Accounting for Solution Composition in a Plant Roots Active Nutrient Uptake Model

Iael Raij-Hoffman; Naftali Lazarovitch; Alon Ben-Gal; Uri Yermiyahu; Diederik Jacques

Accounting for Solution Composition in a Plant Roots Active Nutrient Uptake Model

Iael Raij-Hoffman, Naftali Lazarovitch, Alon Ben-Gal, Uri Yermiyahu, Diederik Jacques

The French Associates Institute for Agriculture and Biotechnology of Drylands

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The objective of this study was to include the nutrient uptake deficiency stress in the generic multicomponent transport model, HP1 (the geochemical code PHREEQC coupled to the transient water and solute transport model HYDRUS-1D). The first step was the incorporation of a combined passive-active root nutrient uptake model in HP1 (Jacques et al., 2006). The nutrient uptake model is based on the model of Silberbush et al. (2005). For example, Ca is taken up by passive and active processes, in which the parameters of the Michaelis-Menten active uptake model depend on the solution chemistry. Simulations were compared with experimental data from four irrigation treatments with different Na(-Cl) concentrations. The results are a preliminary attempt to predict uptake of different ions under varying conditions of salinity. Results for Na and K are promising.

Original language	English
Title of host publication	Proceedings of the 4th International Conference on HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems
Pages	299-306
State	Published - 1 Jan 2013

Cite this

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title = "Accounting for Solution Composition in a Plant Roots Active Nutrient Uptake Model",

abstract = "The objective of this study was to include the nutrient uptake deficiency stress in the generic multicomponent transport model, HP1 (the geochemical code PHREEQC coupled to the transient water and solute transport model HYDRUS-1D). The first step was the incorporation of a combined passive-active root nutrient uptake model in HP1 (Jacques et al., 2006). The nutrient uptake model is based on the model of Silberbush et al. (2005). For example, Ca is taken up by passive and active processes, in which the parameters of the Michaelis-Menten active uptake model depend on the solution chemistry. Simulations were compared with experimental data from four irrigation treatments with different Na(-Cl) concentrations. The results are a preliminary attempt to predict uptake of different ions under varying conditions of salinity. Results for Na and K are promising.",

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Accounting for Solution Composition in a Plant Roots Active Nutrient Uptake Model. / Raij-Hoffman, Iael; Lazarovitch, Naftali; Ben-Gal, Alon et al.
Proceedings of the 4th International Conference on HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems. 2013. p. 299-306.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Accounting for Solution Composition in a Plant Roots Active Nutrient Uptake Model

AU - Raij-Hoffman, Iael

AU - Lazarovitch, Naftali

AU - Ben-Gal, Alon

AU - Yermiyahu, Uri

AU - Jacques, Diederik

PY - 2013/1/1

Y1 - 2013/1/1

N2 - The objective of this study was to include the nutrient uptake deficiency stress in the generic multicomponent transport model, HP1 (the geochemical code PHREEQC coupled to the transient water and solute transport model HYDRUS-1D). The first step was the incorporation of a combined passive-active root nutrient uptake model in HP1 (Jacques et al., 2006). The nutrient uptake model is based on the model of Silberbush et al. (2005). For example, Ca is taken up by passive and active processes, in which the parameters of the Michaelis-Menten active uptake model depend on the solution chemistry. Simulations were compared with experimental data from four irrigation treatments with different Na(-Cl) concentrations. The results are a preliminary attempt to predict uptake of different ions under varying conditions of salinity. Results for Na and K are promising.

AB - The objective of this study was to include the nutrient uptake deficiency stress in the generic multicomponent transport model, HP1 (the geochemical code PHREEQC coupled to the transient water and solute transport model HYDRUS-1D). The first step was the incorporation of a combined passive-active root nutrient uptake model in HP1 (Jacques et al., 2006). The nutrient uptake model is based on the model of Silberbush et al. (2005). For example, Ca is taken up by passive and active processes, in which the parameters of the Michaelis-Menten active uptake model depend on the solution chemistry. Simulations were compared with experimental data from four irrigation treatments with different Na(-Cl) concentrations. The results are a preliminary attempt to predict uptake of different ions under varying conditions of salinity. Results for Na and K are promising.

M3 - Conference contribution

SP - 299

EP - 306

BT - Proceedings of the 4th International Conference on HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems

ER -

Accounting for Solution Composition in a Plant Roots Active Nutrient Uptake Model

Abstract

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