LEAD AND ZINC DISTRIBUTION IN BRASSICA JUNCEA AND ARID SOIL AMENDED WITH MINE TAILINGS AND BOKASHI
Por:
Barajas-Aceves M., Camarillo-Ravelo D., Juárez-Sánchez F., Rodríguez-Vázquez R.
Publicada:
1 ene 2012
Resumen:
Indian mustard (Brassica juncea) was grown in soil amended with mine tailings, bokashi and EDTA (ethylen-diaminetetraacetic acid), alone or mixed, for six weeks. Plant roots and shoots were then collected and analysed for Pb, Zn, Cd, Cu, Fe, Hg, As and Sb. Additionally, the soil treatments were analysed for Pb and Zn fractionation, exchangeable cations and microbial activities after harvesting the plants. The accumulation of all metals in roots was higher than in shoots. The soil treatment amended with bokashi had a high concentration of Na and Mg. The addition of mine tailings alone to soil inhibited 80% of the CO2 production, 18% of the dehydrogenase activity, and 7% of the N-mineralization. The addition of bokashi reduced the inhibition, but the addition of EDTA increased the inhibition of CO2 and stimulated the dehydrogenase activity and N-mineralization. Factor analysis supported the association of Na with the accumulation of heavy metals in the roots, and potential available Pb a
Filiaciones:
Barajas-Aceves M.:
Department of Biotechnology and Bioengineering, CINVESTAV-IPN, AV. IPN 2508, Col. San Pedro Zacatenco CP 07300 México, D.F., Mexico
Camarillo-Ravelo D.:
Department of Biotechnology and Bioengineering, CINVESTAV-IPN, AV. IPN 2508, Col. San Pedro Zacatenco CP 07300 México, D.F., Mexico
Juárez-Sánchez F.:
Univ Nacl Autonoma Mexico, Inst Goefis, Mexico City, DF, Mexico
Rodríguez-Vázquez R.:
Department of Biotechnology and Bioengineering, CINVESTAV-IPN, AV. IPN 2508, Col. San Pedro Zacatenco CP 07300 México, D.F., Mexico
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