Manure Field Day for Small- and Medium-Size Dairies and Open Feedlots

Iowa State University (ISU) Extension and the Iowa Beef Center (IBC) will host a manure management field day on July 13 at the Mike Bettin feedlot in Sac County. The field day, which is set for 1 to 4 p.m., will provide information on manure management issues and offer alternative manure handling options for open feedlots and dairies with less than 1,000 animal units. ISU Extension beef program specialist Beth Doran said there’s a lot of confusion about the definition of a medium-sized concentrated animal feeding operation (CAFO) and who might need a permit.

“ISU Extension agricultural engineering program specialist Shawn Shouse will present information on the definition of a medium CAFO and how feedlot operators can work with the definition,” Doran said.

Other topics at the field day include manure storage and handling, technical assistance and cost-share opportunities, and using a manure analysis in the cropping system.

“Feedlot and dairy producers can no longer discharge feedlot effluent into a road ditch, so this year’s field day features a demonstration of an economical way to pump feedlot effluent from the solids settling system,” ISU Extension agricultural engineering program specialist Kris Kohl said. “There also will be a demonstration on how to calibrate a manure spreader to achieve the correct application rate.”

The Bettin feedlot is located 2¼ miles north of the intersection of Hwy 175 and Hwy 71. The specific address is 3087 Hwy 71, Odebolt, and the field day will be held at the north feedlot.

Attendance is free, thanks to a grant from IBC. For more information, contact Doran by phone at 712-737-4230 or by email at or Kohl by phone at 712-732-5056 or by email at A flyer is available on the Iowa Manure Management Action Group website.