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Bacterial Leaf Streak Reports (07/16/20)

Reports of bacterial leaf streak (BLS) in fields has increased in the past week (Figure 1).

Reports of bacterial leaf streak (BLS) in fields has increased in the past week (Figure 1). The severe thunderstorms over the past couple weeks has likely driven this disease to appear more frequently in fields (Figure 2). The IPM scouts documented BLS in 20% of the fields scouted during July 6 to July 10 with field incidence ranging from 2% to 48%. At this point in the growing season, it is important to understand that BLS does not respond to fungicides applied for Fusarium head blight (FHB), whereas fungal leaf spots are suppressed by fungicides used for FHB.

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Andrew Friskop

Extension Plant Pathology, Cereal Crops

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