Statistical evaluation of the PHYGROW model: a case study in Ceará State, Brazil
ABSTRACT This study was carried out to statistically evaluate the performance of the PHYGROW model in simulating the growth of corn and sorghum plants in different locations in the semi-arid region of Ceará State, Brazil. Corn and sorghum production data were obtained in seven macro-regions, where t...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Minas Gerais
2025-07-01
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| Series: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352025000400500&lng=en&tlng=en |
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| author | S.R. Maranhão E.C. Santos M.J.D. Cândido R.G. Silva A.C.R. Cavalcante |
| author_facet | S.R. Maranhão E.C. Santos M.J.D. Cândido R.G. Silva A.C.R. Cavalcante |
| author_sort | S.R. Maranhão |
| collection | DOAJ |
| description | ABSTRACT This study was carried out to statistically evaluate the performance of the PHYGROW model in simulating the growth of corn and sorghum plants in different locations in the semi-arid region of Ceará State, Brazil. Corn and sorghum production data were obtained in seven macro-regions, where the characterization of ecological sites was previously performed using soil and vegetation information for model parameterization. Biomass production data were collected in the 2021 and 2022 rainy seasons. The obtained models were statistically analyzed by the following estimators: estimation bias (BIAS), mean absolute error (MAE), estimation efficiency (EE) and Willmott’s index of agreement (d). The results showed the suitability of the PHYGROW model to simulate the growth of corn and sorghum crops in different semi-arid regions of Ceará State; however, the statistical estimators stressed the need for a larger database to improve forecast accuracy. |
| format | Article |
| id | doaj-art-dd8827fe84bd4f0cb8bf82f497a600cf |
| institution | DOAJ |
| issn | 1678-4162 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Universidade Federal de Minas Gerais |
| record_format | Article |
| series | Arquivo Brasileiro de Medicina Veterinária e Zootecnia |
| spelling | doaj-art-dd8827fe84bd4f0cb8bf82f497a600cf2025-08-20T03:11:46ZengUniversidade Federal de Minas GeraisArquivo Brasileiro de Medicina Veterinária e Zootecnia1678-41622025-07-0177410.1590/1678-4162-13303Statistical evaluation of the PHYGROW model: a case study in Ceará State, BrazilS.R. Maranhãohttps://orcid.org/0000-0002-9945-9529E.C. Santoshttps://orcid.org/0000-0003-3218-1865M.J.D. Cândidohttps://orcid.org/0000-0003-3573-6053R.G. Silvahttps://orcid.org/0000-0002-0062-7554A.C.R. Cavalcantehttps://orcid.org/0000-0002-9685-569XABSTRACT This study was carried out to statistically evaluate the performance of the PHYGROW model in simulating the growth of corn and sorghum plants in different locations in the semi-arid region of Ceará State, Brazil. Corn and sorghum production data were obtained in seven macro-regions, where the characterization of ecological sites was previously performed using soil and vegetation information for model parameterization. Biomass production data were collected in the 2021 and 2022 rainy seasons. The obtained models were statistically analyzed by the following estimators: estimation bias (BIAS), mean absolute error (MAE), estimation efficiency (EE) and Willmott’s index of agreement (d). The results showed the suitability of the PHYGROW model to simulate the growth of corn and sorghum crops in different semi-arid regions of Ceará State; however, the statistical estimators stressed the need for a larger database to improve forecast accuracy.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352025000400500&lng=en&tlng=enmathematical estimatorsmechanistic modellingrainfed crops |
| spellingShingle | S.R. Maranhão E.C. Santos M.J.D. Cândido R.G. Silva A.C.R. Cavalcante Statistical evaluation of the PHYGROW model: a case study in Ceará State, Brazil Arquivo Brasileiro de Medicina Veterinária e Zootecnia mathematical estimators mechanistic modelling rainfed crops |
| title | Statistical evaluation of the PHYGROW model: a case study in Ceará State, Brazil |
| title_full | Statistical evaluation of the PHYGROW model: a case study in Ceará State, Brazil |
| title_fullStr | Statistical evaluation of the PHYGROW model: a case study in Ceará State, Brazil |
| title_full_unstemmed | Statistical evaluation of the PHYGROW model: a case study in Ceará State, Brazil |
| title_short | Statistical evaluation of the PHYGROW model: a case study in Ceará State, Brazil |
| title_sort | statistical evaluation of the phygrow model a case study in ceara state brazil |
| topic | mathematical estimators mechanistic modelling rainfed crops |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352025000400500&lng=en&tlng=en |
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