The overall experimental design of the final application conducted by the Technical University of Crete aimed to evaluate the efficiency of sewage sludge, olive mill wastewater and compost biochars as biostimulants in agriculture under field conditions. The application will be conducted between May 2022 and September 2022 in a field in the area of Akrotiri, in Chania, Greece.

Tomatoes are cultivated under field conditions with and without biochar amendment. Four conditions are tested: the “control” with no biochar amendment and the “sewage sludge”, “olive mill wastewater” and the “compost” biochar treatments corresponding to 25 t of biochars per ha. We are waiting for the results.