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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
26/06/2023 |
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Data da última atualização: |
26/06/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VIANA, J. H. M.; ALBUQUERQUE FILHO, M. R. de; SANTOS, F. C. dos; LADEIRA, D. de A. |
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Afiliação: |
JOAO HERBERT MOREIRA VIANA, CNPMS; MANOEL RICARDO DE ALBUQUERQUE FILHO, CNPMS; FLAVIA CRISTINA DOS SANTOS, CNPMS; DANIELA DE A. LADEIRA, Universidade Federal de São João del-Rei. |
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Título: |
Nonlinear modeling of liming reaction and extractable base curves. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Revista Brasileira de Engenharia Agrícola e Ambiental, v. 27, n. 10, p. 820-827, 2023. |
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DOI: |
http://dx.doi.org/10.1590/1807-1929/agriambi.v25n1p3-9 |
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Idioma: |
Inglês |
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Conteúdo: |
Modeling the response of soils to liming is important for understanding neutralization reactions and predicting lime residual effects. Models based on simple or quadratic polynomial equations are the most used due to their simplicity and ease of fitting; however, they fail to reproduce a realistic soil response to liming, indicating a decrease in pH as the lime dose is increased after reaching a maximum point. Thus, several nonlinear functions were tested and compared to polynomial models, using a dataset from a liming test conducted on a sandy clay loam soil in a farm. The best-fitting models for pH data were the Mitscherlich, three-parameter logistic, and MorganMercer-Flodin models. The best-fitting models for exchangeable Ca+2 + Mg+2 data were Skaggs et al., Gompertz, and Morgan- Mercer-Flodin. The use of the proposed T index, which ranks models based on their residual standard error and Akaike information criterion values, combined with constraints on extrapolation values, was useful for selecting models that are statistically robust and empirically coherent |
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Palavras-Chave: |
Correção de pH; Funções não lineares; Nonlinear functions; PH correction. |
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Thesagro: |
Calagem; Solo. |
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Thesaurus Nal: |
Liming. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1154604/1/Nonlinear-modeling-of-liming-reaction-and-extractable-base-curves.pdf
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Marc: |
LEADER 01875naa a2200253 a 4500
001 2154604
005 2023-06-26
008 2023 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/1807-1929/agriambi.v25n1p3-9$2DOI
100 1 $aVIANA, J. H. M.
245 $aNonlinear modeling of liming reaction and extractable base curves.$h[electronic resource]
260 $c2023
520 $aModeling the response of soils to liming is important for understanding neutralization reactions and predicting lime residual effects. Models based on simple or quadratic polynomial equations are the most used due to their simplicity and ease of fitting; however, they fail to reproduce a realistic soil response to liming, indicating a decrease in pH as the lime dose is increased after reaching a maximum point. Thus, several nonlinear functions were tested and compared to polynomial models, using a dataset from a liming test conducted on a sandy clay loam soil in a farm. The best-fitting models for pH data were the Mitscherlich, three-parameter logistic, and MorganMercer-Flodin models. The best-fitting models for exchangeable Ca+2 + Mg+2 data were Skaggs et al., Gompertz, and Morgan- Mercer-Flodin. The use of the proposed T index, which ranks models based on their residual standard error and Akaike information criterion values, combined with constraints on extrapolation values, was useful for selecting models that are statistically robust and empirically coherent
650 $aLiming
650 $aCalagem
650 $aSolo
653 $aCorreção de pH
653 $aFunções não lineares
653 $aNonlinear functions
653 $aPH correction
700 1 $aALBUQUERQUE FILHO, M. R. de
700 1 $aSANTOS, F. C. dos
700 1 $aLADEIRA, D. de A.
773 $tRevista Brasileira de Engenharia Agrícola e Ambiental$gv. 27, n. 10, p. 820-827, 2023.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registro Completo
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Biblioteca(s): |
Embrapa Acre; Embrapa Agrossilvipastoril. |
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Data corrente: |
17/02/2021 |
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Data da última atualização: |
25/02/2021 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
GARRETT, R.; CORTNER, O.; GIL, J. D. B.; REIS, J. C. dos; FERREIRA, J. N.; VALENTIM, J. F. |
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Afiliação: |
Rachael Garrett, ETH Zurich; Owen Cortner, ETH Zurich; Juliana D. B. Gil, Wageningen University; JULIO CESAR DOS REIS, CPAMT; JOICE NUNES FERREIRA, CPATU; JUDSON FERREIRA VALENTIM, CPAF-AC. |
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Título: |
Challenges and opportunities for the adoption of integrated farming systems: lessons from Brazil and beyond. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
In: INTERNATIONAL SYMPOSIUM ON AGRICULTURAL TECHNOLOGY ADOPTION, 1., 2019, Campo Grande, MS. Studies, methods and experiences: abstracts. Campo Grande, MS: Embrapa Gado de Corte, 2020. |
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Páginas: |
p. 31-41. |
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Série: |
(Embrapa Gado de Corte. Documentos, 279). |
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Idioma: |
Inglês |
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Notas: |
Editors: Mariana de Aragão Pereira, João Augusto Rossi Borges, Carla Heloisa Faria Domingues. |
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Conteúdo: |
