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Papers by Javier Ceballos-Freire
The quality in native seeds of Alnus acuminata, Guarea guidonia, Juglans neotropica, Retrophyllum... more The quality in native seeds of Alnus acuminata, Guarea guidonia, Juglans neotropica, Retrophyllum rospigliosii and Cordia gerascanthus was evaluated under three storage temperatures (4°C, 12°C and room temperature) for a period of six months. The seeds were collected is sources previously identified. Characteristics such as purity, weight and moisture were also established. In order to determine the different storage treatments, the seeds were grouped in pre-established ranks of CH, and then they were stored in different hermetic packings according to their moisture rank. Finally, they were located in cold rooms and in a warehouse to evaluate them at different temperatures. Before carrying out the germination tests in each evaluation period, two pre-germination treatments were conducted in each species. At the beginning, after the third and the sixth month the germination percentage, the germination vigor, the number of days to obtain total germination and the seed viability were ev...
Revista de Investigación Agraria y Ambiental, 2020
Contextualización: Las zonas rurales colombianas presentan un déficit en cobertura del servicio d... more Contextualización: Las zonas rurales colombianas presentan un déficit en cobertura del servicio de abastecimiento de agua segura o los sistemas de tratamiento ya implementados, no son suficientemente eficientes en la remoción de agentes patógenos. Vacío de conocimiento: Las aguas que se usan para el consumo no se tratan adecuadamente, sumado a la deficiente cobertura de abastecimiento de la misma, y a pesar de que la población realiza por cuenta propia el tratamiento del agua, no se garantiza que esté en óptimas condiciones para su consumo. Propósito del estudio: El objetivo de esta investigación fue determinar la eficiencia de remoción de un sistema domiciliario no convencional para el abastecimiento de agua segura en el corregimiento de San Fernando – Municipio de Pasto, Colombia. Metodología: Se desarrollaron tres fases. La primera fase estableció el diagnóstico de la zona de estudio, el cual contempló un mapa de riesgo, caracterización de la fuente de abastecimiento, caracteriza...
Revista de Ciencias Agricolas, 2024
Lack of data regarding the agricultural activities in the area of Imués (Nariño, Colombia) has hi... more Lack of data regarding the agricultural activities in the area of Imués (Nariño, Colombia) has hindered understanding of current land uses and their impacts on natural resources, which causes this area to be considered one of the most arid in the region. To comprehend these processes, a description of the main land uses and agricultural and livestock production systems was made. This was carried out from a social, economic, and environmental dynamic through the characterization and typification of farms. Groups or clusters were constructed, which were previously subjected to qualitative statistical analysis, using the multiple correspondence factor analysis (MCAF) method. Subsequently, the hierarchical classification method was applied. The MCAF was able to establish four factors that were framed in the interaction of climate, altitude, and the productive component associated with it. Similarly, taking into account the social, economic, and environmental perspectives, it was determined that these groups, under their particularities and agricultural vocations, exert pressure on the territory's strategic ecosystems and diversity of flora and fauna. This makes their rural activities unsustainable. It was also found that there is a vocation for livestock exploitation and some minor species in the middle and high-altitude zones of the territory. However, it was established for other groupings that their major typologies were associated with conventional management without any planning. This generates negative impacts on soil resources, such as erosion and forest fragmentation, together with the expansion of the agricultural frontier.
The quality in native seeds of Alnus acuminata, Guarea guidonia, Juglans neotropica, Retrophyllum... more The quality in native seeds of Alnus acuminata, Guarea guidonia, Juglans neotropica, Retrophyllum rospigliosii and Cordia gerascanthus was evaluated under three storage temperatures (4°C, 12°C and room temperature) for a period of six months. The seeds were collected is sources previously identified. Characteristics such as purity, weight and moisture were also established. In order to determine the different storage treatments, the seeds were grouped in pre-established ranks of CH, and then they were stored in different hermetic packings according to their moisture rank. Finally, they were located in cold rooms and in a warehouse to evaluate them at different temperatures. Before carrying out the germination tests in each evaluation period, two pre-germination treatments were conducted in each species. At the beginning, after the third and the sixth month the germination percentage, the germination vigor, the number of days to obtain total germination and the seed viability were ev...
Revista de Investigación Agraria y Ambiental, 2020
Contextualización: Las zonas rurales colombianas presentan un déficit en cobertura del servicio d... more Contextualización: Las zonas rurales colombianas presentan un déficit en cobertura del servicio de abastecimiento de agua segura o los sistemas de tratamiento ya implementados, no son suficientemente eficientes en la remoción de agentes patógenos. Vacío de conocimiento: Las aguas que se usan para el consumo no se tratan adecuadamente, sumado a la deficiente cobertura de abastecimiento de la misma, y a pesar de que la población realiza por cuenta propia el tratamiento del agua, no se garantiza que esté en óptimas condiciones para su consumo. Propósito del estudio: El objetivo de esta investigación fue determinar la eficiencia de remoción de un sistema domiciliario no convencional para el abastecimiento de agua segura en el corregimiento de San Fernando – Municipio de Pasto, Colombia. Metodología: Se desarrollaron tres fases. La primera fase estableció el diagnóstico de la zona de estudio, el cual contempló un mapa de riesgo, caracterización de la fuente de abastecimiento, caracteriza...
Revista de Ciencias Agricolas, 2024
Lack of data regarding the agricultural activities in the area of Imués (Nariño, Colombia) has hi... more Lack of data regarding the agricultural activities in the area of Imués (Nariño, Colombia) has hindered understanding of current land uses and their impacts on natural resources, which causes this area to be considered one of the most arid in the region. To comprehend these processes, a description of the main land uses and agricultural and livestock production systems was made. This was carried out from a social, economic, and environmental dynamic through the characterization and typification of farms. Groups or clusters were constructed, which were previously subjected to qualitative statistical analysis, using the multiple correspondence factor analysis (MCAF) method. Subsequently, the hierarchical classification method was applied. The MCAF was able to establish four factors that were framed in the interaction of climate, altitude, and the productive component associated with it. Similarly, taking into account the social, economic, and environmental perspectives, it was determined that these groups, under their particularities and agricultural vocations, exert pressure on the territory's strategic ecosystems and diversity of flora and fauna. This makes their rural activities unsustainable. It was also found that there is a vocation for livestock exploitation and some minor species in the middle and high-altitude zones of the territory. However, it was established for other groupings that their major typologies were associated with conventional management without any planning. This generates negative impacts on soil resources, such as erosion and forest fragmentation, together with the expansion of the agricultural frontier.