Algumas relacoes entre variáveis climáticas e a producao de cacau da Fazenda Unitária do Centro de Pesquisas de Cacau, Bahia, Brasil
The objective of this work is to study the cacao production-weather relationships of a farm during eleven agricultural years (1970/71 to 1980/81). Initially linear correlations between the monthly cacao production and different climatic factors lagged in time were studied. In addition, linear correlations between the cacao crop and climatic factors observed monthly of a year earlier were studied. A set of eight climatic variables represented by climatic factors or linear combinations of these was chosen by maximum correlation. Afterwards the best subset of these variables in regression was selected. The criteria for determining the best subset regression were the maximum determination coefficient (R2), maximum adjusted coefficient (R2a) and CP statistics of Mallows.
| Main Authors: | , , |
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| Format: | biblioteca |
| Published: |
1984
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| Subjects: | THEOBROMA CACAO, PRONOSTICO DEL RENDIMIENTO, MODELOS, DAÑOS, FACTORES AMBIENTALES, CAMBIO CLIMÁTICO, BAHIA, BRASIL, |
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| Summary: | The objective of this work is to study the cacao production-weather relationships of a farm during eleven agricultural years (1970/71 to 1980/81). Initially linear correlations between the monthly cacao production and different climatic factors lagged in time were studied. In addition, linear correlations between the cacao crop and climatic factors observed monthly of a year earlier were studied. A set of eight climatic variables represented by climatic factors or linear combinations of these was chosen by maximum correlation. Afterwards the best subset of these variables in regression was selected. The criteria for determining the best subset regression were the maximum determination coefficient (R2), maximum adjusted coefficient (R2a) and CP statistics of Mallows. |
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