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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
22/09/2020 |
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Data da última atualização: |
29/09/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
XAVIER, J. H. V.; GOMES, M. C.; ANJOS, F. S. dos; SCOPEL, E.; SILVA, F. A. M. da; Marc Corbeels. |
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Afiliação: |
JOSE HUMBERTO VALADARES XAVIER, CPAC; Mário Conill Gomes; Flávio Sacco dos Anjos; ERIC SCOPEL; FERNANDO ANTONIO MACENA DA SILVA, CPAC; CORBEELS, M. |
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Título: |
Participatory multicriteria assessment of maize cropping systems in the context of family farmers in the Brazilian Cerrado. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
International Journal of Agricultural Sustainability, v. 18, n. 5, p. 410?426, 2020. |
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Páginas: |
p. 410-426 |
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Idioma: |
Português |
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Conteúdo: |
Conservation agriculture (CA) is recognized as a promising crop management strategy for sustainable agricultural intensification. The objective of this study was to evaluate CA cropping systems for rainfed maize as an alternative to the traditional tillage-based cropping systems (CT) in the context of family farms, using a multi-criteria model that represents the point of view of farmers. Farmers considered several aspects for evaluating the cropping systems, thatwere systematized in the model through five criteria (with sub-criteria): (a) costs; (b) yield; (c) labour; (d) human health and environment; and (e) production risks. CA did not differ from CT for the ?costs? criterion but was superior for the ?yield? and ?labour? criteria. In contrast, CT obtained better ratings for the criteria ?human health and environment? and ?production risks?. Considering all criteria, CA was better appraised than CT. However, a new local policy measure that subsidizes the hiring of mechanized tillage services overturns this outcome, indicating the importance of exogenous factors. Overall, the participatory processes in building the model allowed us to better understand the reasons of adoption or non-adoption of CA by small-scale farmers in the tropics. |
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Thesagro: |
Agricultura; Análise; Conservação; Milho; Sistema de Cultivo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/216142/1/Jose-Humberto-Participatory-multicriteria-assessment-of-maize-cropping-systems.pdf
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Marc: |
LEADER 02034naa a2200253 a 4500
001 2125055
005 2020-09-29
008 2020 bl uuuu u00u1 u #d
100 1 $aXAVIER, J. H. V.
245 $aParticipatory multicriteria assessment of maize cropping systems in the context of family farmers in the Brazilian Cerrado.$h[electronic resource]
260 $c2020
300 $ap. 410-426
520 $aConservation agriculture (CA) is recognized as a promising crop management strategy for sustainable agricultural intensification. The objective of this study was to evaluate CA cropping systems for rainfed maize as an alternative to the traditional tillage-based cropping systems (CT) in the context of family farms, using a multi-criteria model that represents the point of view of farmers. Farmers considered several aspects for evaluating the cropping systems, thatwere systematized in the model through five criteria (with sub-criteria): (a) costs; (b) yield; (c) labour; (d) human health and environment; and (e) production risks. CA did not differ from CT for the ?costs? criterion but was superior for the ?yield? and ?labour? criteria. In contrast, CT obtained better ratings for the criteria ?human health and environment? and ?production risks?. Considering all criteria, CA was better appraised than CT. However, a new local policy measure that subsidizes the hiring of mechanized tillage services overturns this outcome, indicating the importance of exogenous factors. Overall, the participatory processes in building the model allowed us to better understand the reasons of adoption or non-adoption of CA by small-scale farmers in the tropics.
650 $aAgricultura
650 $aAnálise
650 $aConservação
650 $aMilho
650 $aSistema de Cultivo
700 1 $aGOMES, M. C.
700 1 $aANJOS, F. S. dos
700 1 $aSCOPEL, E.
