Long-term Tillage and Crop Rotation Study, Nebraska

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: G.E. VARVEL and J.W. DORAN
Publication_Date: 1999
Title: Long-term Tillage and Crop Rotation Study, Nebraska
Edition:
Geospatial_Data_Presentation_Form:
Series_Information:
Series_Name:
Issue_Identification:
Publication_Information:
Publication_Place: Lincoln, Nebraska
Publisher: Soil and Water Conservation Research Unit, USDA-ARS
Other_Citation_Details:
Online_Linkage:
Description:
Abstract:
(adapted from Project Summary) PROBLEM: Soil and water conservation concerns have been and continue to be the major driving forces in agricultural production in the western Corn Belt. In addition, increasing energy costs during the late 1970's had become a reality and alternative management systems to reduce these costs in agriculture were needed. Solutions to these types of problems require integrated management approaches where several factors are investigated in time and space as the systems equilibrate. APPROACH: A long-term experiment comparing six primary tillage systems was established in1980 to examine both soil and water conservation and energy concerns in a monoculture corn system. In addition, it was decided after the first 5 years that crop rotation was also a major component needed to address these problems and fortunately, because the original tillage whole plots were large enough, 3 additional cropping systems were included. The objectives since that time wereto determine both the short- and long-term effects of tillage and crop rotationon crop yield and performance and several soil parameters including nitrate leaching, organic matter changes, and other chemical, physical, and biological properties. Tillage and rotation system treatments are as follows: Primary tillage Secondary tillage Time of tillage =============== ================= ================== No tillage Ridge tillage Disk tillage Disk Spring/Spring Subsoil Disk Fall/Spring Chisel Disk Fall/Spring Plow Disk Fall/Spring Cropping systems Continuous corn Continuous soybean Corn-soybean two-year rotation Each tillage system and cropping system treatment is present every year. Nitrogen fertilizer is applied to the corn after planting in all systems at therate of 100 kg ha-1. Measurements being made include grain and dry matter yields and N uptake for all crops. Soil properties are being determined on surface samples taken to a depth of 30 cm (0 to 7.5, 7.5 to 15, and 15 to 30 cmincrements) in the spring of 1998. Profile samples will be taken in 1999 to a depth of 180 cm in 30 cm increments to examine tillage and cropping system effects. FINDINGS AND INTERPRETATION: Results are preliminary at this time, but they will be used in combination withresults from the long-term rotation study at Mead where a similar tillage system is used to examine the effects of both tillage and cropping system on C sequestration. It provides the opportunity to examine these effects in established studies with at least 10 to 20 years of management history. FUTURE PLANS: Total C as affected by these tillage and cropping systems is being determined on surface samples taken this past spring. Future emphasis for this study includes soil quality measurements and other chemical, biological, and physicalproperties as deemed appropriate.
Purpose:
Not Available
Supplemental_Information:
REFERENCE: REFERENCES
Supplemental_Information:
REFERENCE: no publications yet
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19980401
Ending_Date: Unknown
Currentness_Reference:Unknown
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -96.0
East_Bounding_Coordinate: -96.0
North_Bounding_Coordinate: 41.0
South_Bounding_Coordinate: 41.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword_Thesaurus: DATA SET LANGUAGE
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > AGRICULTURAL CHEMICALS > FERTILIZERS > NITROGEN
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > AGRICULTURAL PLANT SCIENCE > CROP/PLANT YIELDS
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 BULK DENSITY
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL CHEMISTRY
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL DEPTH
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL FERTILITY
Theme_Keyword: EARTH SCIENCE > AGRICULTURE > SOILS > SOIL HORIZONS/PROFILE
Theme_Keyword: EARTH SCIENCE > HUMAN DIMENSIONS > ECONOMIC RESOURCES > AGRICULTURE PRODUCTION > MONOCULTURE
Theme_Keyword: GROUND-BASED OBSERVATIONS
Theme_Keyword: Carbon Loss
Theme_Keyword: Carbon Sequestration
Theme_Keyword: Carbon Sink
Theme_Keyword: Carbon Storage
Theme_Keyword: Chisel
Theme_Keyword: Corn
Theme_Keyword: Disk Tillage
Theme_Keyword: Disking
Theme_Keyword: Glycine Max L.
Theme_Keyword: No Tillage
Theme_Keyword: Particulate Organic Matter
Theme_Keyword: Plow
Theme_Keyword: Pom
Theme_Keyword: Ridge Tillage
Theme_Keyword: Soybean
Theme_Keyword: Zea Mays
Theme_Keyword: Conservation
Theme_Keyword: FARMING
Theme_Keyword: ECONOMY
Theme_Keyword: GEOSCIENTIFIC INFORMATION
Theme_Keyword: ENGLISH
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NEBRASKA
Access_Constraints: none
Use_Constraints:
none
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: GARY E. VARVEL
Contact_Position: INVESTIGATOR
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:
No missing data. Measurements are still being taken.
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: USDA.ARS.SWCRU.CropSysTrial2
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:
Metadata_Review_Date: 20121129
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: TYLER B. STEVENS
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Address: NASA Goddard Space Flight Center
Address: Global Change Master Directory
City: Greenbelt
State_or_Province: MD
Postal_Code: 20771
Country: USA
Contact_Voice_Telephone: (301) 614-6898
Contact_Facsimile_Telephone: 301-614-5268
Contact_Electronic_Mail_Address: Tyler.B.Stevens@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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