Northwest and Allee Research and Demonstration Farm
Soil moisture samples were taken at 11 sites in northwest Iowa during the first few days of November 2008. Moisture samples were pulled at 1-ft increments down to a 5-ft depth. Samples were weighed, oven dried, and reweighed at the Northwest Research Farm. The moisture percentage was calculated from these data, and then used to calculate the inches of plant available moisture in the soil. The data from these sites are listed in the following table.
Iowa State University
DeJong, Joel L., "Soil Moisture" (2009). Iowa State Research Farm Progress Reports. 604.