An official website of the European Union How do you know?      
European Commission logo
JRC Publications Repository Menu

Parameterization of a Crop Growth and Development Simulation Model at Sub-Model Components Level. An Example for Winter Wheat (Triticum aestivum L.)

cover
Dynamic simulation models are frequently used for assessing agronomic and environmental e.ects of di.erent management practices, under various pedo-climatic conditions. CropSyst is a suitable cropping systems simulation model for such applications. However, available CropSyst crop parameters for winter wheat, one of the most important cereals in the world, are limited. In this work we show that it is possible to parameterize separate sub-model components by using existing experimental data and literature. The experiments, carried out in northern Italy between 1986 and 2001, quantified the dynamics of aboveground biomass (AGB), plant nitrogen (N) concentration (PNC) and N uptake (UPTK) by means of periodical measurements. The relative root mean square error (calculated by dividing the root mean square error by the average of observations) obtained after model calibration and validation on an independent data set was, respectively, in the range 9e30% and 17e32% for AGB, 10% and 6e40% for PNC, 8e28% and 9e24% for UPTK. AGB was frequently underestimated. Despite the limited accuracy of simulations, we argue that calibrated crop parameters are adequate for scenario analysis as most di.erences between years and fertilization levels were reproduced by the model and .nal AGB and cumulative UPTK were also correctly simulated.
2006-09-28
ELSEVIER SCIENCE BV
JRC31490
https://publications.jrc.ec.europa.eu/repository/handle/JRC31490,   
10.1016/j.envsoft.2005.05.006,   
Language Citation
NameCountryCityType
Datasets
IDTitlePublic URL
Dataset collections
IDAcronymTitlePublic URL
Scripts / source codes
DescriptionPublic URL
Additional supporting files
File nameDescriptionFile type 
Show metadata record  Copy citation url to clipboard  Download BibTeX
Items published in the JRC Publications Repository are protected by copyright, with all rights reserved, unless otherwise indicated. Additional information: https://ec.europa.eu/info/legal-notice_en#copyright-notice