Please use this identifier to cite or link to this item:
Title: Process-based simple model for simulating sugarcane growth and production.
Authors: MARIN, F. R.
Affiliation: FABIO RICARDO MARIN, CNPTIA; JAMES W. JONES, University of Florida.
Date Issued: 2014
Citation: Scientia agrícola, Piracicaba, v. 71, n. 1, p. 1-16, Jan./Feb. 2014.
Description: ABSTRACT: Dynamic simulation models can increase research efficiency and improve risk management of agriculture. Crop models are still little used for sugarcane (Saccharum spp.) because the lack of understanding of their capabilities and limitations, lack of experience in calibrating them, difficulties in evaluating and using models, and a general lack of model credibility. This pa- per describes the biophysics and shows a statistical evaluation of a simple sugarcane process-based model coupled with a routine for model calibration. Classical crop model approaches were used as a framework for this model, and fitted algorithms for simulating sucrose accumulation and leaf development driven by a source-sink approach were proposed. The model was evalu- ated using data from five growing seasons at four locations in Brazil, where crops received adequate nutrients and good weed control. Thirteen of the 27 parameters were optimized using a Generalized Likelihood Uncertainty Estimation algorithm using the leave-one-out cross-validation technique. Model predictions were evaluated using measured data of leaf area index, stalk and aerial dry mass, and sucrose content, using bias, root mean squared error, modeling efficiency, correlation coefficient and agreement index. The model well simulated the sugarcane crop in Southern Brazil, using the parameterization reported here. Predictions were best for stalk dry mass, followed by leaf area index and then sucrose content in stalk fresh mass.
NAL Thesaurus: Simulation models
Keywords: Modelos de simulação
Language: en
Type of Material: Artigo de periódico
Access: openAccess
Appears in Collections:Artigo em periódico indexado (CNPTIA)

Files in This Item:
File Description SizeFormat 
ModeloStocropcane.pdf1,91 MBAdobe PDFThumbnail

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace