Aplicación de la colorimetría en la determinación del contenido de la materia orgánica de los suelos
Studies were conducted on the content of organic matter of soils from three different regions of the country due to their climatic and edaphic conditions; the “Sabana de Bogotá”, the “Risaralda Valley” and the “Cauca Valley". Only the plowable surface was studied of this last region, while on the two first ones, both the subsoil and the plowable surface were included.Two methods were used, the volumetric titration and the colorimetric method in order to search the possibility of adapting this last one as a routine method in the soil laboratories.The plowable surfaces of the series of the “Sabana de Bogotá” presented the largest content of organic matter (5.379%), while the soils of the “Cauca Valley” reached only 3.268% and the “Risaralda Valley” had an intermediate content of 4.207%.Soils of all regions and surfaces gave o highly significant negative correlation between the percentage of transmittance and the content of organic carbon. The largest correlation was for the subsoils of the “Sabana de Bogotá” (—0.943) and the lowest one was for the subsoils of “Risaralda Valley" (—0.739).The transmittances percentages were not statiscally affected by the changes in turbidity within the first four hours after the color appeared.
| Main Authors: | , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad Nacional de Colombia - Sede Palmira
1966
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| Online Access: | https://revistas.unal.edu.co/index.php/acta_agronomica/article/view/86314 |
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