NDSU Extension Plant Pathologist Michael Wunsch says irrigated fields had the most problems with white mold last year. “In my geography, a lot of the dryland producers didn’t seem to have that many problems, but the irrigated producers had a bad year.” The temperature swings that led to 70-degree weather mid-summer boosted white mold growth. When it comes to managing white mold, droplet size is key. “Fine droplets give tremendous coverage on the top of the canopy, but dense droplet size helps penetrate the canopy when there’s more coverage.”
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