Flooding in a field prior to planting may lead to “fallow syndrome” in the crop due to a decrease in soil microbial communities.

Phytophthora root rot (PRR) is common in soybean fields and causes a wet, soft rot of the seed or seedling tissue.

Northern corn leaf blight (NCLB) is caused by the fungus Exserohilum turcicum and may cause significant yield losses when moderate temperatures and long periods of dew or rain prevail.