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| Marin,Fábio Ricardo; Lopes-Assad,Maria Leonor; Assad,Eduardo Delgado; Vian,Carlos Eduardo; Santos,Marcelo Cabral. |
| A conceptual framework for crop production efficiency was derived using thermodynamic efficiency concept, in order to generate a tool for performance evaluation of agricultural systems and to quantify the interference of determining factors on this performance. In Thermodynamics, efficiency is the ratio between the output and input of energy. To establish this relationship in agricultural systems, it was assumed that the input energy is represented by the attainable crop yield, as predicted through simulation models based on environmental variables. The method of FAO's agroecological zones was applied to the assessment of the attainable sugarcane yield, while Instituto Brasileiro de Geografia e Estatística (IBGE) data were used as observed yield. Sugarcane... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum; Pedological aptitude; Geoprocessing; Agrometeorological modeling. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008001100002 |
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