Leopold Center for Sustainable Agriculture



The Leopold Letter is published quarterly.

Annual Report

At the Leopold Center, our mission is to investigate alternative agricultural practices that allow producers to operate more economically while being environmentally sound. In this annual report, we highlight a wide array of activities we have accomplished over the past year through partnerships...

On The Ground Videos

Integrated crop and livestock systems utilize manure as an organic source of fertilizer, but within this manure are bacteria that may contaminate water bodies if transported off the field by rain. Iowa State University professor Michelle Soupir describes her field and lab studies of bacterial movement from manure to soil to water, as well as the survival of potentially disease-causing bacteria that are resistant to antibiotics used to treat livestock and humans. Filmed June 2013