All Title Author
Keywords Abstract

Publish in OALib Journal
ISSN: 2333-9721
APC: Only $99

ViewsDownloads

Relative Articles

EFECTO DE LA MATERIA ORGáNICA Y EL MANEJO SOBRE LA HIDROFOBICIDAD DE SUELOS VOLCáNICOS Organic matter and management effect over hydrophobicity in volcanic ash soils

Calidad de la materia orgánica bajo diferentes practicas de manejo en un suelo ácido tropical.

Calidad de la materia orgánica bajo diferentes practicas de manejo en un suelo ácido tropical.

INDICADORES DE SUSTENTABILIDAD DEL MANEJO DE SUELOS EN LA PRODUCCIóN DE ARVEJA (Pisum sativum L.)

Cambios en fracciones dinámicas de la materia orgánica de dos suelos, inceptisol y ultisol, por el uso con cultivo de cítricas Changes in organic matter dynamic fractions of two soils, Inceptisol and Ultisol, by growing citrus crops

La materia orgánica particulada: comparación de métodos para su determinación y su valor como indicador de calidad de suelos del Chubut Particulate organic-matter: a comparison of methods for its determination and its role as an indicator of soil quality for some soils in the province of Chubut

Estrategia para el manejo de suelos ácidos en frijol (phaseolus vulgaris l.) en el estado de Chiapas, Mexico

Relación de la inestabilidad estructural con el manejo y propiedades de los suelos de la región pampeana Relation of structural instability with management and properties of soils in the Pampean region

Organic Matter Reduces Copper Toxicity for the Earthworm Eisenia fetida in Soils from Mining Areas in Central Chile Materia Orgánica Reduce la Toxicidad del Cobre para la Lombriz Eiseniafetida en Suelos de áreas Mineras en Chile Central

Ventajas del uso de las TIC en la ense anza/aprendizaje de la materia Contaminación de Suelos Advantages of Information and Communication Technologies (ICT) use in the teaching/learning process of Soil Pollution subject

More...

EFECTO DE LA MATERIA ORGáNICA Y EL MANEJO SOBRE LA HIDROFOBICIDAD DE SUELOS VOLCáNICOS

DOI: 10.4067/S0718-27912006000200002

Keywords: soil porous system, hydrophobic soils, contact angle.

Full-Text   Cite this paper   Add to My Lib

Abstract:

soil water repellence or hidrofobicity depends on a strong interaction among the mineral and organic soils fractions. the content of organic matter is an determinant factor of water repellence. a positive relationship between the content of organic matter and water repellence can be observed, however, not all organic matter may cause repellence in the soil matrix. more than the amount of organic compounds, the quality characteristics impact the hidrofobicity of soil. it is possible to find two types of repellencies:) natural and induced one. the repellence influence the magnitude of intermolecular electrical forces which act in the interface of solid-liquid-gas. this phenomenon can be evaluated by measuring the contact angle (θ) among these phases. soil management influence water repellency, but this effect is reduced by intense mechanical labor. hidrofobicity influence soil hydraulic characteristic, modifying preferential flows. the aim of this study was: i) determine the soil water repellency in three volcanic soils from southern of chile in combinations with two managements (forest and prairie) and ii) to estimate the buffer capacity by using a hydrophilic compound in the volcanic soils. it was observed different contact angle, attributed to soil characteristics, but with a direct effect of vegetation type which contributed to organic materials top cause repellence in these soils. soils with similar pedogenetic characteristics show different hydrophobic values for the same vegetation (forest or pastures). soils humectation capacity depends of the quality of soil organic matter more than som total content. buffer capacity of soils depended of the amount of som, and its interaction between mineral soil particles.

Full-Text

comments powered by Disqus