| Texto completo | |
| Autor(es): |
Dias, Henrique Boriolo
[1]
;
Inman-Bamber, Geoff
[2]
;
Everingham, Yvette
[2]
;
Sentelhas, Paulo Cesar
[1]
;
Bermejo, Rodrigo
[3]
;
Christodoulou, Diomedes
[4]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [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
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | FIELD CROPS RESEARCH; v. 249, APR 1 2020. |
| Citações Web of Science: | 0 |
| Resumo | |
Since new varieties are released continuously in the Brazilian sugarcane agro-industry, the understanding of their growth, development and yields are necessary. In Brazil, there is a lack of studies on sugarcane variety traits for canopy development and yields, especially those employed by the sugarcane modelling community. This paper assessed the canopy development and light interception by 27 sugarcane varieties grown at two tropical sites (Sao Romao, MG, and Guadalupe, PI) under non-limiting (potential) conditions in Brazil and tested the capability of the well-known APSIM-Sugar model to distinguish these varieties. Parameters for APSIM-Sugar canopy traits (leaf size, green leaf number, tillering and stalk emergence) and the light extinction coefficient were derived for each variety from field experiments and by calibration for the plant cane cycle. Trait parameters were then validated satisfactorily against independent datasets from the same two sites (first racoon cycle of 27 varieties) and a row spacing experiment at Sao Romao (plant and racoon for six varieties). A validation was also done using published experiments in other five sites across Brazil (four varieties). After APSIM-Sugar parameters were calibrated and validated, long-term simulations were run for each variety at the two sites. APSIM-Sugar outputs of thermal time to reach 50% of canopy closure were employed to group the varieties in terms of canopy formation by clustering analysis. The four major clusters corresponded well with promotional information from breeding companies in Brazil about canopy formation. These findings suggest it is reasonable to hypothesise that the APSIM-Sugar parameters are plausible and are an important step for unravelling genetic x environment x management interactions to improve yields and quality in the Brazilian sugarcane agro-industry. (AU) | |
| Processo FAPESP: | 17/24424-5 - Desenvolvimento de parâmetros do modelo APSIM-Sugar para variedades brasileiras de cana-de-açúcar e seu uso para otimizar a interação genótipo x ambiente x manejo visando produtividade e qualidade |
| Beneficiário: | Henrique Boriolo Dias |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |
| Processo FAPESP: | 16/11170-2 - Abordagem multimodelos para previsão da produtividade da cana-de-açúcar e avaliação do desempenho da cultura sob condições climáticas atuais e futuras |
| Beneficiário: | Henrique Boriolo Dias |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |