Movilidad del cadmio en suelos cultivados con trigo en Tangua, Nariño, Colombia
2006; University of Nariño; Volume: 23; Issue: 1 Linguagem: Espanhol
ISSN
2256-2273
AutoresLiliana Insuasty B, Hernán Burbano Orjuela, Juan Carlos Menjívar Flores,
Tópico(s)Soil Science and Environmental Management
ResumoEn muestras de suelo cultivadas con trigo (Triticum aestivum) en Tangua (Narino) colocadas en nucleos de PVC (11 cm de diametro y 40 cm de largo) se aplicaron en forma fraccionada 0, 50 100 y 150 ppm de cadmio y se incubaron por cuatro meses manteniendo la humedad a capacidad de campo. Se evaluo el contenido de Cd-total y Cd-intercambiable en la parte superior, media e inferior de los nucleos. Los contenidos de Cd-total en testigo no sobrepasaron el limite permisible de 3 ppm establecido por OMSFAO. La mayor concentracion Cd-total aplicado y Cd intercambiable se encontro en la parte superior de los nucleos, lo cual indica baja movilidad del cadmio en el perfil de los suelos evaluados. ABSTRACT Mobility of the cadmium in soils cultivated with wheat in Tangua, Narino, Colombia. To test the cadmium mobility in soils cultivated with wheat some soils core samples with an auger of 11 cm in diameter and 40 cm in length were taken. On these soil samples, 0, 50, 100 and 150 ppm cadmium were applied, and they were incubated during a 4 - month period under field capacity later, the content of total cadmium and interchangeable Cd in the higher, median and lower part of nuclei was tested. The total cadmium contents in control does not overcome the permissible limits established by OMS-FAO wich is 3 ppm cadmium. The highest concentration of cadmium applied in the way of total Cd and interchangeable Cd was found in the higher third part of nuclei, which indicates a low mobility of the element in the soil profile.
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