 The areas you'll see it show up first and the worst are high pH, high carbonate, and high salt areas, which limit uptake by the plant, causing chlorosis or yellowing of the leaves. Selecting a good soybean variety that can handle IDC is the most cost-effective way to combat IDC. This is an important time to scout for white mold in fields that have had a history of problems. The most common mistake I see people make when scouting for white mold is the misidentification of bird's nest fungi for white mold apothecia.