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All Journal Budapest International Research in Exact Sciences (BirEx Journal) Britain International of Exact Sciences Journal (BIoEx Journal)
K.N. Ngbolua
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Mathematics Medicine & Pharmacology Physics Transportation

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 1 
Ethnobotanical Survey and Sociocultural Uses of Two Plant Species of the Genus Alstonia (Apocynaceae) in the Kungu Territory (South Ubangi) in the Democratic Republic of the Congo J.B.Z. Bosanza; K.N. Ngbolua; D.B. Manzongo; C.A. Masengo; M. Monizi
Budapest International Research in Exact Sciences (BirEx) Journal Vol 4, No 4 (2022): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v4i4.7127

Abstract

The aim of the present study is to provide actors interested in herbal medicine with endogenous knowledge on the medicinal and traditional uses of Alstonia boonei and A. congensis in the Kungu territory. The survey revealed that both are widely used either alone or in combination with other species and contribute to the treatment of many diseases. Endogenous knowledge of these two species and their medicinal-traditional uses reveal that 23 kinds of diseases are treated, of which snakebite the only disease is commonly treated by the three sociocultural groups targeted in this study, namely Bomboma, Ngbandi, and Ngombe. Of the different plant parts used in the preparation of therapeutic recipes, bark dominates with 58.8%, followed respectively by sap (22.4%), leaves (12.9%), and roots (5.9%). Finally, as forests are increasingly threatened, it would be imperative to preserve these two medicinal species by developing, for example, their cultivation and thus guarantee a sustainable and regular supply of organs used as raw materials in the preparation of medicinal recipes.
Influence of the Season on Armyworm (Spodoptera frugiperda J.E. Smith) Attacks on Some Bio-fortified maize (Zea mays L.) Varieties Introduced in Kisangani Eco-region (Democratic Republic of the Congo) D. Bangambingo; B.D. Nzawele; C.L. Inkoto; A.K. Lubobo; O. Mubenga; K.N. Ngbolua; G. Monde
Budapest International Research in Exact Sciences (BirEx) Journal Vol 4, No 4 (2022): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v4i4.6982

Abstract

The present study was conducted in the Kisangani region of the northeastern Democratic Republic of Congo in 2018-2019. The objective was to evaluate the influence of the seasons in the face of armyworm attacks on the behavior of three new biofortified maize varieties being introduced in the Tshopo Province. These trials were conducted using a split plot design with three replications and the results were analyzed using R Studio version 3.6 statistical software. The results at (p<0.05) show that all three varieties were attacked by armyworms. The overall average incidence was significantly similar to that of the control. During two cropping seasons, the maize varieties tested showed variable armyworm attack rates: Yellow Plata (14.16%) SAM4 VITA/A (18.05%) SAM4 VITA/B (16.44%) and PVA SYN- 18 F2'' (14.66%). As for the variation of attack between seasons, the results of the statistical analysis showed that season B had a higher attack rate (25.54%) than season A (6.11%).
Effects of Fertilization, Variety and Season on Fall Armyworm Attack on Bio-fortified Maize Production in the Kisangani Eco-region (Democratic Republic of the Congo) D. Bangambingo; B.D. Nawelze; O. Mubenga; A.K. Lubobo; C.L. Inkoto; K.N. Ngbolua; G. Monde
Budapest International Research in Exact Sciences (BirEx) Journal Vol 4, No 4 (2022): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v4i4.6983

Abstract

Faced with soil impoverishment and irregular rainfall caused by climate change, a study has been initiated on the cultivation of bio-fortified maize in Kisangani in the Northeast of the Democratic Republic of the Congo. The study aimed at evaluating fertilization effects, new bio-fortified maize varieties and the season (Zea mays L) on production in the face of armyworm infestation. The split-plot experimental set-up was used, the first factor has been the variety and the second the fertilizers. The results have highlighted that the application of fertilizers at the sowing time does not significantly influence any production parameter. However, experimented maize varieties have differently behaved depending on seasons when the armyworm infestation.
Reproductive Performance of Nile Tilapia (Oreochromis Niloticus Linnaeus, 1758) Fed on Periphyton and Rice Bran in Gemena City (Sud-Ubangi Province) in Democratic Republic of the Congo A.G. Kongbo; F.K. Mukonga; F.N.U. Nyongombe; M. Monizi; K.N. Ngbolua
Britain International of Exact Sciences (BIoEx) Journal Vol 6 No 1 (2024): Britain International of Exact Sciences Journal, January
Publisher : Britain International for Academic Research (BIAR) Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/bioex.v6i1.1039

Abstract

The overall aim of this study was to evaluate the reproductive performance of Oreochromis niloticus reared in ponds fed with periphyton and rice bran. It was carried out using a database resulting from an experiment carried out in the Gemena town hall, South Ubangi province in the Democratic Republic of Congo with Oreochromis niloticus fry fed on periphyton and rice bran. The methodological approach consisted of sampling the physico-chemical parameters of the pond water and the reproductive parameters, in particular the gonado-somatic ratio (GSR), the condition factor (K), fecundity and oocyte size. After analysis by pond category, it was found that the two treatments differed in terms of gonado-somatic ratio and condition factor. Treatment T1 is characterised by a relatively better value (RGS varying from 0.35 to 5.03 and K varying from 0.47 to 6.75) than treatment T0 (RGS varying from 0.34 to 3.91 and K varying from 0.20 to 3.26). The absolute fecundity of Oreochromis niloticus in the ponds with rice bran and those with periphyton varied respectively from 216-1504 and 279-1570. In contrast, the relative fecundity was 3.17-15.7 for the ponds with rice bran and 5.49-17.2 for the ponds with periphyton. These values correspond to total lengths of 11.6-18.1 Cm and 14.6-22.2 Cm, respectively. Oocyte diameter ranged from 0.95-2.00 mm, with an average of 1.63±0.05 mm, and from 0.89-2.15 mm, with an average of 1.59±0.05 mm, for females from ponds with rice bran and those with periphyton, respectively. At the end of this study, the results obtained showed that the females fed with periphyton showed a higher relative fecundity than those fed with rice bran. The data collected on the reproductive parameters indicate better reproductive performance in ponds fed with periphyton than in ponds fed with rice bran.
Co-Authors A.G. Kongbo A.K. Lubobo B.D. Nawelze B.D. Nzawele C.A. Masengo C.L. Inkoto D. Bangambingo D.B. Manzongo F.K. Mukonga F.N.U. Nyongombe G. Monde J.B.Z. Bosanza M. Monizi O. Mubenga