically appears in the fall or spring and can spread to healthy plants through splashing rain. This…

  Justin Ballew

  October 1, 2026

  Question of the Week

  bacterial blight, bacterial leaf blight, Disease, mustard, Question of the Week, turnip