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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
01/11/2022 |
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Data da última atualização: |
01/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ABRELL, T.; NAUDIN, K.; BIANCHI, F. J. J. A.; ARAGAO, D. V.; TITTONELL, P.; CORBEELS, M. |
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Afiliação: |
THOMAS ABRELL, CENTRE DE COOPÉRATION INTERNATIONALE EN RECHERCHE AGRONOMIQUE POUR LE DÉVELOPPEMENT; KRISHNA NAUDIN, CENTRE DE COOPÉRATION INTERNATIONALE EN RECHERCHE AGRONOMIQUE POUR LE DÉVELOPPEMENT; FELIX J. J. A. BIANCHI, WAGENINGEN UNIVERSITY AND RESEARCH; DEBORA VEIGA DE ARAGAO, CPATU; PABLO TITTONELL, CENTRE DE COOPÉRATION INTERNATIONALE EN RECHERCHE AGRONOMIQUE POUR LE DÉVELOPPEMENT; MARC CORBEELS, CENTRE DE COOPÉRATION INTERNATIONALE EN RECHERCHE AGRONOMIQUE POUR LE DÉVELOPPEMENT. |
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Título: |
Cassava root yield variability in shifting cultivation systems in the eastern Amazon region of Brazil. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Experimental Agriculture, v. 58, e38, p. 1-19, 2022. |
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DOI: |
https://doi.org/10.1017/S0014479722000333 |
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Idioma: |
Inglês |
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Conteúdo: |
Cassava flour is the main source of carbohydrates for family farmers in the Amazon region of Brazil. Cassava is mainly grown under shifting cultivation, in recurrent cultivation periods initiated through slash-and-burn. Its sustainability is, however, questioned due to the associated deforestation and often rapidly decreasing crop productivity. There is an urgent need to make these cassava systems more sustainable and more profitable, but we currently lack a deep understanding of the key factors governing their productivity. We conducted an on-farm study on 37 cassava fields of smallholder farmers at three locations that spanned a range of crop-fallow frequencies, some of which were initiated through slash-and-burn while others through fire-free land clearance. First, we analysed how cassava plant density at harvest was related with pedoclimatic and management factors in slash-and-burn systems. Second, we assessed the relationship between plant density and cassava root yield at harvest and conducted a yield gap analysis to better understand which factors govern cassava productivity beyond plant density in slash-and-burn systems. Finally, we compared cassava productivity between slash-and-burn and the fire-free land clearing techniques that some farmers started to adopt in the study region. Cassava yields averaged 7.2 ± 5.4 Mg ha?1 (50% of the average yield of 14.2 Mg ha?1 in the Pará State), and ranged from 0 (in case of root rot diseases) to 24 Mg ha?1 . Cassava yield was associated with plant density at harvest (ranging from 0 to 10 000 plants ha? 1 ), suggesting that managing plant density is a key determinant of the attainable yield levels. In addition, differences in cassava root yields could be largely explained by differences in labour inputs for weeding and fallow clearing, the effect of the latter depending on soil texture. Therefore, our results suggest that labour is a key production factor for cassava in the shifting cultivation systems of the Eastern Amazon in which the use of external inputs, such as chemical fertilizers and herbicides, is limited. Further, root yields were influenced by the method of field preparation, whereby yields were about 50% lower (and more variable) when fields were prepared by slash-and-burn than by mechanical ploughing or herbicide application. Despite the significantly higher yields, these alternatives to burning the vegetation are, however, still hardly adopted in Paragominas. Hence, there is a need for supporting more sustainable production systems through local and national public policies. These new systems should not only focus on soil fertility management but also on weed control and, more generally, on labour productivity. MenosCassava flour is the main source of carbohydrates for family farmers in the Amazon region of Brazil. Cassava is mainly grown under shifting cultivation, in recurrent cultivation periods initiated through slash-and-burn. Its sustainability is, however, questioned due to the associated deforestation and often rapidly decreasing crop productivity. There is an urgent need to make these cassava systems more sustainable and more profitable, but we currently lack a deep understanding of the key factors governing their productivity. We conducted an on-farm study on 37 cassava fields of smallholder farmers at three locations that spanned a range of crop-fallow frequencies, some of which were initiated through slash-and-burn while others through fire-free land clearance. First, we analysed how cassava plant density at harvest was related with pedoclimatic and management factors in slash-and-burn systems. Second, we assessed the relationship between plant density and cassava root yield at harvest and conducted a yield gap analysis to better understand which factors govern cassava productivity beyond plant density in slash-and-burn systems. Finally, we compared cassava productivity between slash-and-burn and the fire-free land clearing techniques that some farmers started to adopt in the study region. Cassava yields averaged 7.2 ± 5.4 Mg ha?1 (50% of the average yield of 14.2 Mg ha?1 in the Pará State), and ranged from 0 (in case of root rot diseases) to 24 Mg ha?1 . Cassava yield was a... Mostrar Tudo |
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Palavras-Chave: |
Weed pressure. |
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Thesagro: |
Erva Daninha; Fertilidade do Solo; Mandioca; Manihot Esculenta. |
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Thesaurus Nal: |
Cassava; Shifting cultivation; Soil fertility. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03582naa a2200289 a 4500
001 2147936
005 2022-11-01
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1017/S0014479722000333$2DOI
100 1 $aABRELL, T.
