Qualidade física de um cambissolo sob sistemas de manejo

Mota, Jaedson Claúdio Anunciato; Freire, Alcione Guimarães; Júnior, Raimundo Nonato de Assis

doi:10.1590/s0100-06832013000500009

Cited by 17 publications

(22 citation statements)

References 18 publications

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“…Esses resultados estão associados tanto ao incremento de argila como à redução no teor de areia em profundidade, resultando em distintas classes texturais. Comportamentos semelhantes foram observados por Mota et al (2008Mota et al ( , 2013Mota et al ( , 2014 ao analisarem atributos físicos também em um Cambissolo na Chapada do Apodi, CE. Os tratamentos que utilizaram sistema de irrigação apresentaram maiores quantidades de argila natural quando comparados à mata nativa.…”

Section: Resultsunclassified

Atributos Físicos de um Cambissolo Cultivado e Tratado com Biofertilizante na Chapada do Apodi, Ceará

Alencar

Chaves

Santos

et al. 2015

Rev. Bras. Ciênc. Solo

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resumo o conhecimento sobre as alterações físicas e qualidade do solo é importante para o direcionamento adequado das estratégias de manejo a serem utilizadas quando da exploração do solo por cultivos agrícolas. este trabalho teve como objetivo avaliar os efeitos do cultivo e da aplicação de um biofertilizante, obtido a partir de esterco bovino, sobre a qualidade física de um cambissolo cultivado com Ficus carica l., irrigado por sistema de gotejamento. Para fins de avaliação da qualidade física, foram contempladas cinco situações de solo: sob cultivo de figo sem aplicação do biofertilizante (testemunha); com aplicação de 20, 40 e 60 % do biofertilizante na lâmina de irrigação; e mata nativa secundária (testemunha adicional), até a profundidade de 0,3 m, nas camadas de 0,0-0,1, 0,1-0,2; e 0,2-0,3 m, com quatro repetições. nessas camadas, foram coletadas amostras de solo com estrutura deformada e indeformada para realizar análises físicas, como granulometria, argila dispersa em água, carbono orgânico, densidade das partículas e do solo, resistência do solo à penetração e curva característica de água no solo. o cultivo do solo nas condições descritas nesta pesquisa, como preparo do solo por aração e gradagem, uso de irrigação e todos os tratos culturais necessários à condução da cultura de figo, não piora a qualidade física do solo em nenhuma das camadas avaliadas. A aplicação de biofertilizante melhora a qualidade física do solo, particularmente no tocante à retenção de água em decorrência do aumento da microporosidade.Palavras-chave: degradação física do solo, matéria orgânica, cultura do figo.Recebido para publicação em 18 de julho de 2014 e aprovado em 13 de fevereiro de 2015.

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Section: Resultsunclassified

Atributos Físicos de um Cambissolo Cultivado e Tratado com Biofertilizante na Chapada do Apodi, Ceará

Alencar

Chaves

Santos

et al. 2015

Rev. Bras. Ciênc. Solo

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“…Mota et al (2008Mota et al ( , 2013 found similar results in a Cambissolo (1.6 g cm -³) and a Latossolo Vermelho-Amarelo (1.4 to 1.7 g cm -³) in the Chapada do Apodi.…”

