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Assessment of Soil Acidity and Fertility Status under Different Land Uses Types in Sayo District of Western Ethiopia

  • AGRICULTURAL SOIL SCIENCE AND AGROECOLOGY
  • Published:
Russian Agricultural Sciences Aims and scope

Abstract

Assessing the status of surface soil acidity under various land-use types on selected soil physicochemical properties is useful to tackle the expansion of soil acidity and mitigate its side effects in agro-ecosystems for the sustainable management of soil resources. As a result, this study was carried out to evaluate the status of soil acidity under different land use types in the Sayo District of Western Ethiopia. A total of 24 composite soil samples were collected from natural forest, cultivated land, grazing land and eucalyptus tree plantation landfrom the surface (0–20 cm) with three replications. Analysis of variance was used to test the mean differences in soil physicochemical properties under different land use types. Accordingly, sand and clay mean values were highest in cultivated and grazing land, respectively, whereas the lowest values were registered under grazing and cultivated land respectively. The lowest (0.93 cm–3) mean values of bulk density registered under natural forest land and the highest (1.50 cm–3) mean values recorded under eucalyptus tree plantation land, conversely the lowest (40.11%) and highest (55.99%) mean values of total porosity observed under eucalyptus tree plantation and natural forest land respectively. In the case of soil chemical properties, the highest (3.07) and lowest (0.47) mean values of the exchangeable acidity were observed under cultivated and grazing land respectively and the highest (35.10%) and lowest (3.26%) mean values of AS persentage were recorded under cultivated and grazing land respectively. The lowest (4.99) and highest (5.62) mean soil pH were observed under cultivated and grazing land respectively whereas the lowest (1.81%) and highest (7.94%) mean values of OM registered under cultivated and natural forest land respectively. the lowest (0.12%) and highest (0.47%) mean values of total N observed under eucalyptus tree plantation and natural forest land respectively while the lowest (3.35 mg/kg) and highest (11.95 mg/kg) mean value of available P registered under cultivated and grazing land respectively. Moreover the higher mean values of exchangeable bases, CEC and PBS were recorded under grazing and natural forest land whereas the lower recorded under cultivated and eucalyptus tree plantation land. Conversely, the higher mean values of extracted micronutrients were registered under cultivated and eucalyptus tree plantation land while the lower recorded were under grazing and natural forest land. Generally, the conversion of land use from natural states exaggerates the surface soil acidity of the study sites. Particularly, the cultivation of deforested land and grasslands reduces the soil pH which results in high total exchangeable acidity and acid saturation. The status of essential plant nutrients such as total nitrogen, available P, exchangeable cations and SOM (source of most nutrients) follows the trends of soil pH which results in the decline of soil productivity. Thus, sustainable soil ecosystem management is very essential to mitigate land degradations that result particularly for reduce agricultural production.

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Funding

The first author acknowledges Hawassa University for financial support of this study.

Author information

Authors and Affiliations

  1. Dambi Dollo University, College of Agriculture and Natural Resource, Department of Natural Resource Management, Dambi Dollo, Ethiopia

    Abu Regasa

  2. Hawassa University, College of Agriculture, School of Plant and Horticultural Science, Hawassa, Ethiopia

    Abu Regasa & Wassie Haile

  3. Ethiopian Agricultural Transformation Institute (ATI), Addis Ababa, Ethiopia

    Girma Abera

Authors
  1. Abu Regasa
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  2. Wassie Haile
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  3. Girma Abera
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Contributions

AR has made significant contribution in conception and designing of the study, soil sample collection, analysis, and interpretation; WH and GA have contributed in designing the study, interpretation of results and editing, commenting and suggesting ideas in the manuscript preparation process. Finally, all authors read and approved the final manuscript for publication.

Corresponding author

Correspondence to Abu Regasa.

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ETHICS APPROVAL AND CONSENT TO PARTICIPATE

This work does not contain any studies involving human and animal subjects.

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All authors agreed and approved the manuscript for publication in ecological process.

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The authors of this work declare that they have no conflicts of interest.

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The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Abu Regasa, Haile, W. & Abera, G. Assessment of Soil Acidity and Fertility Status under Different Land Uses Types in Sayo District of Western Ethiopia. Russ. Agricult. Sci. 50, 172–184 (2024). https://doi.org/10.3103/S1068367424700137

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