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| Jaramillo-Barrios,Camilo Ignacio; Ortiz-Rico,Andrés Felipe; Carrillo,Gustavo Alfonso Araujo; Varón-Ramírez,Viviana Marcela. |
| ABSTRACT Soils have the ability to maintain plant growth and biological activity due to their physical and chemical properties. The aim of this study was to observe the spatial distribution of some chemical properties of the soil, such as pH, organic matter (OM), electrical conductivity (EC), effective cation exchange capacity (ECEC), sulfur (S) and aluminum (Al) content and to establish zones with homogeneous chemical characteristics using the MULTISPATI-PCA technique and the fuzzy c-means algorithm. The study area was located in the Tundama and Sugamuxi Valleys (Boyacá, Colombia) with an area of 8,017 ha. Chemical properties such as pH, OM, EC, S, Al, and ECEC were indicators of the chemical degradation of these soils. Four homogeneous zones were... |
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Palavras-chave: Geostatistics; Semivariogram; Soil degradation; Multispati-PCA; Spatial distribution.. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100216 |
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| Varón-Ramírez,Viviana Marcela; Camacho-Tamayo,Jesús Hernán; González-Nivia,Janeth. |
| ABSTRACT The physical characteristics of the soil are defined through the interaction between its properties, and they, in turn, can indicate its physical quality. The study area is located in the Centro Agropecuário Marengo (Marengo Agricultural Center), with an extension of 94.5 ha, subdivided into 17 plots. The objective of this research was to study characteristics such as water storage capacity, structure, consistency, and soil compaction in the two surface horizons (H1 and H2), in order to define management zones through the soil index. Properties such as soil penetration resistance were an indicator of soil degradation, with values higher than 2 MPa in 13 plots. The total porosity exhibited medium or low values in the H1 and H2 horizons, with a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil degradation; Soil compaction; Soil water storage; Soil index.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000300248 |
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