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¹ Çanakkale Onsekiz Mart Üniversitesi, Ziraat Fakültesi, Tarla Bitkileri Bölümü, Çanakkale DOI : 10.21566/tarbitderg.280384 - The study was conducted to evaluate the effects of nitrogen and bacteria inoculation on common bean growing (Phaseolus vulgaris) under perlite culture conditions. Modified Hoagland solution was used as medium, nitrogen and Rhizobium tropici bacteria strain were used as variable on controlled environments. In the research 3 treatments and control were used, namely, nitrogen fertilizer, bacteria inoculation, nitrogen+bacteria effects and without N and bacteria is control. Sole bacteria treatment yielded 92.88 nodules whereas none of the other applications caused nodule formation. The highest number of seeds per pod was achieved in nitrogen+bacteria application. The group which was not applied fertilizer and bacteria had less bean and seed numbers. Keywords : Hydroponics, nodulation, legume, nitrogen fertilizer