Atributos físicos nos tempos de adoção de manejos em Latossolo cultivado com soja

Rossetti, Karina de Vares; Centurion, José Frederico; Oliveira, Paula Regina de; Andrioli, Itamar

doi:10.1590/s0100-06832012000200006

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Thus, it is important to consider all factors involved in the process of soil compaction. Rosseti et al (2012) reported that the desirable level of soil moisture content for optimum soil compaction for a soil with 340 g kg -1 of clay is from 0.13 to 0.19 kg kg -1 . Soil moisture content in this study was >0.22 kg kg -1 , for a matric potential of <10 MPa.…”

Section: Soil Physical Propertiesmentioning

confidence: 99%

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

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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...

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Section: Soil Physical Propertiesmentioning

confidence: 99%

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

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“…Soils with a higher friability better resist compression from surface pressures [43], but above this limit (in the plastic range) they offer favorable conditions for compaction [44]. Thus, it was observed that the mechanized harvesting sugarcane area presented a range of friability with water content between 0.20-0.34 kg kg −1 , whereas the burned harvest soil showed a friability ranging from 0.19-0.31 kg kg −1 , and the forest area, between 0.19-0.32 kg kg −1 (Figure 2).…”

Section: Comparison Of Models Between Layers Within the Managementmentioning

confidence: 99%

Load-Bearing Capacity of an Oxisol under Burned and Mechanized Harvest Sugarcane Crops

Silva Araújo,

Menezes de Souza,

Soares Souza

et al. 2023

Sustainability

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The change in land use and the expansion of mechanized sugarcane production systems have led to an increase in soil compaction levels. Preconsolidation pressure may be used as a useful measure for soil mechanical state, management, and planning of mechanization systems. This study aimed to assess the soil compressive behavior, soil physical properties, and spatial variability of preconsolidation pressure of an Oxisol in sugarcane fields under burned harvest and mechanized harvest and the effects of land use change. The physical soil attributes (granulometry, soil water content, bulk density, total porosity, and macro and microporosity) and preconsolidation pressure were evaluated at 0.00–0.10-m, 0.10–0.20-m, and 0.20–0.30-m layers. The soil load-bearing capacity models were constructed from σp values for soil water contents. We mapped the assessed soil attributes from crossing points in a sampling mesh with regular 10 m intervals in each area and evaluated them via geostatistics. Land-use change towards sugarcane production systems promoted soil compaction. The mechanized harvesting system increased the soil load-bearing capacity in the water range corresponding to the friability region in subsurface layers. The preconsolidation pressure and soil water content exhibited spatial dependence in the sugarcane areas, regardless of the management system employed in the harvesting operations.

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Sistemas de preparo do solo para o cultivo da batata-doce

Rós

2017

Bragantia

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Atributos físicos nos tempos de adoção de manejos em Latossolo cultivado com soja

Abstract: Atributos Físicos nos tempos de Adoção de mAnejos em LAtossoLo...

Cited by 3 publications

References 10 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

Load-Bearing Capacity of an Oxisol under Burned and Mechanized Harvest Sugarcane Crops

Sistemas de preparo do solo para o cultivo da batata-doce

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