Biomass production and energy potential of some eastern cottonwood (Populus deltoides Bartr. ex Marsh.) clones in relation to planting spacing.
Year: 2013
Type: article
Abstract: Th e possibility of biomass production was studied in an experimental trial stand with four clones of Eastern cottonwood Populus deltoides Bartr.ex Marsh.cl.457, cl.450, cl.618 and cl.55/65 and three stand densities a) 1.2 × 1.0 m (8330 plants•ha -1 ), b) 1.2 × 0.75 m (11110 plants•ha -1 ) and c) 1.2 × 0.5 m (16600 plants•ha -1 ).Field trials were conducted on sandy-loamy form of fl uvisol.Total determined volume of trunk, bark, and branches in the fi rst two-year cycle for the used Eastern cottonwood ranged from 27.391 m 3 •ha -1 in clone 450 at planting distance of 1.2 × 1.0 m, subtreatment (a) to 42.006 m 3 •ha -1 in clone 618, subtreatment (c) at planting distance of 1.2 × 0.5 m.Aft er renovation of stand using the regeneration force of shoots from the tree stumps the produced wood mass in the second two-year cycle ranged from 54.664 m 3 •ha -1 in clone 55/65, subtreatment (a) to 79.235 m 3 •ha -1 in clone 450, subtreatment (b).In additon to clone selection a signifi cant infl uence on biomass yeald was also exerted by stand density (number of plants•ha -1 ).Th e largest amount of heat energy would be obtained in subtreatment (c) at density of 1.20 × 0.5 m by combustion of biomass of above ground part of clone 55/65: 364.02GJ•ha -1 in the fi rst cycle, and 659.83GJ•ha -1 in the second, or a total of 1023.85GJ•ha -1 .
Language: English
Subfield: Agronomy and Crop Science
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W270644952