Northwest and Allee Research and Demonstration Farm
The Doon Compaction Study started in the spring of 1997. The goal was to determine the impact heavy grain carts and heavy manure spreaders might be having on the Moody soils and whether deep tilling could restore the yield.
Iowa State University
Kohl, Kris, "Compaction Study" (2003). Iowa State Research Farm Progress Reports. 1480.