1. General Model Information

Name: SimRoot

Acronym: SIMROOT

Main medium: terrestrial
Main subject: agriculture
Organization level: Organ, Organism
Type of model: Geometric-Dynamic, not specified (3D), difference equations (3D), rule based
Main application: research, simulation/optimisation tool,
Keywords: root, geometric, dynamic, bean, maize


Jonathan Lynch
221 Tyson, University Park, PA 16802, USA

Phone: 814 863 2256
Fax: ?
email: jpl4@psu.edu
Homepage: http://www.personal.psu.edu/jpl4


Jonathan Lynch


See website: http://www.personal.psu.edu/faculty/j/p/jpl4/research/simroot/project.htm

SimRoot An architectural root simulation model Introduction Simroot is a architectural root model that has been developed of the last 10 years for simulation of different root systems and quantification of root related parameters such as root phophorus uptake in non-homogenious soils.

II. Technical Information

II.1 Executables:

Operating System(s): Windows, older version linux and silicon graphics work station

II.2 Source-code:

Programming Language(s): C

II.3 Manuals:

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References

Nielsen, K. L. Lynch, J. P. Jablokow, A. G. Curtis, P. S. 1994. Carbon cost of root systems: an architectural approach. Plant and Soil, 1994, Vol. 165, No. 1, pp. 161-169

Lynch, JP, KL Nielsen, RD Davis, AG Jablokow. 1997. SimRoot: Modeling and visualization of botanical root systems. Plant and Soil 188:139-151.

Walk, TC, E van Erp, JP Lynch. 2004. Modelling applicability of fractal analysis to efficiency of soil exploration by roots. Annals of Botany 94:119-128.

Ma, Z, TC Walk, A Marcus, JP Lynch. 2001. Morphological synergism in root hair length, density, initiation and geometry for phosphorus acquisition in Arabidopsis thaliana: a modeling approach. Plant and Soil 236:221-235.

Rubio, G, T Walk, Z Ge, X Yan, H Liao, JP Lynch. 2001. Root gravitropism and belowground competition among neighboring plants: a modeling approach. Annals of Botany 88:929-940.

Ge, Z, G Rubio, J Lynch. 2000. The importance of root gravitropism for inter-root competition and phosphorus acquisition efficiency: results from a geometric simulation model. Plant and Soil 218: 159-171.

Nielsen, K. L. , Lynch, J. P. , Weiss, H. N. 1997. Fractal geometry of bean root systems: correlations between spatial and fractal dimension. American Journal of Botany, 1997, Vol. 84, No. 1, pp. 26-33, 37 ref.

V. Further information in the World-Wide-Web

VI. Additional remarks

A 3d root model, created to understand the architectural importance of roots for nutrient acquisition by plants on poor , hetrogenous soils. Model has been mainly used to study beans and corn under phosphorus defficient conditions.
Last review of this document by: : Fri Dec 9 02:04:16 2005
Status of the document: Contributed by Jouke Postma
last modified by Joachim Benz Mon Dec 12 16:00:55 CET 2005

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