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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
10/01/2011 |
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Data da última atualização: |
14/07/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
OELOFSE, M.; HOGH-JENSEN, H.; ABREU, L. S. de; ALMEIDA, G. F.; EL-ARABY, A.; HUI, Q. Y.; NEERGAARD, A. de. |
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Afiliação: |
Miles Oelofse, University of Copenhagen; Henning Hogh-Jensen, Aarhus University - Denmark; LUCIMAR SANTIAGO DE ABREU, CNPMA; Gustavo F. Almeida, CCA- UFSCar; Ahmed El-Araby, Aim Shams University - Cairo; Qiaao Yu Hui, China Agricultural University - Beijing; Andreas de Neergaard, University of Copenhagen. |
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Título: |
A comparative study of farm nutrient budgets and nutrient flows of certified organic and non-organic farms in China, Brazil and Egypt. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Nutrient Cycling in Agroecosystems, v. 87, n. 3, p. 455-470, 2010. |
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Páginas: |
16 p. |
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DOI: |
https://doi.org/10.1007/s10705-010-9351-y |
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Idioma: |
Inglês |
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Conteúdo: |
Increased demand for certified organic products has led to an increase in the number of certified organic farms in developing countries. Knowledge of farmer nutrient management practices on certified organic farms in developing countries is limited. Thus, the aim of this study was to investigate the impact of the adoption of certified organic agriculture on farm nutrient flows and nutrient budgets, and evaluate to which degree organic farms comply with organic principles relating to nutrient management. The study is based on five case studies of different types of certified organic farming systems in Brazil, Egypt and China. Farm nutrient flows and nutrient budgets for nitrogen, phosphorous and potassium were created for each farm. Four of the five organic systems studied had nutrient surpluses on the farm budget. The surpluses were of varying magnitude. The main difference between organic and non-organic farm nutrient flows was the replacement of mineral fertilizers with organic inputs. However, the magnitude of nutrient flows were generally similar for organic and non-organic farms. Certified organic farms with positive nutrient budgets had a heavy reliance on external inputs. Continued high dependence on an external supply of nutrients, which typically originate from mineral sources, poses a significant challenge to organic farmers? fulfilment of the principles of organic agriculture. |
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Thesagro: |
Adubo Orgânico; Agricultura Orgânica; Certificação de Produto; Custo de Produção; Fertilizante; Produção Orgânica. |
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Thesaurus Nal: |
Organic certification; Organic fertilizers; Organic production; Production costs. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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Marc: |
LEADER 02457naa a2200337 a 4500
001 1872523
005 2021-07-14
008 2010 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10705-010-9351-y$2DOI
100 1 $aOELOFSE, M.
245 $aA comparative study of farm nutrient budgets and nutrient flows of certified organic and non-organic farms in China, Brazil and Egypt.
260 $c2010
300 $a16 p.
520 $aIncreased demand for certified organic products has led to an increase in the number of certified organic farms in developing countries. Knowledge of farmer nutrient management practices on certified organic farms in developing countries is limited. Thus, the aim of this study was to investigate the impact of the adoption of certified organic agriculture on farm nutrient flows and nutrient budgets, and evaluate to which degree organic farms comply with organic principles relating to nutrient management. The study is based on five case studies of different types of certified organic farming systems in Brazil, Egypt and China. Farm nutrient flows and nutrient budgets for nitrogen, phosphorous and potassium were created for each farm. Four of the five organic systems studied had nutrient surpluses on the farm budget. The surpluses were of varying magnitude. The main difference between organic and non-organic farm nutrient flows was the replacement of mineral fertilizers with organic inputs. However, the magnitude of nutrient flows were generally similar for organic and non-organic farms. Certified organic farms with positive nutrient budgets had a heavy reliance on external inputs. Continued high dependence on an external supply of nutrients, which typically originate from mineral sources, poses a significant challenge to organic farmers? fulfilment of the principles of organic agriculture.
650 $aOrganic certification
650 $aOrganic fertilizers
650 $aOrganic production
650 $aProduction costs
650 $aAdubo Orgânico
650 $aAgricultura Orgânica
650 $aCertificação de Produto
650 $aCusto de Produção
650 $aFertilizante
650 $aProdução Orgânica
700 1 $aHOGH-JENSEN, H.
700 1 $aABREU, L. S. de
700 1 $aALMEIDA, G. F.
700 1 $aEL-ARABY, A.
700 1 $aHUI, Q. Y.
700 1 $aNEERGAARD, A. de
773 $tNutrient Cycling in Agroecosystems$gv. 87, n. 3, p. 455-470, 2010.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Biblioteca |
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Tipo/Formato |
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Cutter |
Registro |
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URL |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Rondônia. Para informações adicionais entre em contato com cpafro.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
22/01/1997 |
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Data da última atualização: |
22/05/1997 |
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Autoria: |
OLIVEIRA, J. N. S.; NUNES, A. M. L.; OLIVEIRA, M. A. S. |
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Título: |
Ensaio preliminar de caupi Vigna unguiculata (L.) Walp em Rondonia - 1988. |
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Ano de publicação: |
1988 |
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Fonte/Imprenta: |
Porto Velho: EMBRAPA-UEPAE Porto Velho, 1988. |
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Páginas: |
4p. |
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Série: |
(EMBRAPA-UEPAE Porto Velho. Pesquisa em Andamento, 110). |
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ISSN: |
0101-7039 |
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Idioma: |
Português |
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Palavras-Chave: |
Bean; Brasil; Caupi; Cowpea; Ensaio; Melhoramento genetico; Rondônia; Trial. |
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Thesagro: |
Feijão de corda; Vigna Unguiculata. |
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Thesaurus NAL: |
Brazil; cowpeas; genetic improvement. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00843nam a2200313 a 4500
001 1698621
005 1997-05-22
008 1988 bl uuuu u0uu1 u #d
022 $a0101-7039
100 1 $aOLIVEIRA, J. N. S.
245 $aEnsaio preliminar de caupi Vigna unguiculata (L.) Walp em Rondonia - 1988.
260 $aPorto Velho: EMBRAPA-UEPAE Porto Velho$c1988
300 $a4p.
490 $a(EMBRAPA-UEPAE Porto Velho. Pesquisa em Andamento, 110).
650 $aBrazil
650 $acowpeas
650 $agenetic improvement
650 $aFeijão de corda
650 $aVigna Unguiculata
653 $aBean
653 $aBrasil
653 $aCaupi
653 $aCowpea
653 $aEnsaio
653 $aMelhoramento genetico
653 $aRondônia
653 $aTrial
700 1 $aNUNES, A. M. L.
700 1 $aOLIVEIRA, M. A. S.
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