A Simulation Model of Biophysiochemical Transformations of Nitrogen in Tile‐Drained Corn Belt Soil

Duffy, J.T.; Chung, C.; Boast, C. W.; Franklin, Mark A.

doi:10.2134/jeq1975.00472425000400040012x

Cited by 41 publications

(31 citation statements)

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“…Data on moisture stress factors and distribution of the root system were taken from Shaw (1963). Com growth-rate functions used in the model are similar to the one used by Duffy et al (1975).…”

Section: Model Input Datamentioning

confidence: 99%

Modification of DRAINAGE Model by Using the Nitrogen Component from the GLEAMS Model

Verma¹,

Kanwar²,

Tim³

1995

Transactions of the ASAE

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The NITRO subroutine of the DRAINAGE model (Kanwar et al., 1983) was modified using the nitrogen transformation components of the GLEAMS (Leonard et al., 1987) model to predict more accurately the leaching of NO3-N to subsurface drainage water. Predicted values of tile flows and nitrate concentrations in tile effluent have shown a good agreement with observed data for the period from 1984 to 1992. There were some discrepancies between the predicted and observed values in the beginning of the simulation period resulting from lack of field data for soil-profile initialization. Despite the assumed steady-state condition within each time increment (one day) and the complexity of the drainage system, the modified DRAINAGE model has shown the capability to reasonably estimate long-term N loss with tile effluent. Average deviation and standard error between the predicted and observed NO3-N concentrations in the tile water indicated that the modified DRAINAGE model developed in this study resulted in better predictions of NO3-N concentrations in the drainage water than the original DRAINAGE model. (Kanwar et al, 1983) was modified using the nitrogen transformation components of the GLEAMS (Leonard et al, 1987)

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Section: Model Input Datamentioning

confidence: 99%

Modification of DRAINAGE Model by Using the Nitrogen Component from the GLEAMS Model

Verma¹,

Kanwar²,

Tim³

1995

Transactions of the ASAE

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“…Experience with the development of a nitrogen transport model for a tile drained field (Duffy andothers 1975, Vithayathil andothers 1977) suggests that the approach used here can lead to a valid representation of nutrient and pesticide transport in artificially drained croplands and' thereby assist in developing control strategies to minimize the loss of these chemicals. The submodeis are being developed in such a way that they can be applied in a variety of field conditions by appropriate choice of parameter values.…”

Section: The Systems Approachmentioning

confidence: 99%

A systems approach to evaluate nutrient and pesticide transport from artificially drained cropland

Vithayathil

Boast

Hoener

et al. 1979

Environmental Management

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/ Artificial drainage by subsurface and open drains, which is practiced in heavily cultivated areas of the United States, can enhance the transport of nutrients and pesticides to surface waters. Analyses of drainage data show that Ohio, Iowa, Indiana, Illinois, Michigan, and Minnesota are the leading states with artificially drained croplands. Several experimental fields in different parts of the country utilizing artificial drainage have been monitored in the past to determine the loss of nutrients and the results of 12 such studies are summarized here in tabular form. The several interacting processes that take place in a watershed and that contribute to the movement of nutrients and pesticides to surface waters are extremely complex. To effectively study the dynamic nature of the transport processes and to develop control measures, an interdisciplinary systems approach is proposed. The central feature of the systems approach is the development of a computer simulation model representing the time-variant interaction of the major biophysiochemical processes that contribute to the loss of nutrients and pesticides. A flow diagram showing the inputs, outputs, and interactions of the various processes considered in the model, along with a description of the field monitoring program designed to provide the data for the model development, is given in the report.

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“…The general objectives of this study are to develop mathematical models to simulate the transport of nitrogen in the soil profile, and to develop a deterministic computer model to simulate the nitrate losses with tile drainage water. Two mathematical models are developed to analyze the transport of nitrogen in the soil profile; a simulation model developed by Duffy et al (1975) is modified to predict the nitrate losses in tile water.…”

Section: Objectivesmentioning

confidence: 99%

Hydrologic simulation of nitrate losses with tile drainage water

Kanwar

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A Simulation Model of Biophysiochemical Transformations of Nitrogen in Tile‐Drained Corn Belt Soil

Cited by 41 publications

References 0 publications

Modification of DRAINAGE Model by Using the Nitrogen Component from the GLEAMS Model

Modification of DRAINAGE Model by Using the Nitrogen Component from the GLEAMS Model

A systems approach to evaluate nutrient and pesticide transport from artificially drained cropland

Hydrologic simulation of nitrate losses with tile drainage water

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