Phaseolus vulgaris en el tratamiento de suelo un agrícola contaminado por hidrocarburos
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J. Selva Andina Res. Soc.
Abstract
En suelo la contaminación por una mezcla de hidrocarburos como el aceite residual automotriz (ARA), inhibe la mineralización de la materia orgánica y causa perdida de su fertilidad. Una alternativa de solución es el enriquecimiento del suelo y plantas que lo eliminen a una cantidad inferior de 4400 ppm, valor máximo aceptado por la regulación en México conocida como NOM-138-SEMARNAT/SSA1-2003. El objetivo de este trabajo fue el tratamiento de suelo contaminado por 35000 ppm ARA con P. vulgaris inoculado con A. vinelandii y P. polymyxa para decrecer el ARA a un valor menor al máximo aceptado de la NOM-138. Las variables respuestas para determinar la recuperación del suelo en este ensayo fueron a) la concentración inicial y final de ARA por Soxhlet, y en b) P. vulgaris: el porcentaje (%) de germinación, en la fenología: altura de planta, longitud de raíz, y la biomasa: peso fresco y seco, aéreo y radical a plántula y prefloración. Los datos experimentales fueron analizados por Tukey 0.05%. Los resultados indican que el enriquecimiento del suelo, facilito que P. vulgaris con A. vinelandii y P. polymyxa a prefloración, decrecieran el ARA a 1152 ppm, valor menor al máximo aceptado por la NOM-138 para la recuperación de la fertilidad de ese suelo.
A soil polluted by waste motor oil (WMO) is inhibiting organic matter mineralization and caused losing its fertility. An alternative solution is to enrich soil and a plant to eliminate WMO at concentration value lower than 4400 ppm, maximum value accepted by the Mexican environmental regulation called NOM-138-SEMARNAT/SSA1-2003 (NOM-138). The objective of this research was to treat a soil polluted by 35,000 ppm of WMO with Phaseolus vulgaris inoculated with Azotobacter vinelandii and Paenibacillus polymyxa to reduce the WMO´s concentration at lower value than the maximum accepted by the NOM-138. The variable responses for recovering soil 'fertility of this experiment was a) the initial and final concentration of WMO by Soxhlet, and b) for P. vulgaris the percentage (%) of germination, the phenology: height of plant, length of root; and biomass: aereal and radical fresh/dry weight at seedlings and reflooring stages. Experimental data were analyzed by Tukey 0.05%. Results showed that soil enriched to facilitate that P. vulgaris with A. vinelandii and P. polymyxa at e-flowering, could reducing ARA until 1152 ppm, lower concentration than the maximum allowed by NOM-138 for recovering soil´s fertility.
A soil polluted by waste motor oil (WMO) is inhibiting organic matter mineralization and caused losing its fertility. An alternative solution is to enrich soil and a plant to eliminate WMO at concentration value lower than 4400 ppm, maximum value accepted by the Mexican environmental regulation called NOM-138-SEMARNAT/SSA1-2003 (NOM-138). The objective of this research was to treat a soil polluted by 35,000 ppm of WMO with Phaseolus vulgaris inoculated with Azotobacter vinelandii and Paenibacillus polymyxa to reduce the WMO´s concentration at lower value than the maximum accepted by the NOM-138. The variable responses for recovering soil 'fertility of this experiment was a) the initial and final concentration of WMO by Soxhlet, and b) for P. vulgaris the percentage (%) of germination, the phenology: height of plant, length of root; and biomass: aereal and radical fresh/dry weight at seedlings and reflooring stages. Experimental data were analyzed by Tukey 0.05%. Results showed that soil enriched to facilitate that P. vulgaris with A. vinelandii and P. polymyxa at e-flowering, could reducing ARA until 1152 ppm, lower concentration than the maximum allowed by NOM-138 for recovering soil´s fertility.
Description
Vol. 11, No. 2