700 1 $aSILVA, F. A. M. da
700 1 $aMarc Corbeels
773 $tInternational Journal of Agricultural Sustainability$gv. 18, n. 5, p. 410?426, 2020.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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URL |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos; Embrapa Agroindústria Tropical; Embrapa Algodão. |
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Data corrente: |
08/02/2018 |
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Data da última atualização: |
15/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
LIMA, H. L. S.; NASCIMENTO, E. S.; ANDRADE, F. K.; BRIGIDA, A. I. S.; BORGES, M. de F.; CASSALES, A. R.; MUNIZ, C. R.; SOUZA FILHO, M. de S. M. de; MORAIS, J. P. S.; ROSA, M. de F. |
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Afiliação: |
ANA IRAIDY SANTA BRIGIDA, CTAA. |
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Título: |
Bacterial cellulose production by Komagataeibacter hansenii ATCC 23769 using sisal juice: an agroindustry waste. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Brazilian Journal of Chemical Engineering, v. 34, n. 3, p. 671-680, Jul./Sep. 2017. |
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Idioma: |
Inglês |
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Conteúdo: |
In this study, we have optimized production of bacterial cellulose (BC) by Komagataeibacter hansenii ATCC 23769 in a static cultivation using sisal juice, an agroindustrial residue, as substrate. Optimization of fermentation parameters has been carried out using the one-variable-at-a-time method. Effect of initial sugar concentration, pH, nitrogen supplement, and cultivation time was evaluated. The influence of nitrogen source and quantity for bacterial cellulose production was studied using a central composite rotational design (CCRD).The highest production of BC (3.38 g/L) was obtained after 10 days of cultivation, using sisal juice (pH 5) at 15 g/L of sugars and supplemented with 7.5 g/L of extract yeast. The cellulose production yield in selected sisal culture conditions was three times higher than the yield in synthetic medium, indicating that sisal juice is a suitable substrate for BC production. |
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Palavras-Chave: |
Agroindustrial waste; Bacterial cellulose; Celulose bacteriana; Komagataeibacter hansenii; Nanotecnologia; Resíduo agroindustrial; Resíduos Agroindustriais; Sisal juice; Suco de sisal. |
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Thesagro: |
Sisal. |
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Thesaurus NAL: |
Nanotechnology. |
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Categoria do assunto: |
--
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/172777/1/Bacterial-sisal-juice-waste.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/177378/1/ART18009.pdf
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Marc: |
LEADER 02034naa a2200361 a 4500
001 2087796
005 2018-05-15
008 2017 bl uuuu u00u1 u #d
100 1 $aLIMA, H. L. S.
245 $aBacterial cellulose production by Komagataeibacter hansenii ATCC 23769 using sisal juice$ban agroindustry waste.$h[electronic resource]
260 $c2017
520 $aIn this study, we have optimized production of bacterial cellulose (BC) by Komagataeibacter hansenii ATCC 23769 in a static cultivation using sisal juice, an agroindustrial residue, as substrate. Optimization of fermentation parameters has been carried out using the one-variable-at-a-time method. Effect of initial sugar concentration, pH, nitrogen supplement, and cultivation time was evaluated. The influence of nitrogen source and quantity for bacterial cellulose production was studied using a central composite rotational design (CCRD).The highest production of BC (3.38 g/L) was obtained after 10 days of cultivation, using sisal juice (pH 5) at 15 g/L of sugars and supplemented with 7.5 g/L of extract yeast. The cellulose production yield in selected sisal culture conditions was three times higher than the yield in synthetic medium, indicating that sisal juice is a suitable substrate for BC production.
650 $aNanotechnology
650 $aSisal
653 $aAgroindustrial waste
653 $aBacterial cellulose
653 $aCelulose bacteriana
653 $aKomagataeibacter hansenii
653 $aNanotecnologia
653 $aResíduo agroindustrial
653 $aResíduos Agroindustriais
653 $aSisal juice
653 $aSuco de sisal
700 1 $aNASCIMENTO, E. S.
700 1 $aANDRADE, F. K.
700 1 $aBRIGIDA, A. I. S.
700 1 $aBORGES, M. de F.
700 1 $aCASSALES, A. R.
700 1 $aMUNIZ, C. R.
700 1 $aSOUZA FILHO, M. de S. M. de
700 1 $aMORAIS, J. P. S.
700 1 $aROSA, M. de F.
773 $tBrazilian Journal of Chemical Engineering$gv. 34, n. 3, p. 671-680, Jul./Sep. 2017.
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Registro original: |
Embrapa Agroindústria de Alimentos (CTAA) |
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