The low biomass of most Ni-hyperaccumulator plants can limit the applicability of phytomining techniques at field scale

The use of traditional agronomic practises such as fertilisation can improve plant establishment and biomass production of these plant species

Changes in soil Ni availability, shoot biomass production and Ni accumulation by four Ni-hyperaccumulator species were evaluated after soil inorganic fertilisation (NPK) or compost amendment

Intermediate doses of compost amendment had a stronger effect on Ni yield, mainly due to the enhanced shoot biomass

The use of organic wastes as amendments in phytomining permits the recycling of these residues