This study distinguished the growth and element storage of Tectona grandis, Gmelina arborea, and Terminalia ivorensis planted at four various spacings in the five-old age-old spacing trial plots at Njala University; Southern Province, Sierra Leone. The structure adopted were 1.8 m x 1.8 m, 2 m x 2 m, 3 m x 3 m, and 4 m x 4 m. The study evaluated the effects of these spacings on sapling growth limits and carbon storage in duplicate-ground tree biomass. The class were planted in square plots consisting of four various spacings. Data was calm on tree height, width at breast climax, and crown width. The dossier were subjected to analysis of difference (ANOVA) to determine important differences in tree progress and carbon depository under different spacing levels at P < 0.05. Results disclosed that spacing had a statistically meaningful effect on basal area per hectare (P = 0.001) and crown breadth (P = 0.001), with the irregularities of total tree height (P = 0.354), width at breast altitude (P = 0.234), stand volume (P = 0.131), biomass (P = 0.114) and biomass carbon (P = 0.114). The results imitated the 1.8 m x 1.8 m spacing to introduction terms of total timber height (3.4 m) and basal district per hectare (2.15 m2 ha-1). The 2 m x 2 m gave best choice results for diameter at breast altitude (9.18 cm) and stand volume augmentation (5.29 m3 ha-1), while biomass (26.4 kg) and biomass carbon (11.86 kg C) were highest in the 3 m x 3 m organize. The widest organize 4 m x 4 m dominated in terms of crown breadth increment (4.776 m). The results plan the choice of spacing as a key determinant in gaining the intended administration objectives of plantation institution.

Author(s) Details:

Aruna Kainyande,
Chair of Tropical and International Forestry, Faculty of Environmental Sciences, Technische Universität Dresden, Tharandt, Germany.

Alie Kamara,
Department of Soil Science, School of Agriculture and Food Sciences, Njala University, Sierra Leone.

Stephen B. Mattia,
Department of Forestry, School of Natural Resources Management, Njala University, Sierra Leone.

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Keywords: Carbon storage, plantation-grown trees, spacing trial, tree growth, tree spacing

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