CE:3417 CF: cag083172137
RESEARCH ARTICLE
Mineral content in soil and pasture in bovine dairy herds of the Andean region of Ecuador
Contenido mineral en suelo y pastos en rebaños bovinos lecheros de la región andina de Ecuador
Luís Rodrigo Balarezo Urresta1, Juan Ramón García-Díaz2, Ernesto Noval-Artíles2, Hernán Benavides Rosales1, Segundo Ramiro Mora Quilismal1, Silvino Vargas-Hernández2
1 Proyecto de mejoramiento de la competitividad láctea en la provincia del Carchi. Escuela de Desarrollo Integral Agropecuario, Facultad de Industrias Agropecuarias y Ciencias Ambientales Universidad Politécnica del Carchi. Calle Antisana y Av. Universitaria Tulcán, Carchi, Ecuador. CP 040102
2 Departamento de Medicina veterinaria y Zootecnia, Facultad de Ciencias Agropecuarias, Universidad Central "Marta Abreu" de Las Villas. Carretera a Camajuaní Km. 5 ½, Santa Clara, Villa Clara, Cuba . CP 54830
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ABSTRACT
The objective of this research was to characterize the mineral status of the soil and pasture in of the Andean Ecuadorian region, during the rainy and dry periods, three dairy farms were used as study cases investigated him three dairy farms of the El Carchi province. They determined the chemical indicators of the soil and the pasture, the descriptive statisticians were calculated themselves and It was used a multifactorial ANOVA to determine the main factors affecting them on them, comparing means with Bonferroni and Duncan test. The soil classified as acid lightly, 100 % of the samples presented elevated levels of organic matter, NH4+, Mg, Cu, Zn, Fe and Mn. The farm had a significant effect on the pH, Ca, Mg, K, Cu, Fe, Mg and P, and the climatic period on the organic matter, NH4+, S, Cu and P. Pasture presented deficiencies of Mg, Zn and Na, the other minerals were above the critical limits. The farm affected the Ca, P, Mg, Na and Mn, and the climatic period the levels of Ca, K, Cu y Zn. In conclusion, 100 % soil samples presented high OM, slight acidity, low levels of Ca and high concentrations of NH4+, S, Mg, Cu, Zn and Mn. In pastures, there were diagnosed deficiencies of P, Cu and Zn, and their concentrations differed among farms and the two climatic periods of the year.
