U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 close



Research
                Research Home
                            National Programs
                            Research Projects
                            Scientific Manuscripts
                            International Engagement
                            Scientific Software/Models
                            Databases and Datasets
                            Office of Scientific Quality Review
            Media
                News & Features
                            Multimedia
                            Briefing Room
                            Down on the Farm
                            Press Room
                            Science in Your Shopping Cart
                            Scientific Discoveries
                            Tellus
                            Under the Microscope
            About ARS
                About ARS Home
                            Staff Directory
                            Labs and Research Centers (Map)
                            Headquarter Offices
                            Organizational Chart
                            Employee Services (REE Employees Only)
                            Office of Outreach, Diversity, and Equal Opportunity
            Work With Us
                Work With Us Home
                            ARS Vacancies at USAJOBS
                            Careers at ARS Information
                            Scientific Collaborations
                            Extramural Agreements
                            1890 Faculty Research Sabbatical ProgramSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications

Title:   Author  item
                                            Miller, Danielitem
                                            Berry, Elaineitem
                                            Varel, Vincent
  Submitted to: Soil Science Society of America Annual Meeting
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 8/11/2004
                                    Publication  Date: 11/4/2004
                                    Citation: Miller, D.N., Berry, E.D., Varel, V.H. 2004. Microbial activities and feedlot emisions. Procedings of the International Annual Meetings of the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, October 31 - November 4, 2004, Seattle, WA, 2004 CDROM.Interpretive Summary:
                                Technical Abstract: A lack of detailed information describing how microbial activities, influenced by the beef cattle feedlot surface environment, affect a variety of cattle feedlot emissions (greenhouse gases, ammonia, odor compounds, and particulates) limits our ability to predict and control emissions.  Moisture and manure content are two critical factors selected for initial investigation, which are likely to affect the general metabolic state of microorganisms in the feedlot surface, and hence, emissions.  A general conceptual model was developed relating manure and moisture content to microbial metabolic state at the feedlot surface and associated emission issues based upon the results of a series of laboratory incubations.  Three microbial metabolic states (anaerobic, aerobic, and inactive) were identified that aligned well with potential emissions.  The potential to emit depended upon the metabolic state of the microbial community, which in turn was influenced mostly by moisture content.  The magnitude of a particular emission was more closely tied positively and, in some cases, negatively to increasing manure content.  Based upon the general conceptual model developed in this series of studies, the optimum management of manure and moisture content in the feedlot surface may be within a narrower moisture regime and at lower manure content than current practices recommend.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov