Densidade, agregação e frações de carbono de um Argissolo sob pastagem natural submetida a níveis de ofertas de forragem por longo tempo

Conte, Osmar; Wesp, Cristiane de Lima; Anghinoni, Ibanor; Carvalho, Paulo César de Faccio; Levien, Renato; Nabinger, Carlos

doi:10.1590/s0100-06832011000200027

Cited by 29 publications

(30 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These trends are similar to those reported by Conte et al (2011a), who also did not observe any difference in soil physical properties because of pasture height in the crop-livestock systems in an Oxisol in Brazil. It is probable that the palisade height (30 and 45 cm) is sufficient to minimize the adverse effects of trampling by the cattle.…”

Section: Multivariate Analysessupporting

confidence: 90%

“…Moreira et al (2012) observed improvements in the physical quality of an Oxisol after 8 years of an integrated crop-livestock system and attributed it to the physical quality of resilience. In general, management practices induced changes in soil physical properties, which occur in surface soil (Conte et al, 2011a;Santos et al, 2011). The reversibility and intensity of soil physical degradation by animal trampling depend on grazing intensity (number of animals) and the height of the grass (Conte et al, 2011a).…”

Section: Introductionmentioning

confidence: 99%

“…In general, management practices induced changes in soil physical properties, which occur in surface soil (Conte et al, 2011a;Santos et al, 2011). The reversibility and intensity of soil physical degradation by animal trampling depend on grazing intensity (number of animals) and the height of the grass (Conte et al, 2011a). The intensity of soil compaction is related to pasture availability and manifestation of stress by the pasture biomass.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Physical quality of an Oxisol under an integrated crop-livestock-forest system in the Brazilian Cerrado

Neto

Andrioli

Almeida

et al. 2014

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

SUMMARYSoil physical quality is an important factor for the sustainability of agricultural systems. Thus, the aim of this study was to evaluate soil physical properties and soil organic carbon in a Typic Acrudox under an integrated crop-livestock-forest system. The experiment was carried out in Mato Grosso do Sul, Brazil. Treatments consisted of seven systems: integrated crop-livestock-forest, with 357 trees ha -1 and pasture height of 30 cm ); integrated crop-livestock-forest with 357 trees ha -1 and pasture height of 45 cm ); integrated crop-livestockforest with 227 trees ha -1 and pasture height of 30 cm ); integrated croplivestock-forest with 227 trees ha -1 and pasture height of 45 cm ); integrated crop-livestock with pasture height of 30 cm (CL 30 ); integrated croplivestock with pasture height of 45 cm (CL 45 ) and native vegetation (NV). Soil properties were evaluated for the depths of 0-10 and 10-20 cm. All grazing treatments increased bulk density (ρ ρ ρ ρ ρ b ) and penetration resistance (PR), and decreased total porosity (ƒ t ) and macroporosity (ƒ ma ), compared to NV. The values of ρ ρ ρ ρ ρ b (1.18-1.47 Mg m -3 ), ƒ ma (0.14-0.17 m 3 m -3 ) and PR (0.62-0.81 MPa) at the 0-10 cm depth were not restrictive to plant growth. The change in land use from NV to CL or CLF decreased soil organic carbon (SOC) and the soil organic carbon pool (SOC pool ). All grazing treatments had a similar SOC pool at the 0-10 cm depth and were lower than that for NV (17.58 Mg ha -1 ).Index terms: agroforestry, soil organic carbon, multivariate analysis. A qualidade física do solo é um importante fator para a sustentabilidade dos sistemas agrícolas. O objetivo desta pesquisa foi avaliar as propriedades físicas do solo e o carbono orgânico em um Latossolo Vermelho distrófico, sob sistema de integração lavoura-pecuária-floresta. O experimento foi conduzido no Mato Grosso do Sul, Brasil. Os tratamentos consistiram de sete sistemas: integração lavoura-pecuária-floresta, com 357 árvores ha -1 e altura de pastejo de 30 cm ); integração lavoura-pecuária-floresta, com 357 árvores ha -1 e altura do pastejo de 45 cm (CLF 357-45 ); integração lavoura-pecuária-floresta, com 227 árvores ha -1 e altura do pastejo de 30 cm ); integração lavoura-pecuária-floresta, com 227 árvores ha -1 e altura do pastejo de 45 cm ); integração lavourapecuária, com a altura do pastejo de 30 cm (CL 30 ); integração lavoura-pecuária, com a altura do pastejo de 45 cm (CL 45 ); e vegetação nativa (NV). As propriedades do solo foram avaliadas nas profundidades de 0-10 e 10-20 cm. Todos os tratamentos com pastagem aumentaram a densidade do solo (ρ b ) e resistência à penetração (RP) e diminuíram a porosidade total (ƒ t ) e macroporosidade (ƒ ma ), em comparação com a NV. Os valores de ρ b (1,18-1,47 Mg m -3 ), ƒ ma (0,14-0,17 m 3 m -3 ) e PR (0,62-0,81 MPa) na profundidade de 0-10 cm não foram restritivos ao crescimento de plantas. A mudança de uso do solo a partir NV para CL ou CLF diminuiu o carbono orgânico (SOC) e o estoque de carbono orgânico (SOC...

show abstract

Section: Multivariate Analysessupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Physical quality of an Oxisol under an integrated crop-livestock-forest system in the Brazilian Cerrado

Neto

Andrioli

Almeida

et al. 2014

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

show abstract

“…In the constructed minesoil, the aggregation results are likely also derived from soil particle cohesion, due to intense machine traffic carried out in soil construction, as already discussed by Stumpf et al (2014). This type of condition was also reported in minesoils by Sencindiver and Ammons (2000) and in agricultural soils by Rev Bras Cienc Solo 2016;40:e0150482 Voorhees (1983), Carpenedo and Mielniczuk (1990), Topp et al (1997), Bergamin et al (2010), and Conte et al (2011).The soil used in recomposition of the mined area can reach its final construction stage in varying degrees of disintegration and compaction (Akala and Lal, 2001), and the use of machines at soil moisture close to the plastic limit is the main factor that causes compaction, since water reduces cohesion and acts as a lubricant between soil particles, allowing sliding and packing of particles when the soil is subjected to some sort of pressure (Luciano et al, 2012).…”

Section: Resultsmentioning

confidence: 54%

Reclamation of a Degraded Coal-Mining Area with Perennial Cover Crops

Pauletto

Stumpf

Pinto

et al. 2016

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

Studies addressing the potential of grass roots in improving the structural quality of constructed minesoils are not frequent in the literature, although they are essential for understanding the re-establishment of soil functions in the environment. The objective of this study was to quantify the root attributes of the species Urochloa humidicola, Panicum maximum, and Urochloa brizantha and relate them to the physical properties of a constructed minesoil in reclamation of an area degraded by coal mining. The study was performed in a field experiment in a coal mining area located in southern Brazil. Soil samples were collected, five years after experiment installation, to determine bulk density, macroporosity, distribution of water stable aggregates expressed in different size classes, mean weight diameter of water stable aggregates, and organic carbon content, as well as for chemical characterization. Root sampling was performed by the monolith method to a depth of 0.30 m. Results confirm the hypothesis that the root system of the perennial grasses studied positively contributes to recovery of the constructed minesoil in the 0.00-0.10 m layer after 58 months of revegetation. The higher percentage of large aggregates, higher bulk density, and lower macroporosity in the subsurface indicate the presence of degraded layers, negatively influencing the development of the grass root system. Urochloa brizantha exhibited the largest root matter in the surface layer, influencing the breakdown of the large and cohesive aggregates, transforming them into smaller crumbly aggregates. In the 0.10-0.20 m layer, Urochloa humidicola showed greater volume and root length in relation to other species; nevertheless, changes in soil physical properties were not observed, showing that the time span of the root growth of the species was not sufficient to provide improvements in the subsurface layers.

show abstract

“…Likewise, when MOS is protected in the interior of smaller soil aggregates or by strong bonding to the mineral fraction, its levels may remain close to original levels for several crop years (CONTE et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Oxidizable fraction of organic carbon in an Argisol under different land use systems

Müller

Weber

Scaramuzza

2012

CERNE

View full text Add to dashboard Cite

ABSTRACT:The objective of this study was to evaluate carbon input in labile and stable fractions in an ARGISOL of northwestern Brazil under different land use systems. Use systems being evaluated include: forest -MA (reference), agrosilvopasture -TCP (teak, cocoa and pasture); agroforest -TC (teak and cocoa); teak forest at 8 and 5 years -T8 and T5, and pasture -PA. In each system three furrows were made at depths of 0-5 cm, 5-10 cm and 10-20 cm. An area consisting of native vegetation (forest) adjacent to the experiment was sampled and used as control treatment. The use systems MA, T8 and T5 had higher levels of total organic carbon (COT) and the MA system had higher levels of labile carbon (CL) than the other systems, with the exception of TC at a depth of 10-20 cm. In the MA system, COT levels were higher in comparison to use systems TCP, TC and PA while CL levels were higher than the levels observed in use systems TCP and TC. In most cases being analyzed, CL levels were lower than COT levels, therefore this trait can be used as an indicator to assess anthropogenic changes relating to the maintenance or condition of soil organic matter.Key words: Soil compartments, Amazonia, lability. FRAÇÃO OXIDÁVEL DO CARBONO ORGÂNICO DE UM ARGISSOLO SOB DIFERENTES SISTEMAS DE USO

show abstract

Densidade, agregação e frações de carbono de um Argissolo sob pastagem natural submetida a níveis de ofertas de forragem por longo tempo

Cited by 29 publications

References 17 publications

Physical quality of an Oxisol under an integrated crop-livestock-forest system in the Brazilian Cerrado

Physical quality of an Oxisol under an integrated crop-livestock-forest system in the Brazilian Cerrado

Reclamation of a Degraded Coal-Mining Area with Perennial Cover Crops

Oxidizable fraction of organic carbon in an Argisol under different land use systems

Contact Info

Product

Resources

About