Data/hora: 06/06/2024 00:36:01

Provedor de dados: | Engenharia Agrícola
País: | Brazil
Título: | Energy demand in citrus production under varied operational efficiency values
Autores: | Franco Junior,Nelson C.; Milan,Marcos; Romanelli,Thiago L.
Data: | 2014-08-01
Ano: | 2014
Palavras-chave: | Energy balance; EROI; Machinery management; Sustainability.
Resumo: | Citrus orchards are very important in Brazil, especially in São Paulo State, where occupy an area of 600,000 ha approximately. To identify sustainability degree of citrus production system, an energy analysis allows evaluating efficiency of direct and indirect applied inputs. Thus, this study aimed to evaluate citrus production system under energetic point of view, in which invested energy is paid back with citrus production; being compared within three scenarios for operational field efficiency. As result, by sensitivity analysis was determined that fuel was the main energy demander, followed by pesticides and fertilizers. In operational work capacity analysis, all combinations between efficiency (minimum, typical and maximum) and yield levels became positive in the seventh year, except for the combination minimum efficiency and 10 % less yield, positive in the eighth year. The best combination (maximum efficiency and 10 % more yield) has promoted investment payoff around the sixth and seventh year. By this study, it is possible to determine the total energy demand to produce citrus and indentify the applied inputs that need more attention by the decision-makers. Labor and seedlings can be ommited for further studies with citrus, since they were irrelevant. Management of agricultural machinery may pose an important role on decreasing environmental impact of citrus production.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000400014
Editor: | Associação Brasileira de Engenharia Agrícola
Relação: | 10.1590/S0100-69162014000400014
Formato: | text/html
Fonte: | Engenharia Agrícola  v.34 n.4 2014
Fonte: | info:eu-repo/semantics/openAccess