A1 Journal article (refereed)
Risk of Invasive Lupinus polyphyllus Seed Survival in Biomass Treatment Processes (2021)

Hassani, M., Vallius, E., Rasi, S., & Sormunen, K. (2021). Risk of Invasive Lupinus polyphyllus Seed Survival in Biomass Treatment Processes. Diversity, 13(6), Article 264. https://doi.org/10.3390/d13060264

JYU authors or editors

Publication details

All authors or editors: Hassani, Marjaana; Vallius, Elisa; Rasi, Saija; Sormunen, Kai

Journal or series: Diversity

eISSN: 1424-2818

Publication year: 2021

Publication date: 11/06/2021

Volume: 13

Issue number: 6

Article number: 264

Publisher: MDPI AG

Publication country: Switzerland

Publication language: English

DOI: https://doi.org/10.3390/d13060264

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/76536

Abstract

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

Keywords: introduced species; lupines; seeds; germination; plant residues; biomass (industry); temperature; composting

Free keywords: invasive alien species; mesophilic anaerobic digestion; seed germination; static pressure; temperature; tunnel composting; windrow composting

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2021

JUFO rating: 1