<i>Acacia Melanoxylon</i> and <i>Alnus Accuminata </i>Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda

Nsabimana Leonard; Rukangantambara Hamudu; Marguerite Mukangango; Francois Xavier Naramabuye; Khan Humayun

doi:doi:10.11648/j.ajaf.20251306.15

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Acacia Melanoxylon and Alnus Accuminata Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda

Nsabimana Leonard^*

, Rukangantambara Hamudu, Marguerite Mukangango, Francois Xavier Naramabuye, Khan Humayun

Published in American Journal of Agriculture and Forestry (Volume 13, Issue 6)

Received: 28 June 2025 Accepted: 19 July 2025 Published: 31 December 2025

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Abstract

Background: Soil chemical content can be usually influenced by tree speciespositively or negatively. It is necessary to study the effect of Acacia Melanoxylon and AlnusAccuminata tree species on some acidic soil content. The research was conducted in Rwanda forestry Authority (RFA)/ Ruhande Arboretum to assess the effect ofAcacia melanoxylon and Alnusaccuminataon nitrogen, soil organic matter, and soil acidity content in acidic soil. A Randomized Complete Block Design (RCBD) with three replications and three treatments were used. Soil sampling was done following the zigzag method per each treatment and each replication at two depths (0-15 and 15-30 cm). In each plot and each depth, ten soil samples were put together to make one composite sample. Results: The results indicated that the alter of soil chemical content can be influenced by tree species together with soil depths. The laboratory analyses indicated significant influence oftree specieson Soil pH, Organic Carbon, Organic Matter, Total Nitrogen, and Carbon to Nitrogen Ratio. The high values were observed under these two tree speciesand the low under fallow as a control for all parameters undertaken. The main factors should be the higher biomass and soil nutrients production under Alnusaccuminata comparatively to Acacia melanoxylon and fallow as control. Conclusion: The study indicated that tree species influence soil chemical content. Therefore, the establishment of Acacia melanoxylon and Alnusaccuminata tree species in farming systems like forestry and agroforestry under acidic soil is recommended andmuch should be done by Rwanda Ministry of Agriculture and Animal Resources (MINAGRI), Rwanda Forestry Authority (RFA) and Rwanda Environment Management Authority (REMA) to use these miracles tree species especially Alnus accuminata in farming systems where are suitable across the whole Country.

Published in	American Journal of Agriculture and Forestry (Volume 13, Issue 6)
DOI	10.11648/j.ajaf.20251306.15
Page(s)	304-312
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2025. Published by Science Publishing Group

Keywords

Soil Acidity, Soil Fertility, Agroforestry, Soil Nutrients Improvement, Acacia Melanoxylon, and AlnusAccuminata

References

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Leonard, N., Hamudu, R., Mukangango, M., Naramabuye, F. X., Humayun, K. (2025). Acacia Melanoxylon and Alnus Accuminata Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda. American Journal of Agriculture and Forestry, 13(6), 304-312. https://doi.org/10.11648/j.ajaf.20251306.15

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Leonard, N.; Hamudu, R.; Mukangango, M.; Naramabuye, F. X.; Humayun, K. Acacia Melanoxylon and Alnus Accuminata Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda. Am. J. Agric. For. 2025, 13(6), 304-312. doi: 10.11648/j.ajaf.20251306.15

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AMA Style

Leonard N, Hamudu R, Mukangango M, Naramabuye FX, Humayun K. Acacia Melanoxylon and Alnus Accuminata Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda. Am J Agric For. 2025;13(6):304-312. doi: 10.11648/j.ajaf.20251306.15

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@article{10.11648/j.ajaf.20251306.15,
  author = {Nsabimana Leonard and Rukangantambara Hamudu and Marguerite Mukangango and Francois Xavier Naramabuye and Khan Humayun},
  title = {Acacia Melanoxylon and Alnus Accuminata Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda},
  journal = {American Journal of Agriculture and Forestry},
  volume = {13},
  number = {6},
  pages = {304-312},
  doi = {10.11648/j.ajaf.20251306.15},
  url = {https://doi.org/10.11648/j.ajaf.20251306.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajaf.20251306.15},
  abstract = {Background: Soil chemical content can be usually influenced by tree speciespositively or negatively. It is necessary to study the effect of Acacia Melanoxylon and AlnusAccuminata tree species on some acidic soil content. The research was conducted in Rwanda forestry Authority (RFA)/ Ruhande Arboretum to assess the effect ofAcacia melanoxylon and Alnusaccuminataon nitrogen, soil organic matter, and soil acidity content in acidic soil. A Randomized Complete Block Design (RCBD) with three replications and three treatments were used. Soil sampling was done following the zigzag method per each treatment and each replication at two depths (0-15 and 15-30 cm). In each plot and each depth, ten soil samples were put together to make one composite sample. Results: The results indicated that the alter of soil chemical content can be influenced by tree species together with soil depths. The laboratory analyses indicated significant influence oftree specieson Soil pH, Organic Carbon, Organic Matter, Total Nitrogen, and Carbon to Nitrogen Ratio. The high values were observed under these two tree speciesand the low under fallow as a control for all parameters undertaken. The main factors should be the higher biomass and soil nutrients production under Alnusaccuminata comparatively to Acacia melanoxylon and fallow as control. Conclusion: The study indicated that tree species influence soil chemical content. Therefore, the establishment of Acacia melanoxylon and Alnusaccuminata tree species in farming systems like forestry and agroforestry under acidic soil is recommended andmuch should be done by Rwanda Ministry of Agriculture and Animal Resources (MINAGRI), Rwanda Forestry Authority (RFA) and Rwanda Environment Management Authority (REMA) to use these miracles tree species especially Alnus accuminata in farming systems where are suitable across the whole Country.},
 year = {2025}
}

