Alteração física e morfológica em solos cultivados com citros e cana-de-açúcar, sob sistema tradicional de manejo

Soares, Jorge Luís Nascimento; Espíndola, Carlos Roberto; Foloni, Luiz Lonardoni

doi:10.1590/s0103-84782005000200016

Cited by 13 publications

(15 citation statements)

References 7 publications

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“…Analyzing a comparable Rhodic Ferralsols with medium texture under sugarcane (Cerrado), Silva and Castro (2015) reported very similar results, with a porfiric pattern as a consequence of densified zones, reaching cementation of quartz grains (skeleton) by the compacted micromass. This was also corroborated by Silva et al (1998) and Soares et al (2005), who considered the porfiric pattern of Ferralsols as result of severe compaction, particularly in surface horizons of medium-texture soils. This results in a porostriated to granostriated b-fabrics under plane polarized light.…”

Section: Photomicrographs Of Ferralsols Under Native Vegetation (P1 Asupporting

confidence: 60%

Hydropedology of a High Tableland with Cerrado, Brazilian Central Plateau: the Frutal Catchment Case Study

Pereira

Almeida

Oliveira

et al. 2018

Rev. Bras. Ciênc. Solo

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Currently, the Brazilian savanna (Cerrado) represents the main agricultural area of the country, comprising a great variety of landscapes and soils, geological formations and vegetation patterns, as well as the major watershed. We studied the hydropedology and morphometry of a representative catchment (Frutal river), on a high tableland (Chapada) in the Triângulo Mineiro region, Brazil, describing the soil-water-landscape relationships to understand land use and water resources. To this end, we applied physical, chemical, micromorphological, and morphometric methods. When dry, compaction was observed in well-structured Ferralsols (Latossolos) with medium texture under intensive agriculture, reducing the water recharge capacity. The soil carbon stock was highest in hydromorphic savannas (veredas), reaching an organic matter content of 316.8 g kg -1 in the studied Umbric Gleysols, representing poorly drained lowlands. Physical and micromorphological properties were relevant parameters to understand the water recharge in soil; in agricultural fields, bulk density tended to increase and hydraulic conductivity to decrease, particularly under long-term sugarcane; morphometric parameters in the Frutal catchment indicated a low flooding risk and high flow capacity. This reinforces the need for soil conservation strategies to enhance water infiltration and groundwater recharge, with a view to maintain the water longer in the catchment. For surface water dynamics, slope morphology is an important property, affecting soil erosion, water retention and crop productivity.

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Section: Photomicrographs Of Ferralsols Under Native Vegetation (P1 Asupporting

confidence: 60%

Hydropedology of a High Tableland with Cerrado, Brazilian Central Plateau: the Frutal Catchment Case Study

Pereira

Almeida

Oliveira

et al. 2018

Rev. Bras. Ciênc. Solo

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“…Soares et al (2005a), estudando as alterações físicas e morfológicas em solos cultivados com citros e cana-deaçúcar sob sistema tradicional de manejo, observaram por meio de análises micromorfológicas, redução da macroporosidade e infiltração de água no solo, sendo esta redução mais intensa nos solos cultivados com canade-açúcar.…”

Section: Introductionunclassified

Micromorfologia do solo e sua relação com atributos físicos e hídricos

Souza¹,

Júnior²,

Cooper

et al. 2006

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a relação entre atributos micromorfológicos e físicos de um Latossolo Vermelho eutroférrico, sob cultivo de cana-de-açúcar. As amostras de solo foram coletadas nos pontos de cruzamento de uma malha, com intervalos regulares de 10 m, perfazendo um total de 100 pontos, nos horizontes A1 e AB. Os altos valores da densidade do solo, microporosidade e resistência do solo à penetração, e os baixos valores da macroporosidade, porosidade total e condutividade hidráulica do solo saturado, principalmente no horizonte AB, indicaram compactação confirmada pela análise de imagens (micromorfologia).Termos para indexação: Saccharum officinarum, resistência do solo à penetração, condutividade hidráulica do solo saturado, análise de imagens. Soil micromorphology and its relation with physical and hydrical attributesAbstract -The objective of this work was to evaluate the relationship between soil micromorphological and physical attributes in an Oxisol (Rhodic Eutrudox) under sugarcane. Soil samples were collected at the intersection points of a regular grid, with 10 m intervals, comprising a total of 100 points, in the horizons A1 and AB. The higher values for bulk density, microporosity and soil penetration resistance and lower values for macroporosity, total porosity and saturated hydraulic conductivity mainly in the AB horizon, indicated compaction in this horizon, confirmed by image analysis (micromorphology).

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“…In studies on soil physical alterations in soils cultivated with citrus, Soares et al (2005) also observed a reduction in soil water infiltration caused by compaction due to crop management practices. This reduction in K was a consequence of intensive machine traffic between the crop rows.…”

Section: Resultsmentioning

confidence: 94%

Deep subsoiling of a subsurface-compacted typical hapludult under citrus orchard

Medeiros¹,

Figueiredo

Mafra

et al. 2013

Rev. Bras. Ciênc. Solo

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SUMMARYSoil management practices which increase the root depth penetration of citrus are important to the longevity and yield maintenance of this plant, especially in regions where long periods of drought are common, even in soil conventionally subsoiled to a depth of 30-40 cm, when the orchard was first established. The objective of this study was to evaluate the efficiency of subsoiling on the physical and hydric properties of a Typical Hapludult and fruit yield in a 14-year-old citrus orchard located in Piracicaba, SP. The treatments consisted of: no-subsoiling (with no tilling of the soil after the orchard was planted); subsoiling on one side of the plant lines (Sub. 1); and subsoiling on both sides of the plant lines (Sub. 2). The subsoiling treatments were carried out 1.5 m from the plant lines and to a depth of 0.8 m. Soil samples were taken 120 days after this operation, at four depths, in order to determine physical and hydric properties. Fruit yield was evaluated 150 days after subsoiling. Subsoiling between the plant lines of an old established citrus orchard alters the physical and hydric properties of the soil, which is reflected in increased soil macroporosity and unsaturated hydraulic conductivity, and reduced soil bulk density, critical degree-of-compactness and penetration resistance. The improvements in the physical and hydric properties of the soil were related to an increase in fruit number and orchard yield.Index terms: soil compaction, soil management, soil physics, subsoiler.(

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Alteração física e morfológica em solos cultivados com citros e cana-de-açúcar, sob sistema tradicional de manejo

Cited by 13 publications

References 7 publications

Hydropedology of a High Tableland with Cerrado, Brazilian Central Plateau: the Frutal Catchment Case Study

Hydropedology of a High Tableland with Cerrado, Brazilian Central Plateau: the Frutal Catchment Case Study

Micromorfologia do solo e sua relação com atributos físicos e hídricos

Deep subsoiling of a subsurface-compacted typical hapludult under citrus orchard

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