Section: Resultsmentioning

confidence: 71%

Soil Water Retention in the Semiarid Region of Brazil

Silva¹,

Portela²,

Batista³

et al. 2018

JAS

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From the physics point of view, soil structure is a dynamic attribute that is affected by genetic conditions and anthropogenic changes and requires an integrated approach. Soil water retention curve is one of the main tools used in soil structure evaluations. The objective of this work was to evaluate the structural and chemical attributes of soils of different classes and agroecosystems in the Terra de Esperança Settlement (Governador Dix Sept Rosado, Rio Grande do Norte, Brazil) to distinguish these environments. Disturbed and undisturbed soil samples were collected in horizons of 10 soil profiles of the soil classes: Cambissolo Háplico (Haplustepts), Latossolo Vermelho-Amarelo (Eutrustox), Chernossolo Rêndzico (Calciustolls), and Neossolo Flúvico (Usticfluvents). The soil physical attributes evaluated were granulometry, soil density, total porosity, aeration porosity, macroporosity, microporosity, field capacity, permanent wilting point, available water, and water retention curve. The results were expressed in averages of four replicates per horizon (in laboratory) by multivariate analysis, which detected the most sensitive attributes for the distinction of the environments. The soil physical attributes of the different classes and its inorganic fractions, especially silt and clay, were determinant to distinguish the environments; they affected the microporosity; aeration porosity; and available water. The source material of the Chernossolo Rêndzico, which is rich in calcium and magnesium, affected its physical attributes, characterized by the predominance of the silt fraction. Clay was the determinant fraction of the Cambissolo Háplico, and Neossolo Flúvico; and the sand fraction on the surface layer, and clay fraction in the Bw horizon were determinant of the Latossolo Vermelho-Amarelo. The more expressive physical attributes were soil density, sand content, macroporosity (Latossolo Vermelho-Amarelo), microporosity, field capacity, available water, permanent wilting point, total organic carbon, mass-based moisture, volume-based moisture, clay, aeration porosity (Cambissolo Háplico, and Neossolo Flúvico), and silt (Chernossolo Rêndzico).

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“…However, other studies (Mota et al, 2013, Mota et al, 2015 reported that cultivated soils in the same region have no negative effect on soil physical quality. Literature shows that effects of management practices on soils under irrigated systems are not well understood for the Apodi Plateau region.…”

Section: Introductionmentioning

confidence: 89%

Soil Compressibility under Irrigated Perennial and Annual Crops in a Semi-Arid Environment

Watanabe

Figueiredo

Silva

et al. 2017

Rev. Bras. Ciênc. Solo

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ABSTRACT:In irrigated soils, a continuous state of high moisture reduces resistance of the soil to applied external forces, favouring compaction. The aim of this study was to evaluate the susceptibility to compaction of developed calcareous soils in irrigated annual and perennial cropping systems of the Apodi Plateau, located in the Brazilian semi-arid region. Four areas of irrigated crops were evaluated: banana after two (B2) and 15 (B15) years cultivation, pasture (P), and a corn and beans succession (MB), as well as the reference areas for soil quality and corresponding natural vegetation (NVB2, NVB15, NVP and NVMB). Samples were collected at layers of 0.00-0.10 and 0.20-0.30 m; and for B2 and B15, samples were collected in the row and inter-row spaces. The following properties were determined: degree of compactness (DC), preconsolidation pressure (σ p ), compression index (Cc), maximum density (ρ max ), critical water content (WC crit ), total organic carbon (TOC) and carbon of light organic matter (C lom ). Mean values were compared by the t-test at 5, 10, 15 and 20 % probability. An increase was seen in DC at a layer of 0.20-0.30 m in MB (p<0.15), showing the deleterious effects of preparing the soil by ploughing and chiselling, together with the cumulative traffic of heavy machinery. The TOC had a greater influence on ρ max than the stocks of C lom . Irrigation caused a reduction in Cc, and there was no effect on σ p at field capacity. The planting rows showed different behaviour for Cc, ρ max , and WC crit, , and in general the physical properties displayed better conditions than the inter-row spaces. Values for σ p and Cc showed that agricultural soils display greater load-bearing capacity and are less susceptible to compaction in relation to soils under natural vegetation.

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Qualidade física de um cambissolo sob sistemas de manejo

Cited by 17 publications

References 18 publications

Atributos Físicos de um Cambissolo Cultivado e Tratado com Biofertilizante na Chapada do Apodi, Ceará

Atributos Físicos de um Cambissolo Cultivado e Tratado com Biofertilizante na Chapada do Apodi, Ceará

Soil Water Retention in the Semiarid Region of Brazil

Soil Compressibility under Irrigated Perennial and Annual Crops in a Semi-Arid Environment

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