Teor e dinâmica do carbono no solo em sistemas de integração lavoura-pecuária

Salton, J. C.; Mielniczuk, João; Bayer, Cimélio; Fabricio, A. C.; Macedo, Manuel Cláudio da Motta; Broch, Dirceu Luiz

doi:10.1590/s0100-204x2011001000031

Cited by 65 publications

(54 citation statements)

References 19 publications

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“…In many studies, POC contents are more sensitive to changes in soil use than TOC, and agricultural areas are generally more degraded than those under native vegetation (Figueiredo et al, 2010;Salton et al, 2011). Pastures form large amounts of POC, mostly because of the extensive root system and aerial biomass of foraging plants (Franzluebbers and Stuedemann, 2002;Salton et al, 2011;Loss et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

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Soil Organic Matter Fractions in Preserved and Disturbed Wetlands of the Cerrado Biome

Sousa

Brasil

Figueiredo

et al. 2015

Rev. Bras. Ciênc. Solo

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Veredas are humid tropical ecosystems, generally associated to hydromorphic soils and a shallow water table. The soils of these ecosystems are affected by the use of the areas around these veredas. The objective of this study was to determine soil organic matter (SOM) fractions in veredas adjacent to preserved (native savanna) and disturbed environments (agricultural areas and pastures) in the Cerrado biome. Soil samples were collected from the 0-10 and 10-20 cm layers along reference lines drawn along the relief following the upper, middle and lower positions of one of the slopes, in the direction of the draining line of the vereda. The soil analysis determined: total soil OC, total nitrogen and C:N ratio; C and N contents and C:N ratio in particulate and mineral-associated fractions (of SOM); fulvic acids, humic acids and humin fractions and ratio between humic and fulvic acids. The agricultural use around the veredas induced changes in the SOM fractions, more pronounced in the lower part of the slope. In the soil surface of this part, the OC levels in the humic substances and the particulate fraction of SOM, as well as total soil OC were reduced in the vereda next to crop fields. Keywords

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Section: Resultsmentioning

confidence: 99%

“…Pastures form large amounts of POC, mostly because of the extensive root system and aerial biomass of foraging plants (Franzluebbers and Stuedemann, 2002;Salton et al, 2011;Loss et al, 2012). In a study of Salton et al (2011), pasture systems contained higher levels of POC than soils under natural vegetation or agricultural systems.…”

Section: Resultsmentioning

confidence: 99%

Soil Organic Matter Fractions in Preserved and Disturbed Wetlands of the Cerrado Biome

Sousa

Brasil

Figueiredo

et al. 2015

Rev. Bras. Ciênc. Solo

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“…The adoption of ICL and ICLF systems has provided benefits for the maintenance of soil quality and C sequestration (Carvalho et al, 2010;Salton et al, 2011); however, more studies are still needed on the behavior of light soils cultivated with pastures.…”

Section: Cultivated Pasturesmentioning

confidence: 99%

Characterization, agricultural potential, and perspectives for the management of light soils in Brazil

Donagemma

Freitas

Balieiro

et al. 2016

Pesq. agropec. bras.

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-Light soils occupy 8% of the Brazilian territory and are especially expressive in the new and last agricultural frontier in Brazil: the Matopiba region -in the states of Maranhão, Tocantins, Piauí, and Bahia -, where they represent 20% of the area. These soils fit into the textural classes of sand and loamy sand or sandy loam, down to 0.75-m soil depth or deeper, and they are mainly represented by Neossolos Quartzarênicos (Quartzipsamments) and, partly, by Latossolos (Oxisols) and Argissolos (Ultisols). The understanding of soil functioning depends on the establishment of distinguishing criteria for: organic matter dynamics; content and mineralogy of the clay fraction; coarse sand and total sand contents, in relation to those of fine sand; mean diameter of the sand fraction; and water retention capacity. These criteria can contribute for the zoning and for the conservation and fertility management of light soils, as well as for the estimation of their agricultural potential. Integrated production systems, such as crop-livestock and crop-livestock-forestry integration, besides no-tillage with crop rotation, mixed forestry planting with legumes, and the use of green manure and cover crops are relevant for the proper management of these soils. The objective of this review was to characterize light soils and to highlight the main challenges regarding their agricultural potential and their conservation and fertility managements, in face of the expansion and consolidation of the new Brazilian agricultural frontier.

