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Australia

Lettuce septoria blight (Septoria leaf spot on lettuce)

Septoria lactucae

Symptoms of S. lactucae generally start on oldest leaves and consist of small, irregular chlorotic spots. Lesions enlarge, turn brown, dry out and may fall out giving the leaves a tattered appearance. Numerous fruiting bodies (pycnidia) develop with leaf spots. 

Pesticides
Acrobat
intensity: ★★★
Acrobat MZ 690
intensity: ★★★
Acrobat WDG
intensity: ★★★
Frenta 750 WG
intensity: ★★★
Manzate DF
intensity: ★★★
Penncozeb
intensity: ★★★
Penncozeb 750 DF
intensity: ★★★
Ridomil Gold MZ WG
intensity: ★★★
Rotam Milor 720 WP
intensity: ★★★
Unizeb Disperss 750 DF
intensity: ★★★
Zeemil 720 WG Systemic and Protective
intensity: ★★★
Zeemil MZB 720 WP Systemic and Protective
intensity: ★★★
Manzeb
intensity: N/A
Maxyl
intensity: N/A
Medley Mz
intensity: N/A
Metal-Man Mz 720
intensity: N/A