Full TGIF Record # 85414
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Web URL(s):http://www.jswconline.org/content/57/6/485.full.pdf+html
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http://www.jswconline.org/content/57/6/485.full.pdf
    Last checked: 08/13/2013
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Publication Type:
i
Professional
Author(s):Meisinger, John J.; Delgado, Jorge A.
Author Affiliation:Meisinger: U.S. Department of Agriculture-Agricultural Research Service, Beltsville, Maryland; Delgado: U.S. Department of Agriculture-Agricultural Research Service, Collins, Colorado
Title:Principles for managing nitrogen leaching
Section:Research: Special section
Other records with the "Research: Special section" Section
Source:Journal of Soil and Water Conservation. Vol. 57, No. 6, November/December 2002, p. 485-498.
Publishing Information:Ankeny, IA: Soil and Water Conservation Society
# of Pages:14
Related Web URL:http://www.jswconline.org/content/57/6/485.abstract
    Last checked: 08/13/2013
    Notes: Abstract only
Keywords:TIC Keywords: Nitrogen fertilization; Irrigation scheduling; Interplanting; Leaching; Nitrogen; Fertilization rates; Fertilization; Buffer zones; Filter strips
Abstract/Contents:"Managing leaching presents a challenge to nutrient managers who must develop nitrogen (N) management plans that consider rate and application strategies that account for soil-properties, hydrology, and crop-tillage systems of specific sites. Nitrogen-leaching losses from common grain-production systems typically range from 10% to 30% of the total N input. Major leaching events occur when soil N concentrations are high and water is moving through the soil profile. The universal tools for managing N leaching include understanding the soil-crop-hydrologic cycle, avoiding excess N applications, and applying N in phase with crop demand. Specific cropping system tools for managing leaching include use of grass cover crops, adding a legume to a rotation, and adding crops that more fully utilize the soil-water resources. The primary water-management tool to reduce N leaching is irrigation scheduling. Other watershed approaches to reduce leaching losses include use of riparian zones and conservation reserve program areas. Site monitoring tools such as the pre-sidedress soil-nitrate test, the leaf chlorophyll meter, and tissue-nitrate tests are useful in identifying N-sufficient sites and avoiding excess N rates. Real-time monitoring techniques, such as the N Reflectance Index, can be combined with global positioning systems and geographic information systems to produce maps of the crop N status. Crop simulation models can also be used to integrate N and water dynamics during a growing season, and they can provide guidance in designing practices for reducing N leaching. The application of the above N management tools to fields, or to specific management areas within fields, will improve crop N recoveries with subsequent reductions in N leaching."
Language:English
References:99
See Also:Other items relating to: Buffer Zones
Note:Figures
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Meisinger, J. J., and J. A. Delgado. 2002. Principles for managing nitrogen leaching. J. Soil Water Conserv. 57(6):p. 485-498.
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Web URL(s):
http://www.jswconline.org/content/57/6/485.full.pdf+html
    Last checked: 10/01/2008
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
http://www.jswconline.org/content/57/6/485.full.pdf
    Last checked: 08/13/2013
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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MSU catalog number: S 622 .J65
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