climate change and climatic zoning of maize in the south of Brazil
Abstract: Maize is a crop of high economic and social importance in Brazil. The objective of this study is to determine the impacts of climate change on climatic zoning, i.e., to define aptitude classes for cultivation and the periods recommended for the sowing times of the maize in rainfed conditio...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | Brasil |
| Institución: | Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina (Epagri) |
| Repositorio: | Agropecuária Catarinense (Online) |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs2.10.20.5.244:article/160 |
| Acceso en línea: | https://publicacoes.epagri.sc.gov.br/rac/article/view/160 |
| Access Level: | acceso abierto |
| Palabra clave: | Frost temperature Precis sowing time. Geada temperatura época de semeadura |
| Sumario: | Abstract: Maize is a crop of high economic and social importance in Brazil. The objective of this study is to determine the impacts of climate change on climatic zoning, i.e., to define aptitude classes for cultivation and the periods recommended for the sowing times of the maize in rainfed conditions for the period 2071 to 2100 in the states of Paraná, Santa Catarina and Rio Grande do Sul, in the south of Brazil. Three climate scenarios were used to evaluate the potential impact of climate change on climatic zoning of maize: current (baseline - 1961-1990) and predicted future climatic conditions (2071-2100) (A2 and B2). The climatic zoning for the three scenarios (current, A2 and B2) were elaborated with the following aptitude classes: suitable and unsuitable for crop cultivation. There was a significant temporal change of recommended sowing time by climatic zoning for maize in the future scenarios, both optimistic (B2) and pessimistic (A2). In future scenarios, the occurrence of frost remains the climatic variable that determines the recommended sowing time period in the States of Santa Catarina and Rio Grande do Sul, Brazil. However, in Paraná there was a change and the water requirement satisfaction index became the variable that determines the recommended sowing time period for maize. |
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