LPM-N: a lumped parameter model for nitrogen leaching in agricultural lands

This paper documents a lumped parameter model for the assessment of nitrogen leaching under agricultural lands. The model considers nitrogen transformation processes, climate data, and multiple irrigation and fertilizer applications. The model is efficient due to its analytical nature and the limite...

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Published inGround water Vol. 37; no. 1; pp. 27 - 32
Main Authors El-Kadi, A.I, Ling, G
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.01.1999
National Ground Water Association
Ground Water Publishing Company
Subjects
Online AccessGet full text
ISSN0017-467X
1745-6584
DOI10.1111/j.1745-6584.1999.tb00954.x

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Abstract This paper documents a lumped parameter model for the assessment of nitrogen leaching under agricultural lands. The model considers nitrogen transformation processes, climate data, and multiple irrigation and fertilizer applications. The model is efficient due to its analytical nature and the limited data requirements. The documentation introduces a PC-Windows interface module that simplifies the preparation of input data and the presentation of results. It also presents an example application of the model that compares simulated to measured nitrate values. The model is suitable for managing fertilizer applications, and for estimating leachate concentrations reaching ground water aquifers.
AbstractList The design and development of a lumped parameter model for the evaluation of nitrogen leaching processes occurring underneath agricultural lands are described. The proposed modeling scheme analyzes N transformation processes, climate information, and the influences of multiple irrigation and fertilizer applications. The analytical nature of the model makes it highly efficient. Data requirements are relatively limited. The preparation of input data and the presentation of results from the system were made much simpler through the introduction of a PC-Windows interface module. Results from a trail simulation of nitrate values for a given plot were compared against results from field assessments of the plot. The best applications of the model are discussed.
This paper documents a lumped parameter model for the assessment of nitrogen leaching under agricultural lands. The model considers nitrogen transformation processes, climate data, and multiple irrigation and fertilizer applications. The model is efficient due to its analytical nature and the limited data requirements. The documentation introduces a PC‐Windows interface module that simplifies the preparation of input data and the presentation of results. It also presents an example application of the model that compares simulated to measured nitrate values. The model is suitable for managing fertilizer applications, and for estimating leachate concentrations reaching ground water aquifers.
This paper documents a lumped parameter model for the assessment of nitrogen leaching under agricultural lands. The model considers nitrogen transformation processes, climate data, and multiple irrigation and fertilizer applications. The model is efficient due to its analytical nature and the limited data requirements.
Audience Academic
Author El-Kadi, A.I
Ling, G
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Cites_doi 10.2134/agronj1993.00021962008500010028x
10.1029/97WR02683
10.1007/BF01347964
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– volume-title: Agriculture and natural resources: The broadening horizon
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  article-title: From hoes to herbicides: Agriculture and ground water quality
  publication-title: J. Soil Water Conserv
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Snippet This paper documents a lumped parameter model for the assessment of nitrogen leaching under agricultural lands. The model considers nitrogen transformation...
The design and development of a lumped parameter model for the evaluation of nitrogen leaching processes occurring underneath agricultural lands are described....
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SubjectTerms Agricultural land
Agriculture
Analysis
biogeochemical cycles
biological activity in soil
Climatic data
computer simulation
computer software
Contamination
downward movement
equations
Fertilizer application
fertilizers
Groundwater
groundwater contamination
irrigation
leachates
Leaching
mathematical models
meteorological data
nitrates
Nitrogen
nitrogen fertilizers
root zone flux
simulation models
Water, Underground
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Title LPM-N: a lumped parameter model for nitrogen leaching in agricultural lands
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Volume 37
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