245 $aCassava root yield variability in shifting cultivation systems in the eastern Amazon region of Brazil.$h[electronic resource]
260 $c2022
520 $aCassava flour is the main source of carbohydrates for family farmers in the Amazon region of Brazil. Cassava is mainly grown under shifting cultivation, in recurrent cultivation periods initiated through slash-and-burn. Its sustainability is, however, questioned due to the associated deforestation and often rapidly decreasing crop productivity. There is an urgent need to make these cassava systems more sustainable and more profitable, but we currently lack a deep understanding of the key factors governing their productivity. We conducted an on-farm study on 37 cassava fields of smallholder farmers at three locations that spanned a range of crop-fallow frequencies, some of which were initiated through slash-and-burn while others through fire-free land clearance. First, we analysed how cassava plant density at harvest was related with pedoclimatic and management factors in slash-and-burn systems. Second, we assessed the relationship between plant density and cassava root yield at harvest and conducted a yield gap analysis to better understand which factors govern cassava productivity beyond plant density in slash-and-burn systems. Finally, we compared cassava productivity between slash-and-burn and the fire-free land clearing techniques that some farmers started to adopt in the study region. Cassava yields averaged 7.2 ± 5.4 Mg ha?1 (50% of the average yield of 14.2 Mg ha?1 in the Pará State), and ranged from 0 (in case of root rot diseases) to 24 Mg ha?1 . Cassava yield was associated with plant density at harvest (ranging from 0 to 10 000 plants ha? 1 ), suggesting that managing plant density is a key determinant of the attainable yield levels. In addition, differences in cassava root yields could be largely explained by differences in labour inputs for weeding and fallow clearing, the effect of the latter depending on soil texture. Therefore, our results suggest that labour is a key production factor for cassava in the shifting cultivation systems of the Eastern Amazon in which the use of external inputs, such as chemical fertilizers and herbicides, is limited. Further, root yields were influenced by the method of field preparation, whereby yields were about 50% lower (and more variable) when fields were prepared by slash-and-burn than by mechanical ploughing or herbicide application. Despite the significantly higher yields, these alternatives to burning the vegetation are, however, still hardly adopted in Paragominas. Hence, there is a need for supporting more sustainable production systems through local and national public policies. These new systems should not only focus on soil fertility management but also on weed control and, more generally, on labour productivity.
650 $aCassava
650 $aShifting cultivation
650 $aSoil fertility
650 $aErva Daninha
650 $aFertilidade do Solo
650 $aMandioca
650 $aManihot Esculenta
653 $aWeed pressure
700 1 $aNAUDIN, K.
700 1 $aBIANCHI, F. J. J. A.
700 1 $aARAGAO, D. V.
700 1 $aTITTONELL, P.
700 1 $aCORBEELS, M.
