Propriedades físicas do solo e crescimento de eucalipto implantado em diferentes métodos de preparo do solo

Rocha, Samara Pozzan da; Prevedello, Juliana; Reinert, Dalvan José; Vogelmann, Eduardo Saldanha; Soares, Júlio César Mendes; Heinz, Breno Bevilaqua

doi:10.18671/scifor.v43n108.20

Cited by 13 publications

(11 citation statements)

References 19 publications

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“…The decreasing linear behavior shown in Figure 2 describes the way the described phenomenon is also reflected in the total porosity of the soil, indicating a reduction in the values of this variable when PR increases. This result agrees with Rocha et al (2015), who also found that increasing soil density and penetration resistance reduced TP. Figure 3 shows the relationships between PR, macroporosity (Ma) and microporosity (Mi).…”

Section: Resultssupporting

confidence: 92%

Influence of Soil Compaction Levels on Cowpea Production

Silva

Olszevski

Pereira

et al. 2020

Reveng

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Cowpea, a short-cycle legume with large production in the North and Northeast regions, has its productive potential limited by edaphic characteristics and degradation processes of soil physical quality, such as compaction. This process may interfere with plant development and productivity by restricting root system growth, aeration, water and nutrient availability. The objective of this work was to analyze the interference of different levels of compaction in the soil physical characteristics, root growth, development of the aerial part and productivity of cowpea. The experiment was conducted in a greenhouse following a completely randomized design with a control (control) and four levels of soil compaction, with four replications. Each experimental unit was composed of PVC tubes composed of a 0.05-m layer of gravel, cotton fabric and a 0.04-m layer of soil. The different levels of compaction were obtained using a proctor socket and a wooden base. Based on the value of penetration resistance (PR) of 1.00 MPa, soil reached the macroporosity considered as critical theresohold for soil aeration. Results indicate that the higher the PR of the soil, the lower the development of the root system and the aerial part. The productive aspects of cowpea presented better results in plants grown in soils with a level of resistance to penetration close to 0.8 MPa.

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Section: Resultssupporting

confidence: 92%

Influence of Soil Compaction Levels on Cowpea Production

Silva

Olszevski

Pereira

et al. 2020

Reveng

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“…Macroporosity values in all studied management systems and layers were above the critical limit of 0.10 m³ m -3 , similar to the findings reported by and Rocha et al, (2015), who demonstrated that macroporosity values above this limit indicate favorable plant growth and root development conditions.…”

Section: Discussionsupporting

confidence: 89%

Physical Soil Attributes in Different Eucalyptus Crop Management Systems in Western Mato Grosso, Brazil

Florentim

Correa

Martins

et al. 2020

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Physical soil attributes in different eucalyptus crop management systems in western Mato Grosso, Brazil. The aim of this study was to determine the effect of four soil management systems on the physical attributes of an Oxisol for Eucalyptus crops in western Mato Grosso, Brazil. The management systems are differentiated by the soil preparation form during the implantation and initial forest establishment phases, namely a conventional system (plowing, harrowing and subsoiling for preparation and harrows for weed control after planting ) and a conservationist system (pasture desiccation, subsoiling, herbicide weed control and cover crop), with added differences in the eucalyptus fertilizer supply manner (haul and furrow). Nine soil layers were sampled continuously for each management system in between the sowing lines using 100 cm³ volumetric rings (0.05 m in diameter and height), totaling a studied layer of 0.45 m. The following variables were evaluated: total pore volume, microporosity, macroporosity, density and soil resistance to penetration. The different managements did not lead to significant differences for the studied attributes two years after forest establishment, with only a small depth effect observed. The attribute values are within the appropriate limits for eucalyptus crop development, indicating good soil quality under the eucalyptus forest for the study conditions.Keywords: Cover crop, Eucalyptus, soil management, soil penetration resistance.

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“…Nesse caso, os sistemas de manejo devem ter por objetivo condições adequadas a um satisfatório crescimento das florestas plantadas, aliado à conservação do solo. Rocha et al (2014) observaram um menor crescimento de plantas de eucalipto um uma área de solo argiloso quando foi adotado manejo sem revolvimento inicial do solo, o que foi relacionado à densidade do solo. Por sua vez o comportamento da densidade do solo tem relação com a granulometria do solo e o relevo (CEDDIA et al, 2009) A geoestatística é utilizada em áreas de exploração silviculturais para avaliar a dependência espacial de atributos do solo, constituindo eficiente suporte ao manejo do solo, da água e da vegetação, propiciando intervenções baseadas em mapas de isovalores das variáveis de interesse (CAVALCANTE et al, 2011…”

Section: Introductionunclassified

Variabilidade Espacial da Densidade do Solo em Área de Plantio Comercial de Eucalipto

Carvalho¹,

Polonio²,

Leda³

et al. 2015

Anais Do IV Simpósio De Geoestatística Aplicada Em Ciências Agrárias

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Em áreas de reflorestamento de eucalipto as alterações da densidade do solo podem ocorrer por causas naturais ou pelo uso da terra, favorecendo o processo de erosão e ainda dificultando o desenvolvimento inicial de mudas quando ocorre o replantio nas áreas colhidas. Este trabalho teve como objetivo verificar a variabilidade espacial e realizar o mapeamento desse atributo do solo, relacionando-o com as classes de solos e relevo na área do Horto florestal de Mogi Guaçu, no interior paulista. A amostragem teve padrão irregular, na camada 0-20cm. A variabilidade dos dados foi média, pelo coeficiente de variação. Foi observada forte estrutura de dependência espacial e o modelo exponencial foi ajustado ao variograma experimental. A representação contínua da densidade do solo em toda a área permitiu verificar que esse atributo tem moderada correlação com o relevo. Palavras-chave: geoestatística, atributos físicos do solo, mapeamento temático.

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Propriedades físicas do solo e crescimento de eucalipto implantado em diferentes métodos de preparo do solo

Cited by 13 publications

References 19 publications

Influence of Soil Compaction Levels on Cowpea Production

Influence of Soil Compaction Levels on Cowpea Production

Physical Soil Attributes in Different Eucalyptus Crop Management Systems in Western Mato Grosso, Brazil

Variabilidade Espacial da Densidade do Solo em Área de Plantio Comercial de Eucalipto

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