Northern corn leaf blight is an annual threat in cornfields from the Midwest to the Atlantic Coast, wherever environmental conditions are met. It spreads quickly from south to north, riding hurricane winds to infect new areas.
You’ve no doubt heard a lot of talk about instances of widespread injury to non-dicamba-tolerant soybeans. Many farmers have reported fields with distinct dicamba symptomology, uniformly visible across fields. Weed scientists and university extensions have been investigating this issue and looking for possible explanations for what is causing in-crop dicamba to apparently move beyond labeled buffer zones. These experts believe that, under certain conditions, volatilized dicamba is likely becoming “trapped” in the air, where it can then move to distant fields.
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Soybean white mold is an annual threat in the northern United States (north of Interstate 70) from Nebraska to the Atlantic Coast, though it may appear anywhere when conditions are right.
Timely, preventive action is necessary to maximize yield in the presence of white mold. Geographic location is only one piece of the puzzle. Also consider spring climate, planting practices, soybean variety, microclimate and field history when weighing the potential of white mold development.