Rotation and Nitrogen Fertilization Effects on Changes in Soil Carbon and Nitrogen

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: Rotation and Nitrogen Fertilization Effects on Changes in Soil Carbon and Nitrogen
Description:
Abstract:
The dataset consists of data resulting from an experimental study involving seven cropping systems (three monoculture, two 2-year, and two 4-year rotations) with three rates of N fertilizer. Data includes dry matter samples and soil samples with resulting analyses to determine total C and N content. The dataset was used to evaluate different treatment and crop rotation combinations and their effects on CO2 emissions. Collection Organization: University of Nebraska Agricultural Research and Development Center Agronomy Farm. Collection Methodology: Dry matter samples for oat, corn, soybean, and grain sorghum were collected each year after physiological maturity, weighed, dried and analyzed for dry matter yield determination. Soil samples were taken in the spring of 1984 from rotation plots to establish base of beginning concentrations for soil C and N in each of the cropping systems. Fifteen cores of 1.8 cm diameter were taken to a depth of 30 cm for each whole-plot treatment. Each of these cores was divided into three depth increments and all fifteen cores were composited by depth. Soil samples were then taken on a yearly basis in the spring prior to planting, to evaluate the effects of rotations, crops in rotations, and N rates. The same procedure was followed except that separate samples were taken from each N rate subplot within the whole-plot treatments. Each sample was analyzed for total C and N using an automatic C and N analyzer interfaced with a continuous flow mass spectrometer. Collection Frequency: Yearly from 1984 through 1992. Update Characteristics: Not updated. STATISTICAL INFORMATION: Not available LANGUAGE: English ACCESS/AVAILABILITY: Data Center: USDA Agricultural Research Service Dissemination Media: Hard Copy File Format: N/A Access Instructions: Contact the data center. Access Restrictions: None Availability Status: On Request
Purpose:
Not Available
Supplemental_Information:
REFERENCE: ADDITIONAL REFERENCES:
Supplemental_Information:
REFERENCE: Rotation and Nitrogen Fertilization Effects on Changes in Soil Carbon and Nitrogen. Gary E. Varvel. Agronomy Journal 86:319-325. 1994.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19840101
Ending_Date: 19921231
Currentness_Reference:Unknown
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -177.1
East_Bounding_Coordinate: -61.48
North_Bounding_Coordinate: 76.63
South_Bounding_Coordinate: 13.71
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > AGRICULTURAL CHEMICALS > FERTILIZERS > NITROGEN
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > AGRICULTURAL PLANT SCIENCE > CROPPING SYSTEMS
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > ORGANIC MATTER
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL CHEMISTRY
Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > AIR QUALITY
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > CARBON
Theme_Keyword: EARTH SCIENCE > BIOSPHERE > VEGETATION > NITROGEN
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER
Theme_Keyword: EARTH SCIENCE > LAND SURFACE > SOILS > SOIL CHEMISTRY
Theme_Keyword: EARTH SCIENCE > HUMAN DIMENSIONS > ECONOMIC RESOURCES > AGRICULTURE PRODUCTION > MONOCULTURE
Theme_Keyword: Agriculture And Food Security
Theme_Keyword: Carbon Dioxide
Theme_Keyword: Agriculture And Food Security > Agricultural Production > Crop Yields
Theme_Keyword: Environmental Protection > Air Quality
Theme_Keyword: Land And Freshwater Resources > Land Processes
Theme_Keyword: Land And Freshwater Resources > Soils
Theme_Keyword: Co2 Emissions
Theme_Keyword: Co2 Release
Theme_Keyword: Crop Rotation
Theme_Keyword: Cropping Systems
Theme_Keyword: Fertilization
Theme_Keyword: Land And Freshwater Resources
Theme_Keyword: Soil Carbon
Theme_Keyword: Soil Nitrogen
Theme_Keyword: Conservation
Theme_Keyword: FARMING
Theme_Keyword: BIOTA
Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Theme_Keyword: ENVIRONMENT
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: IMAGERY/BASE MAPS/EARTH COVER
Theme_Keyword: PLANNING CADASTRE
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > NORTH AMERICA > CANADA
Place_Keyword: CONTINENT > NORTH AMERICA > CENTRAL AMERICA
Place_Keyword: CONTINENT > NORTH AMERICA
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALASKA > ALASKA
Access_Constraints: Not Available
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GARY E. VARVEL
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: USDA Agricultural Research Service
Address: University of Nebraska
Address: Soil and Water Conservation Research Unit
Address: 119 Keim Hall
Address: P.O. Box 83934
City: Lincoln
State_or_Province: NE
Postal_Code: 68583-0934
Country: USA
Contact_Voice_Telephone: (402) 472-5169
Contact_Voice_Telephone: 1-402-472-5169
Contact_Facsimile_Telephone: (402) 472-7904
Contact_Facsimile_Telephone: 1-402-472-7904
Contact_Electronic_Mail_Address: gvarvel@unlinfo.unl.edu
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Standard sampling, collection, and analysis procedures.
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA/ARS/SWCRU > Soil and Water Conservation Research Unit, Agricultural Research Service, U. S. Department of Agriculture
Contact_Person: GARY E. VARVEL
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: USDA Agricultural Research Service
Address: University of Nebraska
Address: Soil and Water Conservation Research Unit
Address: 119 Keim Hall
Address: P.O. Box 83934
City: Lincoln
State_or_Province: NE
Postal_Code: 68583-0934
Country: USA
Contact_Voice_Telephone: (402) 472-5169
Contact_Voice_Telephone: 1-402-472-5169
Contact_Facsimile_Telephone: (402) 472-7904
Contact_Facsimile_Telephone: 1-402-472-7904
Contact_Electronic_Mail_Address: gvarvel@unlinfo.unl.edu
Resource_Description: USDA0098
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Not Available
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.ianr.unl.edu/arslincoln/swcru/home.htm
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20050907
Metadata_Review_Date: 20121129
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GCMD User Support Office
Contact_Organization: NASA Global Change Master Directory
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Not Available
City: Lanham
State_or_Province: MD
Postal_Code: 20706
Country: USA
Contact_Voice_Telephone: Not Available
Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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