Flooding has been extensive in several areas of Iowa this spring. In some cases, stored grain has been affected by flood waters. Land application of flood adulterated grain as a nutrient source for a future crop may be an option for some. See the Iowa Dept. of Natural Resources (IDNR) and Iowa Dept. of Agriculture and Land Stewardship (IDALS) publication for Proper Management of Flooded Grain and Hay. That publication states “Farms disposing of spoiled grain and feed on their own property can land apply damaged grain at the following application rates: 146 bu corn/acre and 50 bu soybean/acre”. The publication also states that “Spoiled grain needs to be incorporated/disked into the ground the same day of application to prevent poisoning migrating waterfowl and other birds.” This ICM News article discuss the implications for nutrient supply from land applied corn and soybean grain.
Iowa State University
Sawyer, John E. and Mallarino, Antonio, "Flood Adulterated Grain - Nutrient Supply to Crops When Land Applied" (2019). Integrated Crop Management News. 2547.
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