The Quality of Jerusalem Artichoke Biomass Harvested Twice during the Growing Season in North-Eastern Poland

Bożena Bogucka and Bogdan Dubis ()
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Bożena Bogucka: Department of Agrotechnology and Agribusiness, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, Oczapowskiego 8, 10-719 Olsztyn, Poland
Bogdan Dubis: Department of Agrotechnology and Agribusiness, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, Oczapowskiego 8, 10-719 Olsztyn, Poland

Energies, 2024, vol. 17, issue 16, 1-14

Abstract: Jerusalem artichoke (JA) ( Helianthus tuberosus L., family Asteraceae ) is an important feedstock for biofuel production due to its high biomass yield per unit area and the low costs associated with plantation establishment and cultivation technology. The chemical composition of the aerial biomass of JA grown in a perennial cycle and harvested once or twice during the growing season was determined, to assess the potential of JA for energy production. The experiment was conducted in 2018–2020 in north-eastern Poland. The study demonstrated that the crude ash (CA) content of the biomass was significantly (by 24.1%) higher when JA was harvested twice rather than once during the growing season, making it less suitable for energy purposes. However, double cutting induced an increase in the content of crude fiber (CFR), cellulose, and hemicellulose (by 87%, 41%, and 52%, respectively) in JA biomass compared with single cutting. In addition, twice-harvested JA biomass was also characterized by higher concentrations of neutral detergent fiber (NDF), acid detergent fiber (ADF), and acid detergent lignin (ADL) (by 40.7%, 38.9%, and 30.3%, respectively), and a lower (by 29.3%) concentration of water-soluble carbohydrates (WSC). These results indicate that the chemical composition of a JA biomass can be modified by selecting the appropriate harvest strategy, which is an important consideration for end users.

Keywords: Helianthus tuberosus L.; crude protein; crude ash; carbohydrates; cellulose; hemicelluloses (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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