Findings from a Leopold Center-supported grant were reported in the article Cover crop mixtures versus single species: Water quality and cash crop yield by Emily Waring, Mark Licht, Elizabeth Ripley, Ann Staudt, Sara Carlson and Matthew Helmers, published in the Journal of Soil and Water Conservation (December 2022).
A 10-year field-scale study on the effects of winter rye cover crops on corn and soybean yields showed no significant impacts on cash crop yields attributable to cover crop use. The study by Iowa Learning Farms and Practical Farmers of Iowa was supported by state funders and LCSA.
A research article, The role of ruminants in reducing agriculture's carbon footprint in North America," coauthored by Mark Rasmussen, was selected by the board of the Soil and Water Conservation Society as the 2021 recipient of the Best Research Paper for Impact and Quality Honorable Mention in the Journal of Soil and Water Conservation.
New research shows integrated organic crop and livestock production systems can conform to food safety standards. In-kind support from the Leopold Center provided student assistance for the research, led by Kathleen Delate, professor of horticulture and agronomy at Iowa State, and Angela Shaw, associate professor of food science and huan nutrition at ISU.
Mark Rasmussen shares comments about Paul Johnson's legacy in the article, "Remembering Two Giants of Iowa Agriculture," by Gene Lucht in Iowa Farmer Today, Feb. 25, 2021.