Energy flows in lowland soybean production system in Brazil

Detalhes bibliográficos
Autor(a) principal: Andrea,Maria Carolina da Silva
Data de Publicação: 2016
Outros Autores: Romanelli,Thiago Libório, Molin,José Paulo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ciência Rural
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000801395
Resumo: ABSTRACT: Soybean is the main product of Brazilian agribusiness, both production and income. Considering the increase in food and energy demand and the search for more sustainable production systems, this study aimed to analyze inputs and energy use of a possible area of expansion of soybean production: a system under sub irrigation management located in a lowland area of Cerrado biome, northern region of Brazil. Its environmental performance was compared to other Brazilian locations among them traditionally soybean producers. The evaluation and comparison was made through material and energy flow tools in order to determine the inputs embodied per area, as well as energy demand, availability and efficiency in the analyzed production system. Energy demand (IE) and energy availability (OE) of the analyzed production system were 7.6 and 57.1 GJ ha-1, respectively. Energy balance (EB) was 49,5 GJ ha-1, energy return over investment (EROI) was 7.5 and embodied energy in grains (EE) was 2,2 MJ kg-1, respectively. Highest energy consumption was due to the use of fertilizers, fuel and herbicide. The system is energy efficient, since it provides more energy than demands, and efficient when compared to usual production systems in other regions, however it is highly dependent on non-renewable energy.
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spelling Energy flows in lowland soybean production system in Brazil Glycine max (L.) Merrmaterial flowenergy balanceEROI.ABSTRACT: Soybean is the main product of Brazilian agribusiness, both production and income. Considering the increase in food and energy demand and the search for more sustainable production systems, this study aimed to analyze inputs and energy use of a possible area of expansion of soybean production: a system under sub irrigation management located in a lowland area of Cerrado biome, northern region of Brazil. Its environmental performance was compared to other Brazilian locations among them traditionally soybean producers. The evaluation and comparison was made through material and energy flow tools in order to determine the inputs embodied per area, as well as energy demand, availability and efficiency in the analyzed production system. Energy demand (IE) and energy availability (OE) of the analyzed production system were 7.6 and 57.1 GJ ha-1, respectively. Energy balance (EB) was 49,5 GJ ha-1, energy return over investment (EROI) was 7.5 and embodied energy in grains (EE) was 2,2 MJ kg-1, respectively. Highest energy consumption was due to the use of fertilizers, fuel and herbicide. The system is energy efficient, since it provides more energy than demands, and efficient when compared to usual production systems in other regions, however it is highly dependent on non-renewable energy.Universidade Federal de Santa Maria2016-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000801395Ciência Rural v.46 n.8 2016reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20151298info:eu-repo/semantics/openAccessAndrea,Maria Carolina da SilvaRomanelli,Thiago LibórioMolin,José Pauloeng2016-06-20T00:00:00ZRevista
dc.title.none.fl_str_mv Energy flows in lowland soybean production system in Brazil
title Energy flows in lowland soybean production system in Brazil
spellingShingle Energy flows in lowland soybean production system in Brazil
Andrea,Maria Carolina da Silva
Glycine max (L.) Merr
material flow
energy balance
EROI.
title_short Energy flows in lowland soybean production system in Brazil
title_full Energy flows in lowland soybean production system in Brazil
title_fullStr Energy flows in lowland soybean production system in Brazil
title_full_unstemmed Energy flows in lowland soybean production system in Brazil
title_sort Energy flows in lowland soybean production system in Brazil
author Andrea,Maria Carolina da Silva
author_facet Andrea,Maria Carolina da Silva
Romanelli,Thiago Libório
Molin,José Paulo
author_role author
author2 Romanelli,Thiago Libório
Molin,José Paulo
author2_role author
author
dc.contributor.author.fl_str_mv Andrea,Maria Carolina da Silva
Romanelli,Thiago Libório
Molin,José Paulo
dc.subject.por.fl_str_mv Glycine max (L.) Merr
material flow
energy balance
EROI.
topic Glycine max (L.) Merr
material flow
energy balance
EROI.
description ABSTRACT: Soybean is the main product of Brazilian agribusiness, both production and income. Considering the increase in food and energy demand and the search for more sustainable production systems, this study aimed to analyze inputs and energy use of a possible area of expansion of soybean production: a system under sub irrigation management located in a lowland area of Cerrado biome, northern region of Brazil. Its environmental performance was compared to other Brazilian locations among them traditionally soybean producers. The evaluation and comparison was made through material and energy flow tools in order to determine the inputs embodied per area, as well as energy demand, availability and efficiency in the analyzed production system. Energy demand (IE) and energy availability (OE) of the analyzed production system were 7.6 and 57.1 GJ ha-1, respectively. Energy balance (EB) was 49,5 GJ ha-1, energy return over investment (EROI) was 7.5 and embodied energy in grains (EE) was 2,2 MJ kg-1, respectively. Highest energy consumption was due to the use of fertilizers, fuel and herbicide. The system is energy efficient, since it provides more energy than demands, and efficient when compared to usual production systems in other regions, however it is highly dependent on non-renewable energy.
publishDate 2016
dc.date.none.fl_str_mv 2016-08-01
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000801395
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dc.language.iso.fl_str_mv eng
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dc.relation.none.fl_str_mv 10.1590/0103-8478cr20151298
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dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Rural v.46 n.8 2016
reponame:Ciência Rural
instname:Universidade Federal de Santa Maria (UFSM)
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instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
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