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Great Plains | For white mold one wants to protect the bloom from infection. This cannot occur until R1 at the earliest.
Septoria brown spot & frogeye are normally showing up about R4/R5 or later.
An early disease could be pythium/damping off if the soil is saturated. Seed treatments would be the normal course of action to prevent root rot. I suppose one might apply a P Acid salt product as they are systemic, but not a low cost option.
Calcium nitrate like CalOx is a good option at full bloom for about$10/ac.Strengthens plant cells.
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Early soybean fungicide worth it?
