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
                                            Malone, Robert

                                                         - *Rob*item
                                            Meade, Terryitem
                                            Ma, Liwangitem
                                            ANAPALLI, S - COLORADO STATE UNIVitem
                                            KANWAR, R - IA STATE UNIVERSITYitem
                                            Karlen, Douglasitem
                                            Hatfield, Jerryitem
                                            Ahuja, Lajpat
  Submitted to: American Society of Agronomy Meetings
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 11/6/2003
                                    Publication  Date: 11/6/2003
                                    Citation: MALONE, R.W., MEADE, T.G., MA, L., ANAPALLI, S.A., KANWAR, R.S., KARLEN, D.L., HATFIELD, J.L., AHUJA, L.R. SIMULATING LATE SPRING NITROGEN TEST EFFECTS ON N LEACHING AND CROP PRODUCTION. CD-ROM. MADISON, WI. AMERICAN SOCIETY OF AGRONOMY MEETINGS. 2003.Interpretive Summary:
                                Technical Abstract: Split applications of fertilizer according to soil nitrate testing can reduce nitrate transport off site without reducing corn yield.  In fact, this is recommended in many states as a best management practice (BMP) for corn and is sometimes called the pre sidedress soil nitrate test (PSNT) or the late spring nitrate test (LSNT).  The effects of this management practice under different conditions (soil, climate, etc.), however, are uncertain.  Also, some difficulties of the LSNT include:  determination of optimum N application rates and timing, and applying fertilizer within an acceptable timeframe after soil testing.  A model that accurately simulates soil C/N cycling, nitrate leaching, and crop yield could help solve these problems.  The objective of this research was to compare six years of observed data from twelve one acre subsurface drained plots located in northeast Iowa under two managements (LSNT and single N application) to RZWQM simulations.  Results suggest that RZWQM is a promising tool to quantify the effects of LSNT in comparison to more traditional management (single N application).


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