Management of Soil, Water, and Nitrogen Resources to Protect Ground Water QualityEntry ID: USDA0547
Abstract: The purpose of "Management of Soil, Water, and Nitrogen Resources to
Protect Ground Water Quality" is to aid in the development of soil,
water, and crop management practices to more effectively use nitrogen
and other nutrient and energy inputs to maintain or improve soil
productivity; to minimize risk of ground water contamination; to
describe and quantify nitrogen cycling processes in soils and ... crops as
impacted by fertilizer and crop management practices, tillage, and
climate to improve synchronization between nutrient availability and
crop requirements; and to develop tillage/residue management practices
to optimize soil/water conservation.
Collection Organization: University of Nebraska
Collection Methodology: The approaches to accomplish the research
objectives are to characterize the chemical, biological, &
hydrological processes involved in crop production, to evaluate how
these processes interact in cropping systems, & to integrate cultural
practices into economically & environmentally sound N & water
management systems. A combination of field, growth chamber &
laboratory studies were utilized . Tagged-N & other tracers used to
characterize N cycling in biological and soil systems. Nitrogen
sources from fertilizer, soil, water, microbial biomass evaluated in
terms of synchronization with crop N requirements & potential for
nitrate movement. Impact of tillage systems, crop rotations, & cover
crops evaluated relative to nitrate leaching. Models used to compare
cropping & irrigation systems for N use efficiency, potential for
nitrate contamination of ground water, & economic feasibility.
Collection Frequency: N/A
Update Characteristics: N/A
Data Center: University of Nebraska
Dissemination Media: Paper-based publications.
Access Instructions: Contact the data center.
Access Restrictions: None
(Click for Interactive Map)
AGRICULTURE > AGRICULTURAL CHEMICALS > FERTILIZERS
AGRICULTURE > AGRICULTURAL PLANT SCIENCE > CROPPING SYSTEMS
AGRICULTURE > SOILS > SOIL CHEMISTRY
AGRICULTURE > SOILS > SOIL PRODUCTIVITY
BIOSPHERE > VEGETATION > NITROGEN
HUMAN DIMENSIONS > ENVIRONMENTAL GOVERNANCE/MANAGEMENT > WATER MANAGEMENT
HUMAN DIMENSIONS > ENVIRONMENTAL GOVERNANCE/MANAGEMENT > LAND MANAGEMENT
TERRESTRIAL HYDROSPHERE > WATER QUALITY/WATER CHEMISTRY
LAND SURFACE > SOILS > SOIL CLASSIFICATION
LAND SURFACE > SOILS > SOIL MECHANICS
BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > BIOGEOCHEMICAL CYCLES
BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > NUTRIENT CYCLING
ISO Topic Category
Quality Standard scientific protocols.
Role: TECHNICAL CONTACT
Email: jscheper at unlinfo.unl.edu
USDA Agricultural Research Service Soil and Water Conservation University of Nebraska 119 Keim Hall, P.O. Box 83934
Province or State: NE
Postal Code: 68583-0934
Doran, J.W., Varvel, G.E., And Culley, J.B.L. 1993. Tillage and
residue management effects on soil Proc., Int'l Workshop on
Sustainable Land Mgmt, June 1993, Lethbridge, Alberta, Canada.
Varvel, G.E. 1994. Rotation and nitrogen fertilization effects on
changes in soil carbon and nitrogen. Agron. J. 86:319-325.
Varvel, G.E. 1994. Monoculture and rotation effects precipitation use
efficiency of corn. Agron. J. 86:204-208.
Creation and Review Dates
DIF Creation Date: 2005-09-12
Last DIF Revision Date: 2005-09-19