ISSN 2285-5785, ISSN CD-ROM 2285-5793, ISSN ONLINE 2285-5807, ISSN-L 2285-5785


Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 1
Written by Liubov ISHCHUK, Victor ŢÎŢEI, Halyna ISHCHUK, Volodymyr HRABOVYI, Ion ROSCA, Alexei ABABII, Veceslav DOROFTEI, Nina GARSTEA, Natalia ONICA

The rapid development of global bioenergy makes it necessary to find and develop fundamentally new approaches to forest management. Promising plants are species and varieties of the genera Salix L. and Populus L., which are characterized by fast rates of biomass growth. Research has established that the annual growth of species and varieties of the genus Salix L. is 80-145 cm, and that of the genus Populus L. is 120-165 cm. The Salix viminalis phytomass is characterized by 3.53% ash, 44.9% cellulose, 24.7% hemicellulose, 9.1% acid detergent lignin, 50.22% C, 6.00% H, 0.89% N, 0.07% S, 0.05% Cl, 19.77 MJ/kg HHV and 18.46 MJ/kg LHV. The Populus alba phytomass contained 2.82% ash, 50.6 % cellulose, 19.1% hemicellulose, 7.3% acid detergent lignin, 47.83% C, 5.98% H, 0.80% N, 0.16% S, 0.04% Cl, 19.22 MJ/kg HHV and 17.91 MJ/kg LHV. The estimated theoretical ethanol yield from cell wall carbohydrates averaged 510.4 L/t in Salix viminalis substrate and 505.4 L/t in Populus alba substrate, as compared with 476.3 L/t in pruning residues substrate. The creation of short-rotation plantations of Salix L. and Populus L. will make it possible to reduce resource pressure on other categories of forests, increase the forest cover of territories and the productivity of plantations, shorten the time of growing wood with the possibility of its further use for energy purposes.

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