Advanced search
Start date
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Sugarcane model intercomparison: Structural differences and uncertainties under current and potential future climates

Full text
Marin, Fabio R. [1] ; Thorburn, Peter J. [2] ; Nassif, Daniel S. P. [1] ; Costa, Leandro G. [1]
Total Authors: 4
[1] Univ Sao Paulo, Luiz de Queiroz Coll Agr ESALQ, BR-13418900 Piracicaba, SP - Brazil
[2] CSIRO, Agr Flagship, Brisbane, Qld 4001 - Australia
Total Affiliations: 2
Document type: Journal article
Source: ENVIRONMENTAL MODELLING & SOFTWARE; v. 72, p. 372-386, OCT 2015.
Web of Science Citations: 22

Sugarcane is one of the world's main carbohydrates sources. We analysed the APSIM-Sugar (AS) and DSSAT/CANEGRO (DC) models to determine their structural differences, and how these differences affect their predictions of crop growth and production. The AS model under predicted yield at the hotter sites, because the algorithm for computing the degree-days is based in only one upper cardinal temperature. The models did not accurately predict canopy and stalk development through time using growth parameters values developed from observed data, in combination with previously determined RUE for the cultivars. In response to elevated CO2, both predicted higher yields, although AS showed higher sensitivity to CO2 concentration, rainfall and temperature than DC. The Mean of simulations from both models produced better estimations than predictions from either model individually. Thus, applying the two models (in their current form) is likely to give the more accurate predictions than focusing on one model alone. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 11/18072-2 - Evapotranspiration, transpiration and gas exchange in irrigated sugarcane field
Grantee:Daniel Silveira Pinto Nassif
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/16511-4 - Influence of crop residues on water consumption, growth and yield of irrigated sugarcane
Grantee:Leandro Garcia da Costa
Support type: Scholarships in Brazil - Doctorate