Flooding causes problems in corn and soybean plants as well. Saturated soils along with moving water can cause lodging because the roots do not have a solid structure to hold on to in order to stay upright.
"The longer an area is flooded, the more damage it will cause," said Scheidt.
If the weather remains humid after the rains have ceased, it is more likely ear rot on corn will occur. If the humidity is less dense and the air is drier, there is a better chance of not developing diseases.
"If a field is underwater and is going to be harvested, it should be harvested as soon as it is ready and the combine settings should be adjusted to allow less trash and sediment to stay in the combine. Unfortunately, there is no fungicide producers can apply to seed after it is harvested and goes into the grain bin to eliminate funguses already present on the seed," said Scheidt.
Some insect threats have slowed with the increased rain. Grasshoppers, spider mites and thrips are less of a threat in wet conditions.
Pod worm, also known as corn earworm, and bean leaf beetle feeding are not affected by wet conditions and still need to be scouted. Threshold levels for foliage feeding on soybean are 30% defoliation before bloom and 20% defoliation during and after bloom.
"Now is the time to be scouting regularly for pod feeders such as pod worms. Pod worms are rapid pod feeders and can destroy much of a field in one night; threshold levels for pod worm in soybean are 1 per foot," said Scheidt.
Source: MU Extension