Risk of Invasive Lupinus polyphyllus Seed Survival in Biomass Treatment Processes

Invasive plant species threaten native and habitats causing ecologic, economic social burden. When creating climate friendly solutions by utilizing biomasses in biogas fertilizer production, safety should be ensured concerning the use of residues. This study concentrates on treatment containing invasive material tunnel windrow composting, farm-scale laboratory-scale anaerobic digestion (AD) mesophilic conditions. Germination nationally settled harmful Lupinus polyphyllus Lindl. was investigated after these processes. In addition, role conditions found processes that destroyed seeds were studied, such as time exposure, temperature static pressure. Dormant are well protected against harsh can survive through various stress factors, but also become vulnerable more factors combined exposure is extended. Our results suggest risks involved for utilization increase with temperatures single treatments if processing not stabile. One-month composting showed a high risk dormant L. to survive, whereby extending reduced it substantially. Hard coated thus broken combination thermophilic temperatures, moisture