Effect of Dry Olive Residue–Based Biochar and Arbuscular Mycorrhizal Fungi Inoculation on the Nutrient Status and Trace Element Contents in Wheat Grown in the As-, Cd-, Pb-, and Zn-Contaminated Soils

Kateřina Vejvodová, Jiřina Száková, Mercedes García‐Sánchez, Lukáš Praus, Inmaculada García-Romera, Pavel Tlustoš