Ultramafic outcrops located in eastern Albania hosts by native populations of Ni hyperaccumulator Alyssum murale. A field ex periment in situ was conducted in Pojske 2005-2006, that consisted in testing the phytoextraction potential of natural vegetation with or without suitable fertilisation and selective herbicide. In the stone time a greenhouse experiment consited in studying A. murale behaviour to different fertilisation regimes without other competitor species. The soil (Magnesic Vertic Cambisol) had mainly two Ni-bearing phases: high-Mg smectite (1.3％ mean Ni content) and serpentine (0.7％ Ni), the first one being a highly available source of Ni for plants. Accordingly, Ni availability was extremely high. Fertilisation and herbicide treatment in creased dramatically the biomass of A. murale. Phytoextracted Ni in A murale harvested reached 29.5 kg(Ni)·ha<-1> on the fertilised plots. It was significantly lower in urfertilised plots (1.8kg (Ni)·ha<-1>). Phytomining could be promising on such sites by fertilising already installed natural populations with limited effect of plant species control.
A Bani A. Mullai G. Echevarria G. Echevarria S. Sulce J. L. Morel
Agro-Environmental Department, Agricultural University of Tirana, Kamez, Albania Laboratoire Sols et Institute of Biological Researchs, Albania Correspondence Laboratoire Sols et Environnment INPL-ENSAIA/INRA UMR 1120, 2 Avenue de la For 阾 de ye, BP 172, 545 Laboratoire Sols et Environnment INPL- ENSAIA/INRA UMR 1120, 2 Avenue de la For 阾 de Haye, BP 172, 5 Agro-Environmental Department, Agricultural University of Tirana, Kamez, Albania Laboratoire Sols et Environnment INPL-ENSAIA/INRA UMR 1120, 2 Avenue de la For 阾 de Haye, BP 172, 54