Assisted phytoextraction of heavy metals: compost and Trichoderma effects on giant reed (Arundo donax L.) uptake and soil N-cycle microflora

  • Nunzio Fiorentino Dipartimento di Agraria, Università di Napoli Federico II, Portici (NA), Italy.
  • Massimo Fagnano Dipartimento di Agraria, Università di Napoli Federico II, Portici (NA), Italy.
  • Paola Adamo | massimo.fagnano@unina.it Dipartimento di Agraria, Università di Napoli Federico II, Portici (NA), Italy.
  • Adriana Impagliazzo Dipartimento di Agraria, Università di Napoli Federico II, Portici (NA), Italy.
  • Mauro Mori Dipartimento di Agraria, Università di Napoli Federico II, Portici (NA), Italy.
  • Olimpia Pepe Dipartimento di Agraria, Università di Napoli Federico II, Portici (NA), Italy.
  • Valeria Ventorino Dipartimento di Agraria, Università di Napoli Federico II, Portici (NA), Italy.
  • Astolfo Zoina Dipartimento di Agraria, Università di Napoli Federico II, Portici (NA), Italy.

Abstract

Little information is available as to the real effectiveness of the phytoextraction remediation technique, since laboratory experiments are still the most common way in which this is measured. Given this, an experiment on a cadmium-polluted soil was carried out in open field conditions in Southern Italy with the aim of assessing the growth and the phytoextraction potential of giant reed (Arundo donax L). Compost fertilisation and Trichoderma harzianum A6 inoculations were used to verify the possibility of increasing the metal uptake of the crop. Biomass yield of giant reed in the first growth season (average 12.8 Mg ha–1) was not affected by the Cd concentration in the soil and this increased significantly with compost fertilisation (13.8 Mg ha–1). Both compost fertilisation and T. harzianum inoculation increased cadmium uptake and translocation in leaves. Nitrifying bacteria was shown to be a useful tool to biomonitor soil quality. These results proved the suitability of the giant reed for assisted-phytoremedation with the use of compost fertilisation and T. harzianum.

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Published
2013-12-09
Section
Original Articles
Keywords:
cadmium, inoculation, mycorrhiza, phytoremediation, potentially toxic elements.
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How to Cite
Fiorentino, N., Fagnano, M., Adamo, P., Impagliazzo, A., Mori, M., Pepe, O., Ventorino, V., & Zoina, A. (2013). Assisted phytoextraction of heavy metals: compost and Trichoderma effects on giant reed (Arundo donax L.) uptake and soil N-cycle microflora. Italian Journal of Agronomy, 8(4), e29. https://doi.org/10.4081/ija.2013.e29