|
|
Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
09/11/2021 |
Data da última atualização: |
09/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
GUARESCH, R. F.; SILVA, E. P. da; URQUIAGA, S.; ALVES, B. J. R.; BODDEY, R. M.; SARKIS, L. F.; JANTALIA, C. P. |
Afiliação: |
RONI FERNANDES GUARESCHI, UFRRJ; ELDERSON PEREIRA DA SILVA, UFRRJ; SEGUNDO SACRAMENTO U CABALLERO, CNPAB; BRUNO JOSE RODRIGUES ALVES, CNPAB; ROBERT MICHAEL BODDEY, CNPAB; LEONARDO FERNANDES SARKIS, UFRRJ; CLAUDIA POZZI JANTALIA, CNPAB. |
Título: |
Energy efficiency in maize crops in different regions of Brazil. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Semina: Ciências Agrárias, v. 42, n. 4, p. 2271-2292, 2021. |
DOI: |
10.5433/1679-0359.2021v42n4p2271 |
Idioma: |
Inglês |
Conteúdo: |
Assessment of energy efficiency (EE) enables the evaluation of the sustainability of agrosystems, as well as decision-making regarding reduction in production costs and environmental pollution and even to increase production in a sustainable way. In this context, the objective of this study was to assess energy efficiency in maize in different regions of Brazil. For this purpose, 32 areas of maize crop distributed across the major producing states and regions were assessed. Energy inputs and outputs of agricultural operations and/or agricultural inputs were calculated by multiplying the amount used by their calorific value or energy coefficient at each stage of production. Energy efficiency was calculated as the ratio between the total output energy and the total input energy during the production process. For every megajoule (MJ) of energy consumed in the production of second-crop maize and first-crop maize seasons, 9.9 and 8.7 MJ respectively of renewable energy were produced in the form of grain. In both maize cropping seasons, most of the energy use was attributed to fertilizers, herbicides and fuel. To be representative the evaluation of energy efficiency of the maize crop should be performed in different Brazilian cultivation regions, as it will represent different edaphoclimatic and management conditions spread over the national territory within an agricultural year. |
Palavras-Chave: |
Brazilian territory; Energy consumption. |
Thesagro: |
Zea Mays. |
Thesaurus Nal: |
Grain yield. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/227577/1/Energy-efficiency-in-maize-crops-in-different-regions-of-Brazil.pdf
|
Marc: |
LEADER 02133naa a2200253 a 4500 001 2135963 005 2021-11-09 008 2021 bl uuuu u00u1 u #d 024 7 $a10.5433/1679-0359.2021v42n4p2271$2DOI 100 1 $aGUARESCH, R. F. 245 $aEnergy efficiency in maize crops in different regions of Brazil.$h[electronic resource] 260 $c2021 520 $aAssessment of energy efficiency (EE) enables the evaluation of the sustainability of agrosystems, as well as decision-making regarding reduction in production costs and environmental pollution and even to increase production in a sustainable way. In this context, the objective of this study was to assess energy efficiency in maize in different regions of Brazil. For this purpose, 32 areas of maize crop distributed across the major producing states and regions were assessed. Energy inputs and outputs of agricultural operations and/or agricultural inputs were calculated by multiplying the amount used by their calorific value or energy coefficient at each stage of production. Energy efficiency was calculated as the ratio between the total output energy and the total input energy during the production process. For every megajoule (MJ) of energy consumed in the production of second-crop maize and first-crop maize seasons, 9.9 and 8.7 MJ respectively of renewable energy were produced in the form of grain. In both maize cropping seasons, most of the energy use was attributed to fertilizers, herbicides and fuel. To be representative the evaluation of energy efficiency of the maize crop should be performed in different Brazilian cultivation regions, as it will represent different edaphoclimatic and management conditions spread over the national territory within an agricultural year. 650 $aGrain yield 650 $aZea Mays 653 $aBrazilian territory 653 $aEnergy consumption 700 1 $aSILVA, E. P. da 700 1 $aURQUIAGA, S. 700 1 $aALVES, B. J. R. 700 1 $aBODDEY, R. M. 700 1 $aSARKIS, L. F. 700 1 $aJANTALIA, C. P. 773 $tSemina: Ciências Agrárias$gv. 42, n. 4, p. 2271-2292, 2021.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registro Completo
Biblioteca(s): |
Embrapa Agroindústria Tropical. |
Data corrente: |
12/06/2003 |
Data da última atualização: |
02/08/2011 |
Autoria: |
AGUIAR, M. de J. N.; BRAGA, C. C.; BRITO, J. I. B. de; VAREJAO-SILVA, M. A.; BARROS, A. H. C.; CAVALCANTI, A. C.; NOGUEIRA, L. R. Q.; SILVA, F. B. R. e; COSTA, C. A. R. da; SILVA, D. F. da; SILVA, E. D. V.; PEREIRA, R. C. |
Título: |
Zoneamento pedoclimático para a cultura do cajueiro (Anacardium occidentale L.) no Estado do Maranhão. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
Fortaleza: Embrapa Agroindustria Tropical,2000; Recife: Embrapa Solos-ERP-NE, 2000. |
Páginas: |
30 p. |
Série: |
(Embrapa Agroindustria Tropical. Boletim de Pesquisa, 38). |
Idioma: |
Português |
Notas: |
Acompanha mapa escala 1:1.000.000 |
Conteúdo: |
Exigencias da cultura; Zoneamento climatico, parametros climaticos, precipitaçao, temperatura do ar, balanço hidrico; Carta do zoneamento climatico; Zoneamento pedologico. |
Palavras-Chave: |
Clima - Brasil - Maranhao; Zoneamento. |
Thesagro: |
Caju. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPAT-2010/7291/1/Bp-038.pdf
|
Marc: |
LEADER 01172nam a2200313 a 4500 001 1424608 005 2011-08-02 008 2000 bl uuuu u0uu1 u #d 100 1 $aAGUIAR, M. de J. N. 245 $aZoneamento pedoclimático para a cultura do cajueiro (Anacardium occidentale L.) no Estado do Maranhão. 260 $aFortaleza: Embrapa Agroindustria Tropical,2000; Recife: Embrapa Solos-ERP-NE$c2000 300 $a30 p. 490 $a(Embrapa Agroindustria Tropical. Boletim de Pesquisa, 38). 500 $aAcompanha mapa escala 1:1.000.000 520 $aExigencias da cultura; Zoneamento climatico, parametros climaticos, precipitaçao, temperatura do ar, balanço hidrico; Carta do zoneamento climatico; Zoneamento pedologico. 650 $aCaju 653 $aClima - Brasil - Maranhao 653 $aZoneamento 700 1 $aBRAGA, C. C. 700 1 $aBRITO, J. I. B. de 700 1 $aVAREJAO-SILVA, M. A. 700 1 $aBARROS, A. H. C. 700 1 $aCAVALCANTI, A. C. 700 1 $aNOGUEIRA, L. R. Q. 700 1 $aSILVA, F. B. R. e 700 1 $aCOSTA, C. A. R. da 700 1 $aSILVA, D. F. da 700 1 $aSILVA, E. D. V. 700 1 $aPEREIRA, R. C.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Agroindústria Tropical (CNPAT) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|