Fitoextracción de cadmio con hierba mora (Solanum nigrum L.) en suelos cultivados con cacao (Theobroma cacao L.)

Acta Agronomica

Ramírez Pisco, Ramiro¹ 

[1] Universidad Nacional de Colombia, Medellín, Colombia

关键词: Cadmium;    phytoextraction;    Solanum nigrum;    cocoa;    toxicity.;   

DOI  :  10.15446/acag.v67n3.68536

学科分类：农业科学（综合）

来源: Universidad Nacional de Colombia * Facultad de Ciencias Agropecuarias Palmira

【 摘 要 】

An important step towards a restoration of cadmium-contaminated soils (Cd) is the use of phytoextraction, using plants such as blackberry (Solanum nigrum L.), a species reported as hyperaccumulating, capable of tolerating and developing in soils with high concentrations of Cd, which can be considered an alternative of interest for cocoa growers (Theobroma cacao L.). With the purpose of facing the restriction for the commercialization that generates this element, due to the norms of the commerce of grain, with high contents of Cd and the implications that represents in the human health, in addition, of the great number of families whose main sustenance comes from this alternative, the response of S. nigrum to three concentrations of Cd in the soil, T1: 0, T2: 5 , T3: 10 mg/kg was evaluated. It was evidenced as S. nigrum L. may be of interest for phytoextraction processes of this metal, since it is a fast growing plant, with low environmental demands and high acclimatization capacity. In this study a high correlation was found between the cadmium contents in soil and its accumulation in S. nigrum L., it was also found that the increase of cadmium in the edaphic medium favors the growth of this plant, increases the leaf area, enlarges the root biomass (r2 = 0.74 ) as well as stem and leaves in a significant way.

【 授权许可】

CC BY-NC-SA