Direct Biologicals Research

Crust & Flies


Crown Prairie Farms: Iowa
H.F. Farms: Iowa
J.H. Farms: Iowa
Swine Graphic Enterprises: Iowa

Sludge & Odor


Howard Farms: North Carolina
Mid-American Feedyard: Nebraska
Tschetter Colony: South Dakota
Waters III: North Carolina

Independent Studies


ISU Pit Digester Study
ISU Sulfidox Study
Nutri-Cycle Study
Pennsylvania Pork Production
Pit Digester Manure Analysis
Sporzyme Sample Data

Solids Liquefication


Anson Farms: Nebraska
J.J. Farms: South Dakota
Premier Swine: Iowa