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TY  - JOUR
T1  - Acacia Melanoxylon and Alnus Accuminata Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda
AU  - Nsabimana Leonard
AU  - Rukangantambara Hamudu
AU  - Marguerite Mukangango
AU  - Francois Xavier Naramabuye
AU  - Khan Humayun
Y1  - 2025/12/31
PY  - 2025
N1  - https://doi.org/10.11648/j.ajaf.20251306.15
DO  - 10.11648/j.ajaf.20251306.15
T2  - American Journal of Agriculture and Forestry
JF  - American Journal of Agriculture and Forestry
JO  - American Journal of Agriculture and Forestry
SP  - 304
EP  - 312
PB  - Science Publishing Group
SN  - 2330-8591
UR  - https://doi.org/10.11648/j.ajaf.20251306.15
AB  - Background: Soil chemical content can be usually influenced by tree speciespositively or negatively. It is necessary to study the effect of Acacia Melanoxylon and AlnusAccuminata tree species on some acidic soil content. The research was conducted in Rwanda forestry Authority (RFA)/ Ruhande Arboretum to assess the effect ofAcacia melanoxylon and Alnusaccuminataon nitrogen, soil organic matter, and soil acidity content in acidic soil. A Randomized Complete Block Design (RCBD) with three replications and three treatments were used. Soil sampling was done following the zigzag method per each treatment and each replication at two depths (0-15 and 15-30 cm). In each plot and each depth, ten soil samples were put together to make one composite sample. Results: The results indicated that the alter of soil chemical content can be influenced by tree species together with soil depths. The laboratory analyses indicated significant influence oftree specieson Soil pH, Organic Carbon, Organic Matter, Total Nitrogen, and Carbon to Nitrogen Ratio. The high values were observed under these two tree speciesand the low under fallow as a control for all parameters undertaken. The main factors should be the higher biomass and soil nutrients production under Alnusaccuminata comparatively to Acacia melanoxylon and fallow as control. Conclusion: The study indicated that tree species influence soil chemical content. Therefore, the establishment of Acacia melanoxylon and Alnusaccuminata tree species in farming systems like forestry and agroforestry under acidic soil is recommended andmuch should be done by Rwanda Ministry of Agriculture and Animal Resources (MINAGRI), Rwanda Forestry Authority (RFA) and Rwanda Environment Management Authority (REMA) to use these miracles tree species especially Alnus accuminata in farming systems where are suitable across the whole Country.
VL  - 13
IS  - 6
ER  -

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Author Information

Nsabimana Leonard

Department of Agricultural promotion (Specialization in Rural and Regional Development), Zhejiang Ocean University, Lincheng city, China

Contact Email

http://orcid.org/0009-0002-1791-7184
Rukangantambara Hamudu

Soil and Environment Management, University of Rwanda, Huye City, Rwanda
Marguerite Mukangango

Soil and Environment Management, University of Rwanda, Huye City, Rwanda
Francois Xavier Naramabuye

Soil and Environment Management, University of Rwanda, Huye City, Rwanda
Khan Humayun

Department of Agricultural promotion (Specialization in Rural and Regional Development), Zhejiang Ocean University, Lincheng city, China

http://orcid.org/0009-0009-0488-6631

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Leonard, N., Hamudu, R., Mukangango, M., Naramabuye, F. X., Humayun, K. (2025). Acacia Melanoxylon and Alnus Accuminata Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda. American Journal of Agriculture and Forestry, 13(6), 304-312. https://doi.org/10.11648/j.ajaf.20251306.15

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ACS Style

Leonard, N.; Hamudu, R.; Mukangango, M.; Naramabuye, F. X.; Humayun, K. Acacia Melanoxylon and Alnus Accuminata Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda. Am. J. Agric. For. 2025, 13(6), 304-312. doi: 10.11648/j.ajaf.20251306.15

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AMA Style

Leonard N, Hamudu R, Mukangango M, Naramabuye FX, Humayun K. Acacia Melanoxylon and Alnus Accuminata Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda. Am J Agric For. 2025;13(6):304-312. doi: 10.11648/j.ajaf.20251306.15

