Invasion and impacts of Xanthium strumarium in Borena Zone of Oromia Region, Ethiopia

摘要

Objective: To assess the impacts, mode of entry, trends, status, distribution and management practices of Xanthium strumarium (X. strumarium) in Borena Zone of Oromia Region. Methods: Four study districts and eight kebeles (peasant associations) were purposively selected based on distribution level and data from agricultural offices. Then, randomly, eight key informants were selected from each kebele. Data were collected using semi-structured interview and analyzed using SPSS version 21. Results: All respondents (100%) acknowledged that X. strumarium highly invaded the study area and its spread was increasing both in time and space. According to respondents, X. strumarium was introduced to the area mainly along with improved seed varieties, food aid, flood, animals and vehicles, and easily dispersed by clinging to animal hides and human clothing. In the past time, X. strumarium caused high level of damage on native biodiversity and thus respondents worried that this might continue in the future. Similarly, respondents (98.4%) stated that X. strumarium was out of control in the study area and they recommended further investigation by concerned body to control the spread. Conclusions: In conclusion, X. strumarium is spreading rapidly in the study area by threatening native biodiversity and adversely affecting agroeconomy of the farmers and the country. Therefore, it needs the effort of all concerned bodies to control the impacts.