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
 Agricultural Systems Research: Sidney, MT
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    Careers


        


                    NPARL
                        NPARL
                                    Pest Management Research
                                    Grasshoppers: Their Biology, Identification and Management:Search small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Plains Area Sidney, Montana Northern Plains Agricultural Research Laboratory Agricultural Systems Research 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
                                            Sainju, Upendraitem
                                            Barsotti, Joy
  Submitted to: World Congress of Soil Science
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 2/15/2014
                                    Publication  Date: N/A
                                    Citation: N/AInterpretive Summary:
                                Technical Abstract: Little information is available about management practices effect on net global warming potential (GWP) and greenhouse gas intensity (GHGI) under dryland cropping systems. We evaluated the effects of cropping sequences (conventional till malt barley-fallow [CTB-F], no-till malt barley-pea [NTB-P], and no-till continuous malt barley [NTCB]) and N fertilization rates (0 and 80 kg N ha-1) on net GWP and GHGI from 2008 to 2011 in eastern Montana. The CO2 equivalent from farm operations was greater in CTB-F than NTB-P and NTCB, from N fertilization was greater with 80 than with 0 kg N ha-1, and from crop residue and soil organic C (SOC) sequestration were greater in NTB-P or NTCB with 80 kg N ha-1 than other treatments, but the equivalent from soil greenhouse gases (GHGs) varied among treatments and years. Net GWP and GHGI based on soil respiration were greater in NTCB with 0 kg N ha-1, but GWP and GHGI based on SOC were greater in CTB-F with 0 kg N ha-1 than other treatments. Because of greater grain yield but lower GWP and GHGI, NTB-P with 80 kg N ha-1 may be used as a management option to reduce global warming potential while sustaining dryland crop yields compared to CTB-F with 0 kg N ha-1 in the northern Great Plains. The management option also has been known to reduce the cost of N fertilization and control weeds, pests, and diseases effectively compared to NTCB with 80 kg N ha-1.


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