2013/4/1/ · Composting and co-composting of olive mill solid waste (wet husk) is receiving an increasing attention (Alfano et al., 2008, Hachicha et al., 2009), and the resulting compost has recently been shown to improve nutraceutical traits of horticultural crops (Ulrichs et al., 2008) and to represent a fertilizer for short-term crops (Altieri and Esposito, 2010).