The Effects of Eucalyptus globulus On Some Selected Soil Physical And Chemical Properties In Elu Gelan District, Ardajila Kebele, Oromia Regional State of Ethiopia

Abstract

Eucalyptus (Bahirzaf) is most commonly exotic tree naturally found in Australia and commonly planted in Ethiopia. This study aims to evaluate the impact of Eucalyptus globulus on various soil physical properties such as soil texture, bulk density, porosity, and water holding capacity. Additionally, the study assessed the influence of Eucalyptus globulus on soil fertility indicators including nutrient availability, organic matter content, pH levels, and microbial activity. Through field observation and laboratory analysis, various soil parameters were assessed. An explanatory quantitative case study and single case study research design was utilized. Purposive sampling technique was used to select respondents for data collection out of 1596 population. Primary and secondary data were used in this study and the primary data were collected from farmers of the study area through questionnaire, interview and physical observation and secondary data from agricultural office. Interview was conducted with officials and experts and questionnaires were filled by farmers of the study area and secondary data were used. The positive result suggests that Eucalyptus plantations have a beneficial effect on soil properties. The findings indicate that these plantations improved soil organic matter content. Additionally, they enhance water retention capacity, which is crucial for sustainable agricultural practices. These positive outcomes provide evidence-based recommendations for the establishment and management of Eucalyptus plantations in the study area, promoting their potential as a sustainable land use option. However, the negative result highlights the potential drawbacks of Eucalyptus plantations on soil properties. The study reveals that these plantations can lead to soil compaction, increased acidity, reduced nutrient availability, and decreased biodiversity. These findings call for caution in the establishment and management of Eucalyptus plantations in the study area, emphasizing the need for appropriate mitigation measures to minimize their adverse impacts , for example implementing appropriate management methods. Overall, this study provides valuable insights into the effects of Eucalyptus plantations on soil physical and chemical properties. The results contribute to a better understanding of the potential benefits and drawbacks of these plantations, enabling informed decision-making for sustainable land management practices in the study area.