Uso Do Índice S Na Avaliação Da Qualidade Físico-Hídrica De Solos Do Cerrado Matogrossense

Jardini, Debora Curado; Amorim, Ricardo Santos Silva

doi:10.13083/reveng.v25i2.728

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…According to Carducci et al (2011) and Silva et al (2012), the curve shape reflects the soil pores distribution by size, which is affected by the soil management. Jardini and Amorim (2017), studying some physical attributes of different soils (Ultisols, Oxisols, Inceptisols and Entisols Quartzipsamments), found in the state of Mato Grosso, Brazil, under distinct uses (pastures, sugarcane, corn, soybeans and without agricultural use) in the Cerrado biome, verified a positive correlation between the S index and the soil organic carbon content. Li et al (2011) also observed a positive association between the S index and the organic matter content of an Ultisol under different managements in the Southeast region of Australia, which contrasts with our results.…”

Section: Resultsmentioning

confidence: 81%

Soil Physical Quality After Nitrogen Fertilizers Use in Irrigated Pasture of Tifton 85

Melo

Guimarães

Silva

et al. 2017

RSA

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-Tifton 85 (Cynodon sp.) is a forage crop widely used for the voluminous production, but it has also the potential to promote preservation or improvement in soil structural quality, when well managed. The aim of this work was to evaluate the soil physical quality in a rotational grazing area of Tifton 85 under irrigation in Prudente de Morais, MG, Brazil, due to the application of mineral and organic nitrogen fertilizers. The treatments included different forms of N supply: 400 kg ha -1 of urea; 400 kg ha -1 of bovine manure; 400 kg ha -1 of urea and manure, in proportion 1:1 and the control, without nitrogen fertilization. The following soil physical quality indicators were determined in the layers 0.0-0.05 m and 0.05-0.10 m after two years of N application: water retention curve, total porosity, macroporosity, microporosity, soil bulk density, available water capacity, bulk soil air capacity, soil matrix air capacity and relative water capacity. There were differences among the treatments, in both layers. In general, the treatments using bovine manure promoted greater water storage and availability, which was related to the increase of the microporosity, due to the organic matter effect. However, these same treatments presented a relative compaction, which was associated to the maintenance of higher soil moistures. It was concluded that, even under the effects of intensive grazing, there was generally adequate soil physical quality, but a special attention is recommended to the soil susceptibility to compaction.Keywords -water availability, soil aeration, organic fertilization, Cynodon sp.Resumo -O Tifton 85 (Cynodon sp.) é uma cultura forrageira muito utilizada para a produção de volumosos, mas também demonstra potencial para promover preservação ou melhoria da qualidade estrutural do solo, quando bem manejada. O objetivo deste trabalho foi avaliar a qualidade física do solo em área de pastejo rotacionado de Tifton 85 irrigado em Prudente de Morais, MG, Brasil, em função da aplicação de adubos nitrogenados de origem mineral e orgânica. Os tratamentos incluíram diferentes formas de suprimento de N: 400 kg ha -1 de ureia; 400 kg ha -1 de esterco bovino; 400 kg ha -1 de ureia e esterco, na proporção 1:1 e a testemunha, sem adubação nitrogenada. Determinaram-se os seguintes indicadores de qualidade física do solo nas camadas 0.0-0.05 e 0.05-0.10 m, após dois anos de manejo: curva de retenção de água, porosidade total, macroporosidade, microporosidade, densidade do solo, capacidade de água disponível, capacidade de aeração do solo, capacidade de aeração da matriz do solo e capacidade relativa de água no solo. Houve diferenças entre os tratamentos, em ambas as camadas. Em geral, os tratamentos com o uso de esterco promoveram maior retenção e disponibilidade de água, o que foi relacionado ao incremento da microporosidade, devido ao efeito da matéria orgânica. No entanto, esses mesmos tratamentos apresentaram uma relativa compactação, o que foi associado à manutenção de maiores umidades no solo. Concluiu-se ...

