Effects of amendments on soil availability and phytoremediation potential of aged p,p′-DDT, p,p′-DDE and p,p′-DDD residues by willow plants (Salix sp.)

► Carboxylic acids enhance DDTs desorption from planted and unplanted soil. ► Pesticide availability is related with the release of dissolved organic carbon. ► Willow plants are suitable for the phytoremediation of aged DDT residues in soils.