Digestate, ash and Trichoderm based fertilizer – production line concept design Marcin Jewiarz, Marek Wróbel, Jarosław Frączek, Krzysztof Mudryk and Krzysztof Dziedzic MATEC Web Conf., 168 (2018) 04004 Published online: 23 May 2018 DOI: 10.1051/matecconf/201816804004