773 $tExperimental Agriculture$gv. 58, e38, p. 1-19, 2022.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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| Registros recuperados : 80 | |
| 1. |  | SILVA, D.; OLIVEIRA, G.; SILVA, ROOSEVELT.; FERNANDES, C.; JESUS, L. de; BERGIER, I. Controle automático da umidade do solo com energia solar para pequenos produtores. In: SIMPÓSIO SOBRE RECURSOS NATURAIS E SOCIOECONÔMICOS DO PANTANAL, 6.; EVENTO DE INICIAÇÃO CIENTÍFICA DO PANTANAL, 1., 2013, Corumbá, MS. Desafios e soluções para o Pantanal: resumos. Corumbá: Embrapa Pantanal, 2013.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pantanal. |
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| 2. | | OLIVEIRA, G.; SILVA, D.; FERNANDES, C.; SILVA, R.; JESUS, L. de; BERGIER, I. Desenvolvimento de um sistema de monitoramento remoto de umidade do solo. In: SIMPÓSIO SOBRE RECURSOS NATURAIS E SOCIOECONÔMICOS DO PANTANAL, 6.; EVENTO DE INICIAÇÃO CIENTÍFICA DO PANTANAL, 1., 2013, Corumbá, MS. Desafios e soluções para o Pantanal: resumos. Corumbá: Embrapa Pantanal, 2013. 3p.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pantanal. |
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| 3. | | OLIVEIRA, G.; SILVA, D.; SILVA, R.; JESUS, L. de; FERNANDES, C.; BERGIER, I. Mini-estação meteorológica integrada ao sistema de compartilhamento de dados "Base Tuiuiú". In: EVENTO DE INICIAÇÃO CIENTÍFICA DO PANTANAL, 2.; 2014, Corumbá. Resumos...Corumbá: Embrapa Pantanal, 2014. (Embrapa Pantanal. Documentos, 126). p. 23| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pantanal. |
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| 9. | | LIMA, N. D.; VERZIGNASSI, J. R.; FERNANDES, C. D.; MACEDO, M. C. M.; JESUS, L. de; CORADO, H. S. Produtividade e qualidade da produção de sementes de Brachiaria spp. em função de épocas de uniformização e adubação. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 10., 2014, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2014. p. 78-79. 2 p. (Embrapa Gado de Corte. Documentos, 208). Comissão organizadora: Grácia Maria Soares Rosinha, Alexandra Rocha de Oliveir, Rodrigo Carvalho Alva.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 10. | | MONTEIRO, L. C.; VERZIGNASSI, J. R.; BARRIOS, S. C. L.; FERNANDES, C. D.; JESUS, L. de; CORADO, H. S. Seleção de híbridos intraespecíficos de Brachiaria decumbens para produção de sementes. Informativo ABRATES, Curitiba, v. 25, n. 2, set. 2015. 1 p. Resumo apresentado no XIX Congresso Brasileiro de Sementes, Foz do Iguaçu, 2015.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 11. | | CRISTALDO, M. F.; SOUZA, C. C. de; JESUS, L. de; PADOVANI, C. R.; OLIVEIRA, P. T. S. de; VIGANÓ, H. H. da G. Analysis and distribution of the rainfall monitoring network in a Brazilian Pantanal Region. Revista Brasileira de Meteorologia, v. 32, n. 2, 199-205, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Pantanal. |
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| 12. | | SILVA, M. R.; VERZIGNASSI, J. R.; COELHO, M. de B.; SILVA, J. I.; MONTEIRO, L. C.; RAMOS, A. R.; FERNANDES, C. D.; JESUS, L. de; CORADO, H. S. Nanotecnologia aplicada a produtos agroflorestais. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 8., 2012, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2012. 2 p. (Embrapa Gado de Corte. Documentos, 198).| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 13. | | CARDOSO, L. C. M. C.; VERZIGNASSI, J. R.; FERNANDES, C. D.; COELHO, M. de B.; MONTEIRO, L. C.; JESUS, L. de; CORADO, H. S. Polímeros no recobrimento de sementes de forrageiras tropicais para fixação de agrotóxicos e longevidade de sementes. