Unlike the weather in recent years, this spring has been wet so far. There is a lot of moisture in the soil, which affects corn and soybean planting. Soybean diseases are affected by planting dates and planting conditions. Early or delayed planting may increase, reduce, or not affect a soybean disease, depending on when the disease infects soybean and soil conditions after planting. The table below summarizes how planting dates may affect major Iowa soybean diseases. Knowing this information can help you make planting decisions and anticipate what to look for during crop scouting.