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“…Por conta desta importância, diferentes frações da matéria orgânica do solo, como o carbono orgânico particulado (COP) e o carbono associado aos minerais (CAM), vêm sendo utilizados como indicadores de qualidade do solo, por serem mais sensíveis às alterações de manejo do solo do que o carbono orgânico total (COT), conforme observado em Faccin et al (2017), Kunde et al (2016), Leal et al (2016), Salton et al (2012) e Loss et al (2011).…”

Section: Introductionunclassified

Frações Da Materia Orgânica, Indice De Manejo Do Carbono E Atributos Físicos De Um Latossolo Vermelho Sob Diferentes Sistemas De Uso

Balin

Ziech

Oliveira

et al. 2017

RSA

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Resumo -O presente estudo teve como objetivo analisar as frações da matéria orgânica, o índice de manejo do carbono e os atributos físicos de um Latossolo Vermelho sob diferentes sistemas de uso. Quatro áreas distintas de uso do solo foram avaliadas: Lavoura de culturas anuais sob sistema plantio direto há mais de 5 anos (LAV-PD); Pastagem com grama estrela (PAST); Plantio florestal de eucaliptos com 10 anos de idade (EUC); Floresta Ombrófila Mista em estagio médio de regeneração (MATA). Amostras de solo foram coletadas nas camadas de 0,00-0,05, 0,05-0,10, 0,10-0,20 e 0,20-0,40 m para a determinação do teor de carbono orgânico total (COT), do carbono orgânico particulado (COP), do carbono orgânico associado aos minerais (CAM), do diâmetro médio geométrico de agregados (DMG), da densidade do solo (Ds), da macroporosidade (Ma), da microporosidade (Mi) e da porosidade total (Pt). O estudo mostrou a importância de se realizar avaliações quali-quantitativas do teor de carbono do solo (COT, COP e CAM), no intuito de se avaliar de uma forma mais precisa a contribuição dos sistemas de uso sobre a dinâmica do carbono no ambiente e nos atributos físicos do solo. O tratamento MATA mostrou-se ser o sistema mais equilibrado, considerando todas as camadas de solo avaliadas, pois apresentou a maior estabilidade dos agregados, menor Ds e maior percentual de Pt e Ma em relação aos demais tratamentos.Palavras chave -carbono orgânico total, carbono orgânico associado aos minerais, carbono orgânico particulado, agregação, densidade do solo, macroporosidade. Abstract -The present study aimed to analyze fractions of organic matter, carbon management index and the physical attributes of a Red Latossol under different use systems. Four distinct areas of land use had been selected: No-tillage annual crops 5 years old; Area with pasture ; forest area with eucalyptus plantation 10 years old; MixedRain Forest in average stage of regeneration. Soil samples were collected in layers of 0.00-0.05, 0.05-0.10, 0.10-0.20 and 0.20-0.40 m for determination of total organic carbon, particulate organic carbon, organic carbon associated with minerals, the geometric mean diameter of aggregates, bulk density, the macroporosity, the microporosity and total porosity and . The study showed the importance of conducting evaluations quali-quantitative soil carbon content, in order to assess more precisely the contribution of systems for use on the carbon dynamics in the environment and in the physical attributes of the soil. The treatmentForest proved to be the most balanced, considering all the layers of soil are evaluated, as presented greater stability of aggregates, lower bulk density and higher percentage of total porosity and macroporosity compared to other treatments.

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Teor e dinâmica do carbono no solo em sistemas de integração lavoura-pecuária

Cited by 65 publications

References 19 publications

Soil Organic Matter Fractions in Preserved and Disturbed Wetlands of the Cerrado Biome

Soil Organic Matter Fractions in Preserved and Disturbed Wetlands of the Cerrado Biome

Characterization, agricultural potential, and perspectives for the management of light soils in Brazil

Frações Da Materia Orgânica, Indice De Manejo Do Carbono E Atributos Físicos De Um Latossolo Vermelho Sob Diferentes Sistemas De Uso

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