Integrated farming systems for improving soil carbon balance in the southern Amazon of Brazil

Oliveira, Janaína de; Madari, B. E.; Carvalho, M. T. de M.; Assis, Paula Camylla Ramos; Silveira, André Luiz Rodrigues da; Lima, Mateus de Leles; Wruck, F. J.; Medeiros, João Carlos; Machado, P. L. O. de A.

doi:10.1007/s10113-017-1146-0

Cited by 36 publications

(16 citation statements)

References 56 publications

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“…Our finding showed a substantial increment in SOC stocks in PAST and SPS areas compared to NV areas, which is in agreement with the data reported in a comprehensive meta‐analysis conducted with the data of the Amazonian region by Fujisaki et al (2015). Greater SOC stocks in pasture systems can be associated with incorporation of C in the soil by the abundant and vigorous root system of grasses (particularly of the Brachiaria genus) and litter deposition (Eclesia, Jobbagy, Jackson, Biganzoli, & Piñeiro, 2012; Oliveira et al, 2017; Sarto, Borges, Sarto, Rice, & Rosolem, 2020b).…”

Section: Discussionmentioning

confidence: 99%

Restoring soil carbon and chemical properties through silvopastoral adoption in the Colombian Amazon region

et al. 2020

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Silvopastoral systems (SPS) have been widely implemented in the Colombian Amazon region to improve pastures involving a greater diversity of species, soil tillage, fertilization, and higher stocking rate, which can induce changes in soil properties and functions. This study aimed to evaluate soil chemical properties and carbon sequestration changes due to the transition from traditional pastures to silvopastoral systems. The study was conducted in the Colombian Amazon region, specifically in La Montañita and El Doncello Counties, in Caquetá, the second most important hotspot of deforestation in the entire Amazon basin. In each study site, we established a chronosequence consisting of three areas following the typical land‐use change at the region: (i) native vegetation, (ii) traditional pasture, and (iii) silvopastoral system. We found that agricultural practices involving liming and tillage, performed under the silvopastoral management, contributed to reducing soil active acidity and exchangeable acidity with soil pH increasing from 3.8 to 4.3 and H++Al3+ decreasing from 5.8 to 2.3 cmolc kg−1. These alterations favored increases in Ca2+ and Mg2+ contents mainly, increasing the base saturation from 17% in traditional pastures to 55% under silvopastoral systems. The synergic effect of the mix of grasses and trees under silvopastoral management improved soil micronutrient contents and modified soil C stocks in 20–30 cm layer. A rate of soil C accretion of 0.26 Mg ha−1 yr−1 for the 0–30 cm detected in silvopastoral systems suggests that its implementation could be a promising tool for C sequestration in tropical regions, capable of restoring soil functioning of degraded areas.

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Section: Discussionmentioning

confidence: 99%

Restoring soil carbon and chemical properties through silvopastoral adoption in the Colombian Amazon region

et al. 2020

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“…Carbioma focused on developing sustainable management options for agriculture in the Cerrado and the Cerrado-Amazon transition zone. It contributed to the evaluation of integrated agricultural production systems in the context of carbon sequestration and sustainable land use (Oliveira et al 2018).…”

Section: Inter-and Transdisciplinary Research Approachmentioning

confidence: 99%

“…The statistical regional climate modelling (STAR) showed a clear decreasing trend of precipitation for the whole study area (15-25%; 1981-2010 to 2011-2040), while dynamic WRF downscaling gave a much more heterogeneous spatial distribution with slightly increasing and decreasing areas. Agro-economic simulation using MPMAS (Carauta et al 2018) on detailed data on farm asset endowments and production requirements, crop management practices, historical prices for agricultural products and inputs, available sources of credit, relevant taxes and use of ABC program, as well as storage and transportation costs, produced the probably most complete dataset available for farm-level simulation in Mato Grosso, Brazil, including a detailed analysis of integrated crop-livestock systems (iCL) as part of the Brazilian ABC Program on their potential to improve land management and soil carbon storage (Oliveira et al 2018;Carauta et al 2018;Gil et al 2015).…”

Section: Inter-and Transdisciplinary Research Approachmentioning

confidence: 99%

Carbon-optimised land management strategies for southern Amazonia

et al. 2017

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“…Estima-se que 70% das áreas de pastagem de Rondônia estão com algum grau de degradação e a soja vem como uma alternativa para a recuperação destes solos, no sistema de integração lavoura-pecuária (iLP). Estudos demonstram que os sistemas de iLP possibilitam a recuperação de áreas degradadas por meio da intensificação do uso da terra, com aumento da eficiência produtiva e sustentabilidade ambiental e econômica (CARAUTA et al, 2018;CARVALHO et al, 2018;COSER et al, 2018;COSTA et al, 2018;OLIVEIRA et al, 2018).…”

Section: Introductionunclassified

Avaliação Econômico-Financeira Da Soja Em Sistema Integrado Em Sucessão Ao Milho Na Região Sudoeste Da Amazônia

Quintino¹,

Passos²,

Ribeiro³

2018

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RESUMO O objetivo dessa pesquisa foi realizar a avaliação econômico-financeira da soja, safra 2017/2018, na região norte do estado de Rondônia, Sudoeste da Amazônia. Foi conduzido um experimento na Unidade de Referência Tecnológica implantada no campo experimental da Embrapa em Porto Velho, Rondônia. O modelo conceitual da área caracteriza-se pela implantação da cultura da soja em plantio direto na safra, milho consorciado com Brachiaria brizantha cultivar Xaraés na segunda safra e criação de gado leiteiro após a soja e milho. Os procedimentos metodológicos consistiram no levantamento dos custos de produção da soja implantada no sistema de integração lavoura-pecuária (iLP). Para a análise econômico utilizou-se o Demonstrativo do Resultado do Exercício, calculando os indicadores de eficiência econômica: margem bruta, margem de contribuição, renda líquida total, renda da família, lucro operacional líquido e lucratividade. Utilizou-se o Demonstrativo de Fluxo de Caixa para análise financeira dos indicadores: Valor Presente Líquido (VPL), Taxa Interna de Retorno (TIR) e Relação Benefício/Custo (B/C), descontado a uma Taxa Mínima de Atratividade de 6,14% a.a. Realizou-se a Análise de Sensibilidade para verificar os cenários em função das variáveis: preços de comercialização, produtividade e custo de produção tomando como premissa o cenário base utilizado na pesquisa. Os resultados demonstraram um custo de

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Integrated farming systems for improving soil carbon balance in the southern Amazon of Brazil

Cited by 36 publications

References 56 publications

Restoring soil carbon and chemical properties through silvopastoral adoption in the Colombian Amazon region

Restoring soil carbon and chemical properties through silvopastoral adoption in the Colombian Amazon region

Carbon-optimised land management strategies for southern Amazonia

Avaliação Econômico-Financeira Da Soja Em Sistema Integrado Em Sucessão Ao Milho Na Região Sudoeste Da Amazônia

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