Brazil's rural landscapes are critically important for global climate, economic development, and food security. The integration of crop and animal production within a single farm (ICLS) is a promising agricultural innovation to improve livelihood and environmental outcomes in these landscapes. Here we synthesize recent work examining the drivers of ICLS adoption in Brazil, as well as the economic, environmental and social tradeoffs associated with these systems, with a focus on the Legal Amazon region. Our research finds that ICLS are largely an economic and environmental win-win compared to existing extensive cattle management practices and other pasture intensification alternatives. Adopters of ICLS are well aware of the economic benefits of these systems - improved income, greater adaptability, and reduced environmental impact, while non-adopters are less aware of the benefits. High upfront costs, greater managerial intensity, existing lifestyle preferences, as well as limited access to markets, credit, and technical information remain key barriers to diffusion. Given these diverse barriers to adoption, a comprehensive mix of positive and negative financial incentives is needed to both push and pull further intensification innovations from their current niche to widespread adoption. On the push side, there is a need to vastly increase the number of demonstration farms and training seminars on successful ICLS practices. On the pull side, agricultural policies need to be re-oriented to accommodate the longer-term benefits of ICLS, including longer payback periods on loans and positive incentives for intensification via stringent restrictions on deforestation for additional land clearing and payments for environmental services. Finally, joint efforts by the private sector and government are needed to promote cattle value chain upgrading, including improved infrastructure and machinery access to enable pasture renovation and crop production in more remote regions, and better transparency about cattle origin and management practices to signal the sustainability of the sector. MenosBrazil's rural landscapes are critically important for global climate, economic development, and food security. The integration of crop and animal production within a single farm (ICLS) is a promising agricultural innovation to improve livelihood and environmental outcomes in these landscapes. Here we synthesize recent work examining the drivers of ICLS adoption in Brazil, as well as the economic, environmental and social tradeoffs associated with these systems, with a focus on the Legal Amazon region. Our research finds that ICLS are largely an economic and environmental win-win compared to existing extensive cattle management practices and other pasture intensification alternatives. Adopters of ICLS are well aware of the economic benefits of these systems - improved income, greater adaptability, and reduced environmental impact, while non-adopters are less aware of the benefits. High upfront costs, greater managerial intensity, existing lifestyle preferences, as well as limited access to markets, credit, and technical information remain key barriers to diffusion. Given these diverse barriers to adoption, a comprehensive mix of positive and negative financial incentives is needed to both push and pull further intensification innovations from their current niche to widespread adoption. On the push side, there is a need to vastly increase the number of demonstration farms and training seminars on successful ICLS practices. On the pull side, agricultural policies need to be re... Mostrar Tudo |
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Palavras-Chave: |
Integração lavoura-pecuária; Integrated crop-livestock systems; Sistemas agrícolas integrados. |
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Thesagro: |
Economia Agrícola; Impacto Econômico. |
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Thesaurus NAL: |
Agricultural economics; Integrated agricultural systems. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/221486/1/2020-cpamt-jcr-challenges-opportunities-adoption-integrated-farming-systems.pdf
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Marc: |
LEADER 03276nam a2200289 a 4500
001 2130299
005 2021-02-25
008 2020 bl uuuu u00u1 u #d
100 1 $aGARRETT, R.
245 $aChallenges and opportunities for the adoption of integrated farming systems$blessons from Brazil and beyond.$h[electronic resource]
260 $aIn: INTERNATIONAL SYMPOSIUM ON AGRICULTURAL TECHNOLOGY ADOPTION, 1., 2019, Campo Grande, MS. Studies, methods and experiences: abstracts. Campo Grande, MS: Embrapa Gado de Corte$c2020
300 $ap. 31-41.
490 $a(Embrapa Gado de Corte. Documentos, 279).
500 $aEditors: Mariana de Aragão Pereira, João Augusto Rossi Borges, Carla Heloisa Faria Domingues.
520 $aBrazil's rural landscapes are critically important for global climate, economic development, and food security. The integration of crop and animal production within a single farm (ICLS) is a promising agricultural innovation to improve livelihood and environmental outcomes in these landscapes. Here we synthesize recent work examining the drivers of ICLS adoption in Brazil, as well as the economic, environmental and social tradeoffs associated with these systems, with a focus on the Legal Amazon region. Our research finds that ICLS are largely an economic and environmental win-win compared to existing extensive cattle management practices and other pasture intensification alternatives. Adopters of ICLS are well aware of the economic benefits of these systems - improved income, greater adaptability, and reduced environmental impact, while non-adopters are less aware of the benefits. High upfront costs, greater managerial intensity, existing lifestyle preferences, as well as limited access to markets, credit, and technical information remain key barriers to diffusion. Given these diverse barriers to adoption, a comprehensive mix of positive and negative financial incentives is needed to both push and pull further intensification innovations from their current niche to widespread adoption. On the push side, there is a need to vastly increase the number of demonstration farms and training seminars on successful ICLS practices. On the pull side, agricultural policies need to be re-oriented to accommodate the longer-term benefits of ICLS, including longer payback periods on loans and positive incentives for intensification via stringent restrictions on deforestation for additional land clearing and payments for environmental services. Finally, joint efforts by the private sector and government are needed to promote cattle value chain upgrading, including improved infrastructure and machinery access to enable pasture renovation and crop production in more remote regions, and better transparency about cattle origin and management practices to signal the sustainability of the sector.
650 $aAgricultural economics
650 $aIntegrated agricultural systems
650 $aEconomia Agrícola
650 $aImpacto Econômico
653 $aIntegração lavoura-pecuária
653 $aIntegrated crop-livestock systems
653 $aSistemas agrícolas integrados
700 1 $aCORTNER, O.
700 1 $aGIL, J. D. B.
700 1 $aREIS, J. C. dos
700 1 $aFERREIRA, J. N.
700 1 $aVALENTIM, J. F.
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Embrapa Agrossilvipastoril (CPAMT) |
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