05 Apr Set up of a phytomanagement trial at the Durandeau site (NS1)
In March 2022, the concrete slab was removed on roughly 200 m² at the Durandeau site under the supervision of La Charente County partner and HPC-Envirotec. The 0 – 0.50 m soil layer was loosened. This area displayed high metal(loid), PAH, PCB, and trichloroethylene concentrations in the topsoil. Based on previous pot experiments carried out by INRAE, compost (5% w/w) was incorporated in the topsoil (0 – 25 cm, Jardins de l’Angoumois). Then an initial plant community (i.e. mycorrhized black poplars, goat willows, vetiver, Miscanthus x giganteus, Amorpha fruticosa, Agrostis capillaris, Festuca pratensis, Medicago sativa, and Lolium perenne, all plants prepared by INRAE) was implemented to promote the phytostabilization of metal(loid)s, Cd/Zn phytoextraction (by collecting poplar and willow leaves in autumn), rhizo/biodegradation of organic xenobiotics, and soil cover to prevent wind erosion and water runoff .
Besides, six large lysimeters were loaned to La Charente County and transported to the Durandeau site. Three lysimeters were filled with compost-amended soil and three others with unamended soil (from the field trial) to monitor changes in the drainage water. One mycorrhized poplar and A. capillaris were transplanted into each lysimeter. This field trial will be monitored under the supervision of La Charente County, with the help of other Phy2SUDOE partners (e.g. INRAE, CSIC).[/vc_column_text][/vc_column][/vc_row]