Evaluación de la repelencia al agua de algunos Andisols de Antioquia bajo cobertura de Pinus patula
Hydrophobicity of soils is present below an Andisols artificial forest of Pinus panda in the Piedras Blancas basin. In the surveyed 115 hectares the hydrophobic bed forms a discontinuous layer wich presents between 4 and 12 centimeters thick. It is recognized by their dusty and dry character. All the soils analyzed present strong repellence to water. Hydrophobicity values ranged from 24 to higher than 10800 seconds for the WDPT method; 0.2 to 5.2 molar for the MED method, with the contact angle method were obtained values between 65.5 and 134 degrees. No significant statistical correlation was found between the thick of the litter bed accumulated over the soil and the experimental hydrophobicity value, but with the thick of the hydrophobic bed had a strong positive correlation. It is believed that the decaying of root residues and litter bed, beside the root exhudates of Pinus panda are the main producers of hydrophobic substances.
| Main Authors: | , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Palmira
1991
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| Online Access: | https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/15506 |
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