Vegetative Propagation of Hallea stipulosa (DC.) J.-F.Leroy (Rubiaceae) in The Bioclimatic Conditions of Gemena in South Ubangi, Democratic Republic of the Congo

Mboka, Darly N.; Nyongombe, Nathan F. N. U.; Ndomba, Nicodème K.; Yange, Bienvenu S.; Bosanza, Jean-Bernard Z.; Mawunu, Monizi; Ashande, Colette Masengo; Basosila, Narcisse B.; Ngbolua, Koto-Te-Nyiwa

doi:10.21608/eajbsh.2023.299254

Vegetative Propagation of Hallea stipulosa (DC.) J.-F.Leroy (Rubiaceae) in The Bioclimatic Conditions of Gemena in South Ubangi, Democratic Republic of the Congo

Document Type : Original Article

Authors

¹ High School of Agricultural studies of Bokonzi, P.O. Box 67 Gemena, Democratic Republic of the Congo.

² Faculty of Agricultural Sciences, National Pedagogical University, P.O. Box 8815 Kinshasa-Ngaliema, Democratic Republic of the Congo.

³ Department of Agronomy & Botanical Garden, Kimpa Vita University, P.O. Box 77 Uíge, Republic of Angola

⁴ Department of Environment, Faculty of Science, University of Gbado-Lite, P.O. Box 111 Gbado-Lite, Democratic Republic of the Congo.

⁵ Department of Biology, Faculty of Science, University of Kinshasa, P.O. Box 190 Kinshasa XI, Democratic Republic of the Congo.

10.21608/eajbsh.2023.299254

Abstract

The aim of this study was to evaluate the rate of regrowth of Hallea stipulosa cuttings on different substrates by vegetative means, a hydrophytic species of the Mombonga and Labo rivers in Gemena (South Ubangi) in the Democratic Republic of the Congo (DRC). To collect the data a randomized experimental design consisting of four treatments was used, namely: T₀ (hydromorphic soil); T₁ (dry land soil + potting soil), T₂ (hydromorphic soil + potting soil), T₃ (dry land soil + dirt) and T₄ (sawdust + hydromorphic soil). The study showed that the regrowth rate was 100% six weeks after the experiment while the survival rate was constant for all treatments applied. T₃ (dry land soil + dirt) had a survival rate of 100% followed by T₄ (sawdust + hydromorphic soil) with 88.9%. The substrates T₀, T₁ and T₂ yielded 77.8%. The survival rate of the seedlings from the 2nd to the 5th week after taking over the cuttings showed a statistically significant difference between the treatments applied (p<0.05). With a survival rate of 88.9%, the average of T₄ (sawdust + hydromorphic soil) straddles the gap between these two groups and does not show a significant difference with all treatments. The T₃ and T₄ substrates (sawdust + hydromorphic soil) thus shorten the duration of cuttings for this plant species. Thus, the domestication of this multifunctional plant can reduce human pressure on natural forests while improving the lives of local communities by creating a productive ecosystem.

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