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International Journal of Agronomy
Volume 2018 (2018), Article ID 5379047, 9 pages
https://doi.org/10.1155/2018/5379047
Research Article

Microorganisms in Soils of Bovine Production Systems in Tropical Lowlands and Tropical Highlands in the Department of Antioquia, Colombia

1Grupo Biología de Sistemas, Facultad de Medicina, Universidad Pontificia Bolivariana, Calle 78B No. 72A-109, Medellín, Colombia
2Grupo de Investigación Salud y Sostenibilidad, Escuela de Microbiología, Universidad de Antioquia, Calle 67 No. 53-108, Medellín, Colombia

Correspondence should be addressed to Leonardo Alberto RĂ­os-Osorio; oc.ude.aedu@soir.odranoel

Received 12 December 2017; Revised 12 February 2018; Accepted 19 February 2018; Published 21 March 2018

Academic Editor: Glaciela Kaschuk

Copyright © 2018 Licet Paola Molina-Guzmán et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Studies on the physical and chemical effects of extensive grazing on soils have been performed in Colombia, but the effects of dairy cattle rearing on the biological properties of soils are not well known. The objective of this study was to evaluate microorganisms in 48 soils from livestock farms in the highland and lowland tropics in the Northern and Magdalena Medio subregions of the Department of Antioquia (Colombia). Principal component analysis demonstrated differences in the edaphic compositions of the soils, with increased percentages of root colonization by arbuscular mycorrhizal fungi and the density of microorganisms in farms that have soils with moderate phosphorus and nitrogen contents, low potassium content, and a moderately acidic pH. Agglomerative cluster analysis showed two groups for the highland tropic soils and six groups for the lowland tropic soils based on their population densities and interactions with the studied parameters. These results represent a first attempt to describe the density of microorganisms and the effect of soil physicochemical parameters on colonization by arbuscular mycorrhizal fungi in areas with determinant agroecological conditions, microbial functional diversity, and the presence of mycorrhizal fungi in livestock farm soils in Colombia.