Encontro de Energia no Meio Rural

Resumo

CAMPOS, Alessandro Torres, SAGLIETTI, José Roberto Corrêa, CAMPOS, Aloísio Torres de et al. Energy use and sustainability in hay production in a intensive system of milk production. In Anais do 5º Encontro de Energia no Meio Rural, 2004, Campinas (SP) [online]. 2004 [citado 04 Maio 2024]. Disponível em: <http://www.proceedings.scielo.br/scielo.php?script=sci_arttext&pid=MSC0000000022004000200061&lng=pt&nrm=iso> .

The aim of this work was to valuate the energy balance and the sustainability in the hay production through seven years data from a Intensive System of Milk Production, located in the region of Coronel Pacheco/MG Brasil. To the energy matrix determination, the categories of direct and indirect energy were considered. The energy inputs occurred in the implanting and establishing of the crop were distributed in the years considered as useful life. The direct energy, relative to the inputs, had larger participation that the indirect one, being the percentiles found of 93.05 and 6.95, respectively. The main consumer of indirect energy was the tractor, which turns on all the implements, followed by the irrigation system. The estimated energy efficiency by the process was of 3.19. Most of the used direct energy was that derived from fossil resources, in the form of fuel (diesel). The use of organic fertilizer, of poultry litter, promoted a relative reduction in the consumption of energy originated from fertilizer derived from fossil resources. With the obtained results, it was concluded that, despite of the several sources of energy consumption, the production of alfalfa hay is sustainable and efficient in the energy conversion.

Palavras-chave : Balanço de energia; eficiência energética; infra-estrutura rural; sustentabilidade da agricultura.