On Wednesday, we hosted a webinar about research into the connection between soil health and environmental quality at a cover crop and no-till research site. Morgan Davis, Assistant Professor at The University of Missouri School of Natural Resources, and Emily Waring, Graduate Research Assistant in Agricultural and Biosystems Engineering at Iowa State University, measured nitrate leaching, soil health indicators and greenhouse gas emissions to examine the tradeoffs and benefits of stacking cover crop and no-till conservation practices.
Cover crops and no-till are common conservation practices in Iowa and they can address concerns with both soil health and environmental quality. By combining these two practices, several resource concerns can be addressed. The research objective was to measure soil properties and environmental losses at a long-term research site and compare conservation treatments.
Davis and Waring presented results from 2018 and 2019, which were two of the wettest years on record. The distribution of precipitation was also different. There was more rain in late summer to early fall than the historic average, which provides more opportunity for cover crops to improve water quality. Davis and Waring shared water quality, greenhouse gas emission, and soil health results for the study during these two years. The soil health metric discussed during the webinar was bio-available carbon (24 hour CO2 burst). The results are summarized in the bubble plot below.
Join us on Wednesday, August 26, for a webinar titled “Evaluating Annual Forages for Beef Cattle: ISU Forage Research Test Plots” with Erika Lundy, Extension Beef Specialist at Iowa State University Extension and Outreach.