Cadmium phytoextraction with mulberry grass (Solanum nigrum L.) in soils grown with cocoa (Theobroma cacao L.)
| Autor: | Ramiro Ramírez Pisco, Daniela Giraldo Jiménez, Dairo Barrera Cruz |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
fitoextracción
Cadmio cacao Theobroma 0211 other engineering and technologies Soil Science chemistry.chemical_element Biomass 02 engineering and technology 010501 environmental sciences Biology Solanum nigrum 01 natural sciences Acclimatization lcsh:Agriculture phytoextraction 0105 earth and related environmental sciences 021110 strategic defence & security studies Cadmium fitotoxicidad lcsh:S toxicity Edaphic biology.organism_classification Horticulture Phytoremediation chemistry cocoa Soil water Agronomy and Crop Science |
| Zdroj: | Acta Agronómica, Volume: 67, Issue: 3, Pages: 420-424, Published: SEP 2018 Acta Agronómica, Vol 67, Iss 3, Pp 420-424 (2018) |
| ISSN: | 2323-0118 0120-2812 |
| DOI: | 10.15446/acag.v67n3.68536 |
| Popis: | Resumen La fitoextracción con plantas como hierba mora (Solanum nigrum L.) es una alternativa importante para la rehabilitación de suelos contaminados con cadmio (Cd). Esta especie, reconocida como hiperacumuladora, tiene capacidad para tolerar y crecer en suelos con altas concentraciones de este microelemento y constituye una alternativa de interés para los cultivadores de cacao (Theobroma cacao L.). Con el propósito de enfrentar la restricción para la comercialización de productos agrícolas que genera este elemento, se evaluó la respuesta de S. nigrum a las concentraciones de Cd: 0, 5 y 10 mg/kg en el suelo. Se halló una alta correlación entre los contenidos del elemento en el suelo y su acumulación en la planta, incrementando (P < 0.05) el área foliar (r2 = 0.63), la biomasa de la planta (r2 = 0.63) y biomasa tanto en raíz (r2 = 0.74) como en tallo (r2 = 0.47) y hojas (r2 = 0.68). Por tanto, S. nigrum L. constituye una alternativa en procesos de fitoextracción de este metal, ya que es una planta de rápido crecimiento, con bajas exigencias ambientales y alta capacidad de adaptación. Abstract 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. |
| Databáze: | OpenAIRE |
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