Submitted to: Journal of Environmental Quality
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: October 22, 2004
Publication Date: March 7, 2005
Citation: Miller, D.N., Berry, E.D. 2005. Cattle feedlot soil moisture and manure content: I. Impacts on greenhouse gases, odor compounds, nitrogen losses, and dust. Journal of Environmental Quality. 34:644-655. Interpretive Summary: Feedlot surfaces experience a wide range of manure and moisture contents, which affect the emissions of odor compounds, NH3, greenhouse gases, and dust. Potential dust production was directly attributable to moisture and manure content, whereas other emissions were the product of, or affected by, microbial metabolism. The range of moisture and manure contents tested produced three general microbial metabolisms, no activity, aerobic activity, and fermentative activity. Microbial metabolism was fueled by glucose and starch and affected emissions by changing the pH, producing malodorous fermentation end products and greenhouse gases, and consuming free NH3. Minimizing environmentally important emissions requires understanding the context of emissions, the underlying mechanisms, and the relationships between emissions.