The research aimed to identify the personal characteristics of extension personnel ‚ to identify the constrains faced the respondents that limit the use of bio-fertilizers ‚ the study also targeted to identify the attitudes of them towards the importance of using bio-fertilizers ‚ this research aimed also to determine the relationship between the independent studies variables and degree of respondent's attitude towards importance of using bio-fertilizers , finally research determine the percentage of  the contribution of those variables that have significant relation in total interpretation of respondent's attitude variance towards importance of using bio-fertilizers