Figure 6: Effect of wheat straw-olive-mill solid waste (W-OMSW), cow manure olive-mill solid waste (C-OMSW) and cow manure-wheat straw-olive-mill solid waste (C-W-OMSW) composts at two time intervals on the total dry weight of Vicia faba L. Considering the control values 2.61 g and 1.41 g after two and five months, respectively.