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

New APSIM-Sugar features and parameters required to account for high sugarcane yields in tropical environments

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Author(s):
Dias, Henrique Boriolo [1] ; Inman-Bamber, Geoff [2] ; Bermejo, Rodrigo [3] ; Sentelhas, Paulo Cesar [1] ; Christodoulou, Diomedes [4]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Luiz de Queiroz Coll Agr, BR-13418900 Piracicaba, SP - Brazil
[2] James Cook Univ, Coll Sci Technol & Engn, Townsville, Qld 4811 - Australia
[3] Alvean, BR-01311000 Sao Paulo, SP - Brazil
[4] Gordian Energy & Terracal Alimentos & Bioenergia, BR-22640100 Barra Da Tijuca, RJ - Brazil
Total Affiliations: 4
Document type: Journal article
Source: FIELD CROPS RESEARCH; v. 235, p. 38-53, APR 1 2019.
Web of Science Citations: 2
Abstract

Sugarcane in field plot experiments in tropical Brazil (Guadalupe, Piaui State, 6.6 degrees S), produced very high yields under non-limiting water and nutrients. Mean stalk dry mass at 8, 11.5 and 15 months were 40, 51 and 70 t/ha respectively for six varieties and six planting dates. These yields were explained by high but not excessive temperatures allowing the canopy to close after 73 days on average. Substantial changes were required to enable the APSIM-Sugar model to simulate canopy and yield gain processes in Brazilian genotypes for the purpose of optimising variety, planting and harvest date options. A new modelling feature was proposed to deal with the observed growth slowdown when crop was about 7-8 months old and dry mass yields higher than 40 t/ha. All new parameters and features were validated with independent experiments as well as with the original dataset used for developing APSIM-Sugar. Future studies involving irrigation, yield gap analysis and climate change in environments where high yields are expected, should consider these modifications. (AU)

FAPESP's process: 17/24424-5 - Developing trait parameters in the APSIM-Sugar model for Brazilian sugarcane varieties and their use to optimize the genotype x environment x management interaction for yield and quality
Grantee:Henrique Boriolo Dias
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 16/11170-2 - Multi-model approach to sugarcane yield forecasting and assessment of crop performance under current and future climate conditions
Grantee:Henrique Boriolo Dias
Support Opportunities: Scholarships in Brazil - Doctorate