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Section: Resultsmentioning

confidence: 81%

Soil Physical Quality After Nitrogen Fertilizers Use in Irrigated Pasture of Tifton 85

Melo

Guimarães

Silva

et al. 2017

RSA

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“…Therefore, evaluating the physical-hydric quality of the soil is important to assess the potential of its use to ensure both food productivity as well as the sustainability of agroecosystems. Physical-hydric surveys are necessary to provide information on soil management, ensure decision-making for better use of this resource [86,87], and maintain water quality and sustainability in river basins [88]. Changes in land use can alter ecosystem services provided by the soil.…”

Section: Discussionmentioning

confidence: 99%

Effects of Land Use on Soil Physical-Hydric Attributes in Two Watersheds in the Southern Amazon, Brazil

Moratelli,

Alves,

Borella

et al. 2023

Soil Systems

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Changes in land use can cause degradation of soil physical quality with negative effects on the environment and agricultural production. The effects of different land uses on soil physical-hydric attributes were studied in the Renato River and Caiabi River watersheds in the southern Brazilian Amazon. Three conditions of land use were evaluated: native forest, crops, and pasture in the headwater, middle, and mouth of each watershed. Particle size, particle density, bulk density, total porosity, macroporosity, microporosity, water contents at field capacity and permanent wilting point, and available water capacity in soil were evaluated in three soil layers down to 0.4 m. Data collected were subjected to the Kruskal–Wallis nonparametric test and Pearson’s correlations. Multivariate analyses were also performed using the principal component method. In the Renato watershed, in comparison with native forest, conventional management of pasture and crops caused soil physical degradation, increasing soil density in the surface layer and reducing macroporosity and total porosity. In the Caiabi watershed, converting native forest areas into pasture and crops altered water quality, influencing the water dynamics in the soil, by reducing soil water conductivity. Soil attributes varied by watershed, with texture variations between the headwater and mouth, indicating that changes in soil properties result from both management and the granulometric composition of the soil in different regions of the same watershed. Adoption of crop and pasture conservation practices can improve soil physical attributes in regions bordering agricultural areas in the southern Amazon.

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“…O padrão atual de amostras são anéis de aço inox de 100 cm³ utilizados para determinar atributos físico-hídricos do solo (Kramer et al, 2013;Guimarães et al, 2014;Fidalski;Alves, 2015;Auler;Vieira, 2017;Jardini;Amorim, 2017;Pott et al, 2017). Apesar de ser o método padrão, é recorrente o uso de ferramentas de impacto, o que certamente resulta em perturbação das condições físicas originais do solo (Souza et al, 2014), o que não ocorre nos monolitos retirados por equipamento proposto por Venzon (2014).…”

Section: Introductionunclassified

Qualidade Físico-Hídrica De Monolitos De Solo De Volumes Variados Coletados Em Solos De Diferentes Granulometries/Physical-Hydric Quality of Soil Monoliths of Varying Volumes Collected in Soils of Different Particle Sizes

Venzon¹,

Silva²,

Bonfim-Silva³

et al. 2020

BJD

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Uso Do Índice S Na Avaliação Da Qualidade Físico-Hídrica De Solos Do Cerrado Matogrossense

Cited by 3 publications

References 6 publications

Soil Physical Quality After Nitrogen Fertilizers Use in Irrigated Pasture of Tifton 85

Soil Physical Quality After Nitrogen Fertilizers Use in Irrigated Pasture of Tifton 85

Effects of Land Use on Soil Physical-Hydric Attributes in Two Watersheds in the Southern Amazon, Brazil

Qualidade Físico-Hídrica De Monolitos De Solo De Volumes Variados Coletados Em Solos De Diferentes Granulometries/Physical-Hydric Quality of Soil Monoliths of Varying Volumes Collected in Soils of Different Particle Sizes

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