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@article{10.11648/j.ajaf.20251306.15,
  author = {Nsabimana Leonard and Rukangantambara Hamudu and Marguerite Mukangango and Francois Xavier Naramabuye and Khan Humayun},
  title = {Acacia Melanoxylon and Alnus Accuminata Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda},
  journal = {American Journal of Agriculture and Forestry},
  volume = {13},
  number = {6},
  pages = {304-312},
  doi = {10.11648/j.ajaf.20251306.15},
  url = {https://doi.org/10.11648/j.ajaf.20251306.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajaf.20251306.15},
  abstract = {Background: Soil chemical content can be usually influenced by tree speciespositively or negatively. It is necessary to study the effect of Acacia Melanoxylon and AlnusAccuminata tree species on some acidic soil content. The research was conducted in Rwanda forestry Authority (RFA)/ Ruhande Arboretum to assess the effect ofAcacia melanoxylon and Alnusaccuminataon nitrogen, soil organic matter, and soil acidity content in acidic soil. A Randomized Complete Block Design (RCBD) with three replications and three treatments were used. Soil sampling was done following the zigzag method per each treatment and each replication at two depths (0-15 and 15-30 cm). In each plot and each depth, ten soil samples were put together to make one composite sample. Results: The results indicated that the alter of soil chemical content can be influenced by tree species together with soil depths. The laboratory analyses indicated significant influence oftree specieson Soil pH, Organic Carbon, Organic Matter, Total Nitrogen, and Carbon to Nitrogen Ratio. The high values were observed under these two tree speciesand the low under fallow as a control for all parameters undertaken. The main factors should be the higher biomass and soil nutrients production under Alnusaccuminata comparatively to Acacia melanoxylon and fallow as control. Conclusion: The study indicated that tree species influence soil chemical content. Therefore, the establishment of Acacia melanoxylon and Alnusaccuminata tree species in farming systems like forestry and agroforestry under acidic soil is recommended andmuch should be done by Rwanda Ministry of Agriculture and Animal Resources (MINAGRI), Rwanda Forestry Authority (RFA) and Rwanda Environment Management Authority (REMA) to use these miracles tree species especially Alnus accuminata in farming systems where are suitable across the whole Country.},
 year = {2025}
}

Copy | Download

TY  - JOUR
T1  - Acacia Melanoxylon and Alnus Accuminata Effect on Some Acidic Soil Content: A Case Study of Southern Rwanda
AU  - Nsabimana Leonard
AU  - Rukangantambara Hamudu
AU  - Marguerite Mukangango
AU  - Francois Xavier Naramabuye
AU  - Khan Humayun
Y1  - 2025/12/31
PY  - 2025
N1  - https://doi.org/10.11648/j.ajaf.20251306.15
DO  - 10.11648/j.ajaf.20251306.15
T2  - American Journal of Agriculture and Forestry
JF  - American Journal of Agriculture and Forestry
JO  - American Journal of Agriculture and Forestry
SP  - 304
EP  - 312
PB  - Science Publishing Group
SN  - 2330-8591
UR  - https://doi.org/10.11648/j.ajaf.20251306.15
AB  - Background: Soil chemical content can be usually influenced by tree speciespositively or negatively. It is necessary to study the effect of Acacia Melanoxylon and AlnusAccuminata tree species on some acidic soil content. The research was conducted in Rwanda forestry Authority (RFA)/ Ruhande Arboretum to assess the effect ofAcacia melanoxylon and Alnusaccuminataon nitrogen, soil organic matter, and soil acidity content in acidic soil. A Randomized Complete Block Design (RCBD) with three replications and three treatments were used. Soil sampling was done following the zigzag method per each treatment and each replication at two depths (0-15 and 15-30 cm). In each plot and each depth, ten soil samples were put together to make one composite sample. Results: The results indicated that the alter of soil chemical content can be influenced by tree species together with soil depths. The laboratory analyses indicated significant influence oftree specieson Soil pH, Organic Carbon, Organic Matter, Total Nitrogen, and Carbon to Nitrogen Ratio. The high values were observed under these two tree speciesand the low under fallow as a control for all parameters undertaken. The main factors should be the higher biomass and soil nutrients production under Alnusaccuminata comparatively to Acacia melanoxylon and fallow as control. Conclusion: The study indicated that tree species influence soil chemical content. Therefore, the establishment of Acacia melanoxylon and Alnusaccuminata tree species in farming systems like forestry and agroforestry under acidic soil is recommended andmuch should be done by Rwanda Ministry of Agriculture and Animal Resources (MINAGRI), Rwanda Forestry Authority (RFA) and Rwanda Environment Management Authority (REMA) to use these miracles tree species especially Alnus accuminata in farming systems where are suitable across the whole Country.
VL  - 13
IS  - 6
ER  -

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