Peter Motavalli, associate professor in the MU Department of Soil, Environmental and Atmospheric Sciences, directed the research focused on measurements of soil nitrous oxide emissions and says the results are another piece of information that can help farmers select management options that may increase agricultural production and economic returns while also reducing environmental impacts with use of nitrogen fertilizer. The research was conducted during above average rainfall growing seasons from 2008 to 2010 in poorly-drained soils so the results of between 2.4 to 3.8 percent cumulative loss of the applied fertilizer N as nitrous oxide N are probably relatively high for conditions in Missouri.
"The main goal for our team has been to identify agricultural practices that maintain or increase production while reducing the environmental impact," Motavalli said. "There hasn't been much data on greenhouse gas emissions for Missouri, and we hope to provide information on how much nitrogen is being lost as nitrous oxide with different agricultural practices so growers can make informed choices depending on their farm operation and environmental conditions."
Nelson, Motavalli, and Pat Nash, an MU graduate student, presented the results of their three-year study, "Use of Strip Tillage to Increase Corn Production and Reduce Soil Nitrous Oxide Emissions," at the national meetings of the American Society of Agronomy in November and at the Missouri Crop Management Conference in December.
|Contact: Steven Adams|
University of Missouri-Columbia