Nonlinear models to describe height and diameter of sugarcane RB92579 variety
ABSTRACT Brazil is the world’s largest sugarcane producer (Saccharum spp.), followed by India and China. In 2019, Brazil produced 642.7 million tons of sugarcane, having collected 1.44 billion and 983.52 million dollars from sugar and ethanol exports, respectively. For crop management, it is importa...
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| Format: | Article |
| Language: | English |
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Universidade Federal do Ceará
2020-10-01
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| Series: | Revista Ciência Agronômica |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400402&tlng=en |
| _version_ | 1818947491392913408 |
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| author | Sérgio Alberto Jane Felipe Augusto Fernandes Joel Augusto Muniz Tales Jesus Fernandes |
| author_facet | Sérgio Alberto Jane Felipe Augusto Fernandes Joel Augusto Muniz Tales Jesus Fernandes |
| author_sort | Sérgio Alberto Jane |
| collection | DOAJ |
| description | ABSTRACT Brazil is the world’s largest sugarcane producer (Saccharum spp.), followed by India and China. In 2019, Brazil produced 642.7 million tons of sugarcane, having collected 1.44 billion and 983.52 million dollars from sugar and ethanol exports, respectively. For crop management, it is important to monitor plant growth, duration of growth phases and point of physiological maturation. The aim of this study was to evaluate the fit of nonlinear Logistic, Gompertz, Brody and von Bertalanffy models to the height and diameter growth of ratoon cane stalk RB92579 variety, considering age in days. The parameters of models were estimated using R software routines, applying the least squares method and the iterative Gauss-Newton process. The adjustment of models was compared using the following evaluators: determination coefficient (R2), residual standard deviation (RSD) and corrected Akaike information criterion (AICc). In all models, parameters were significant by the t test at 1% level, except for the Brody model. When using the Shapiro-Wilk, Durbin-Watson and Breusch-Pagan tests, it was found that residues were normal, homoscedastic and independent at 1% significance level. All models fitted well to data, except for the Brody model for stalk height. Based on results, the Gompertz and Logistic models presented higher R2 values and lower RSD and AICc values; thus, it could be concluded that these models are suitable to describe the height and diameter of sugarcane RB92579 cultivar, respectively. |
| first_indexed | 2024-12-20T08:31:45Z |
| format | Article |
| id | doaj.art-57a1aa8a053c421f8cdb577bff2d7101 |
| institution | Directory Open Access Journal |
| issn | 1806-6690 |
| language | English |
| last_indexed | 2024-12-20T08:31:45Z |
| publishDate | 2020-10-01 |
| publisher | Universidade Federal do Ceará |
| record_format | Article |
| series | Revista Ciência Agronômica |
| spelling | doaj.art-57a1aa8a053c421f8cdb577bff2d71012022-12-21T19:46:41ZengUniversidade Federal do CearáRevista Ciência Agronômica1806-66902020-10-0151410.5935/1806-6690.20200062Nonlinear models to describe height and diameter of sugarcane RB92579 varietySérgio Alberto Janehttps://orcid.org/0000-0001-9666-8117Felipe Augusto Fernandeshttps://orcid.org/0000-0003-2552-3433Joel Augusto Munizhttps://orcid.org/0000-0002-1069-4136Tales Jesus Fernandeshttps://orcid.org/0000-0002-1457-9653ABSTRACT Brazil is the world’s largest sugarcane producer (Saccharum spp.), followed by India and China. In 2019, Brazil produced 642.7 million tons of sugarcane, having collected 1.44 billion and 983.52 million dollars from sugar and ethanol exports, respectively. For crop management, it is important to monitor plant growth, duration of growth phases and point of physiological maturation. The aim of this study was to evaluate the fit of nonlinear Logistic, Gompertz, Brody and von Bertalanffy models to the height and diameter growth of ratoon cane stalk RB92579 variety, considering age in days. The parameters of models were estimated using R software routines, applying the least squares method and the iterative Gauss-Newton process. The adjustment of models was compared using the following evaluators: determination coefficient (R2), residual standard deviation (RSD) and corrected Akaike information criterion (AICc). In all models, parameters were significant by the t test at 1% level, except for the Brody model. When using the Shapiro-Wilk, Durbin-Watson and Breusch-Pagan tests, it was found that residues were normal, homoscedastic and independent at 1% significance level. All models fitted well to data, except for the Brody model for stalk height. Based on results, the Gompertz and Logistic models presented higher R2 values and lower RSD and AICc values; thus, it could be concluded that these models are suitable to describe the height and diameter of sugarcane RB92579 cultivar, respectively.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400402&tlng=enGrowth curvesLogisticGompertz |
| spellingShingle | Sérgio Alberto Jane Felipe Augusto Fernandes Joel Augusto Muniz Tales Jesus Fernandes Nonlinear models to describe height and diameter of sugarcane RB92579 variety Revista Ciência Agronômica Growth curves Logistic Gompertz |
| title | Nonlinear models to describe height and diameter of sugarcane RB92579 variety |
| title_full | Nonlinear models to describe height and diameter of sugarcane RB92579 variety |
| title_fullStr | Nonlinear models to describe height and diameter of sugarcane RB92579 variety |
| title_full_unstemmed | Nonlinear models to describe height and diameter of sugarcane RB92579 variety |
| title_short | Nonlinear models to describe height and diameter of sugarcane RB92579 variety |
| title_sort | nonlinear models to describe height and diameter of sugarcane rb92579 variety |
| topic | Growth curves Logistic Gompertz |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000400402&tlng=en |
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