With this year’s harvest of soybeans delayed beyond what is considered an ideal window of time, the opportunity for diseases to infect seed pods and in some instances, to the seed itself, was greatly increased. Across the state and the north central region, seed suppliers have reported that this year’s crops of seed soybean are frequently testing positive for the Diaporthe fungus (Phomopsis seed decay), which is resulting in lower than normal germination rates of seed. Seed decay is characterized by cracked, shriveled seed with white chalk-colored mold on the seed surface.
Iowa State University
Stoetzer, Ethan and Mueller, Daren S., "Should You Use a Fungicidal Seed Treatment on Low-Quality Soybean Seed?" (2018). Integrated Crop Management News. 2517.
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