Location: Septoria tritici leaf blotch occurs more frequently in western and northwestern Ohio than in other regions of the state.
Time of attack: Lesions are first detected on the lower leaves in early spring. During extended periods of cool (60?70 F) wet weather, the disease will spread to the upper leaves of the wheat crop.
Management:
· Resistant varieties
· Crop rotation
· Till residues
· Foliar fungicide application when 1-2 lesions present on leaf below flag leaf.