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 10., 2014, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2014. p. 58-59. 2 p. (Embrapa Gado de Corte. Documentos, 208). Comissão organizadora: Grácia Maria Soares Rosinha, Alexandra Rocha de Oliveir, Rodrigo Carvalho Alva.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 14. | | CRISTALDO, M. F.; SOUZA, C. C. de; JESUS, L de; OLIVEIRA, P. T. S. de; PADOVANI, C. R.; VIGANÓ, H. H. DA G. Previsão probabilística de enchentes para uma pequena bacia hidrográfica do Pantanal. Revista Ambiente & Água, v.13, n. 4, e1988, ago. 2018.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Pantanal. |
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| 15. | | VERZIGNASSI, J. R.; REZENDE, R.; VALLE, C. B. do; MIRANDA, J. C. P.; JESUS, L. de; COLHETA, B. K. D.; FERNANDES, C. D.; LAURA, V. A. Potencial de produção de sementes por genótipos híbridos de Brachiária humidicola. Informativo Abrates, Londrina, v. 19, n. 2, p. 585, set. 2009. Edição dos resumos do XVI Congresso Brasileiro de Sementes. 2009. Curitiba.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 16. | | VERZIGNASSI, J. R.; PEREIRA, F. A. R.; PAIVA, A. S.; FERNANDES, C. D.; JESUS, L. de; MIRANDA, J. C. P. de; CORADO, H. S.; ROOS, J. L. B. Herbicidas em pós-emergência em campo de produção de sementes de braquiária BRS Piatã. In: CONGRESSO BRASILEIRO DA CIÊNCIA DAS PLANTAS DANINHAS, 28., 2012, Campo Grande, MS. Ciências das plantas daninhas na era da biotecnologia: anais. Campo Grande, MS: SBCPD, 2012. p.109-113| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 17. | | VERZIGNASSI, J. R.; PEREIRA, F. A. R.; PAIVA, A. S.; FERNANDES, C. D.; JESUS, L. de; MIRANDA, J. C. P. de; CORADO, H. S.; ROOS, J. L. B. Herbicidas em pós-emergência em campos de produção de sementes de Stylosanthes guianensis genótipos gc1463+gc1480. In: CONGRESSO BRASILEIRO DA CIÊNCIA DAS PLANTAS DANINHAS, 28., 2012, Campo Grande, MS. Ciências das plantas daninhas na era da biotecnologia: anais. Campo Grande, MS: SBCPD, 2012. p.104-108| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 18. | | VERZIGNASSI, J. R.; PEREIRA, F. A. R.; PAIVA, A. S.; FERNANDES, C. D.; JESUS, L. de; MIRANDA, J. C. P. de; CORADO, H. S.; ROOS, J. L. B. Herbicidas em pré-emergência em Stylosanthes guianensis genótipos gc1463+gc1480. In: CONGRESSO BRASILEIRO DA CIÊNCIA DAS PLANTAS DANINHAS, 28., 2012, Campo Grande, MS. Ciências das plantas daninhas na era da biotecnologia: anais. Campo Grande, MS: SBCPD, 2012. p.99-103| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 19. | | LIBÓRIO, C. B.; VERZIGNASSI, J. R.; PEREIRA, F. A. R.; FERNANDES, C. D.; MONTEIRO, L. C.; BENTEO, G. L.; LIMA, N. D.; CARDOSO, L. C. M. C.; JESUS, L. de; CORADO, H. S. Dessecação de genótipos de Brachiaria por glifosato. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 10., 2014, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2014. p. 28-29. 2 p. (Embrapa Gado de Corte. Documentos, 208). Comissão organizadora: Grácia Maria Soares Rosinha, Alexandra Rocha de Oliveir, Rodrigo Carvalho Alva.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 20. | | LIBÓRIO, C. B.; VERZIGNASSI, J. R.; LIMA, N. D.; FERNANDES, C. D.; MATTA, F. de P.; CORADO, H. S.; JESUS, L. de; SILVA, M. A. da; MOTA, W. C.; RIBEIRO, G. S. Densidade de semeadura no estabelecimento de campos de produção de sementes de Paspalum regnellii CV. BRS Guará em solo de textura argilosa. In: CONGRESSO BRASILEIRO DE SEMENTES, 20., 2017, Foz do Iguaçu. Informativo Abrates, v. 27, n. 2, p. 301, 2017.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| Registros recuperados : 80 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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