Özet:

Objective: This study was under taken to determine the effects of nitrogen fixing and phosphate solubilizing bacteria on plant development, number of bulb and quality of bulb of some tulipcultivars. Materials and Methods: The research was conducted in open field conditions, in 2013. Pink Impression, Blue Aimable and Golden Parade varieties of Tulipa gesneriana L. were used as plant materials. Tulip bulbs were inoculated by four different bacterial formulations comprising Pantoea agglomerans RK-79, Pantoea agglomerans RK-92, Bacillus megaterium TV-91C, Bacillus subtilis TV-17C, Bacillus megaterium TV-3D, Paenibacillus polymyxa TV-12E, Bacillus megaterium TV-6D, Pseudomonas putida TV-42A bacteria strains. Results: According to research results, significant results were determined based on among the applications and varieties. According to applications, average maximum number mother bulbs was obtained from cultivar of Golden Parade while average maximum number bulblet was observed in Blue Aimable cultivar. The highest average maximum bulbet was obtained from formulation C application in Blue Aimable cultivar. Conclusion: As a result of the study, it has been concluded that the bacterial formulation applications especially formulation C (RK-79 + RK-92 + TV-3D + TV-12E) application increased inthe number of bulbs and quality of the cultivars.

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