Energy balance of irrigated maize silage
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Ciência Rural |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000500351 |
Resumo: | ABSTRACT: The aim of the present study is to evaluate the energy balance and energy efficiency of the silage maize crop in the Center for Research, Development and Technology Transfer of the Universidade Federal de Lavras (CDTT-UFLA). The crop was irrigated by center pivot and the stages of maize cultivation and energy inputs were monitored for the 1st and 2nd crops of the 2014/2015 harvest. Results from the energy analysis showed the crop had a total energy input of 45,643.85 MJ ha-1 and 47,303.60 MJ ha-1 for the 1st and 2nd crops and a significant predominance of direct energy type (about 92% of the matrix). Regarding direct energy inputs, the diesel oil was the most representative, contributing with approximately 38% of the total energy demand. Conversely, the irrigation system contribute with 3.92% e 5.97% in the 1st and 2nd crops, representing the largest indirect energy input. Nevertheless, irrigation and crop management allowed the system achieving high levels of productivity, resulting in an energy efficiency of 25.1 and 28.1 for the first and second crops respectively. |
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Ciência rural (Online) |
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Energy balance of irrigated maize silageenergy efficiencyenergy in agriculturecenter pivotsustainabilityABSTRACT: The aim of the present study is to evaluate the energy balance and energy efficiency of the silage maize crop in the Center for Research, Development and Technology Transfer of the Universidade Federal de Lavras (CDTT-UFLA). The crop was irrigated by center pivot and the stages of maize cultivation and energy inputs were monitored for the 1st and 2nd crops of the 2014/2015 harvest. Results from the energy analysis showed the crop had a total energy input of 45,643.85 MJ ha-1 and 47,303.60 MJ ha-1 for the 1st and 2nd crops and a significant predominance of direct energy type (about 92% of the matrix). Regarding direct energy inputs, the diesel oil was the most representative, contributing with approximately 38% of the total energy demand. Conversely, the irrigation system contribute with 3.92% e 5.97% in the 1st and 2nd crops, representing the largest indirect energy input. Nevertheless, irrigation and crop management allowed the system achieving high levels of productivity, resulting in an energy efficiency of 25.1 and 28.1 for the first and second crops respectively.Universidade Federal de Santa Maria2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000500351Ciência Rural v.48 n.5 2018reponame:Ciência Ruralinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM10.1590/0103-8478cr20170625info:eu-repo/semantics/openAccessFerreira,Tomás de AquinoFerreira,Sílvia CostaBarbosa,Jackson AntônioVolpato,Carlos Eduardo SilvaFerreira,Rute CostaSilva,Marielle Jordane daBarbosa,Leonardo Maiaeng2018-05-07T00:00:00ZRevista |
dc.title.none.fl_str_mv |
Energy balance of irrigated maize silage |
title |
Energy balance of irrigated maize silage |
spellingShingle |
Energy balance of irrigated maize silage Ferreira,Tomás de Aquino energy efficiency energy in agriculture center pivot sustainability |
title_short |
Energy balance of irrigated maize silage |
title_full |
Energy balance of irrigated maize silage |
title_fullStr |
Energy balance of irrigated maize silage |
title_full_unstemmed |
Energy balance of irrigated maize silage |
title_sort |
Energy balance of irrigated maize silage |
author |
Ferreira,Tomás de Aquino |
author_facet |
Ferreira,Tomás de Aquino Ferreira,Sílvia Costa Barbosa,Jackson Antônio Volpato,Carlos Eduardo Silva Ferreira,Rute Costa Silva,Marielle Jordane da Barbosa,Leonardo Maia |
author_role |
author |
author2 |
Ferreira,Sílvia Costa Barbosa,Jackson Antônio Volpato,Carlos Eduardo Silva Ferreira,Rute Costa Silva,Marielle Jordane da Barbosa,Leonardo Maia |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Ferreira,Tomás de Aquino Ferreira,Sílvia Costa Barbosa,Jackson Antônio Volpato,Carlos Eduardo Silva Ferreira,Rute Costa Silva,Marielle Jordane da Barbosa,Leonardo Maia |
dc.subject.por.fl_str_mv |
energy efficiency energy in agriculture center pivot sustainability |
topic |
energy efficiency energy in agriculture center pivot sustainability |
description |
ABSTRACT: The aim of the present study is to evaluate the energy balance and energy efficiency of the silage maize crop in the Center for Research, Development and Technology Transfer of the Universidade Federal de Lavras (CDTT-UFLA). The crop was irrigated by center pivot and the stages of maize cultivation and energy inputs were monitored for the 1st and 2nd crops of the 2014/2015 harvest. Results from the energy analysis showed the crop had a total energy input of 45,643.85 MJ ha-1 and 47,303.60 MJ ha-1 for the 1st and 2nd crops and a significant predominance of direct energy type (about 92% of the matrix). Regarding direct energy inputs, the diesel oil was the most representative, contributing with approximately 38% of the total energy demand. Conversely, the irrigation system contribute with 3.92% e 5.97% in the 1st and 2nd crops, representing the largest indirect energy input. Nevertheless, irrigation and crop management allowed the system achieving high levels of productivity, resulting in an energy efficiency of 25.1 and 28.1 for the first and second crops respectively. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000500351 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000500351 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0103-8478cr20170625 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
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.48 n.5 2018 reponame:Ciência Rural instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Rural |
collection |
Ciência Rural |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1749140552524234752 |