The comparison of single and double cut harvests on biomass yield, quality and biogas production of Miscanthus × giganteus

Marta Kupryś-Caruk and Sławomir Podlaski
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Marta Kupryś-Caruk: Department of Fermentation Technology, prof. W. Dąbrowski Institute of Agricultural and Food Biotechnology, Warsaw, Poland
Sławomir Podlaski: Department of Plant Physiology, Faculty of Agriculture and Biology, Warsaw University of Life Sciences, Warsaw, Poland

Plant, Soil and Environment, 2019, vol. 65, issue 7, 369-376

Abstract: The aim of the research was to determine the impact of double-cut harvest system on yield, as well as on suitability of Miscanthus × giganteus biomass for ensiling and biogas production. Biomass was harvested at the end of June (harvest I) and at the beginning of October (harvest II, regrowth). A single-cut regime at the end of October was also conducted. Biomass from harvests I and II was ensiled and subjected to anaerobic fermentation. The total dry matter (DM) yield from double-cut harvest system was similar to the DM yield from one-cut harvest, but two harvests per year had a positive effect on chemical composition of the biomass. C/N ratio and lignin content in the biomass from harvest I was lower compared to the single-cut biomass. Double harvest biomass was susceptible to ensiling, however, the biomass from harvest I characterized by low dry matter and water soluble sugars content resulted in poorer quality of the obtained silage (butyric acid was present). There were no significant differences between the methane yields obtained from ensiled biomass from harvests I and II.

Keywords: lignocellulose biomass; lignocellulosic material; energy production; energy crop; weather condition (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:65:y:2019:i:7:id:97-2019-pse

DOI: 10.17221/97/2019-PSE

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