THE EFFECTS OF RHIZOBACTERIA AND CHEMICAL FERTILIZERS ON THE DEVELOPMENT OF Cyclamen persicum

The aim of this study is to determine the effects of the plant growth promoting Rhizobacteria (PGPR), chemical fertilizers and their combinations on the development of Cyclamen persicum plant species, which has high economic value among ornamental plants by applying the mentioned materials individually and in combination. It was found in the study when plant development was considered during the study period that the longest blooming period (when flowers are on the plant) was 176.67 days with F1CF (Pseudomonas fluorescens RK-1979+Bacillus subtilis RK-1977+Rhodococcus erythropolis RK-1978,50% reduced chemical fertilizer) followed by 169.67 days with F2CF (Bacillus megaterium RK504+Pantom agglomerans RK-79+Bacillus subtilis RK-1984,- 50% reduced chemical fertilizer), 161.33 days with F6CF (Pantoea agglomerans RK-79+Pantoea agglomerans RK-92+Psettdotnonas fluorescens RK-1105+50% reduced chemical fertilizer); the earliest flowering time (when the flowers blossom first) was 75 days with F6CF, the latest flowering time was 96.67 days with F1 (Pseudotnonas fluorescens RK-1979+Bacillus subtilis RK 1977+Rhodococcus erythropolis RK-1978) applications. The largest plant height. the longest flower stalk formation, the largest leaf width and the largest tuber size were determined in F4CF (Paenibacillus polymixa RK-1981+Achromobacter xylosoxidans RK-1982+Pseudomonas puticia RK-1983+ 507% reduced chemical fertilizer) application. The largest number of flowers and flower stalk thickness were obtained in the application of F6CF. Largest plant crown width was obtained by F5CF (Brevibacillus brevis RK-1130+Bacillus megaterium RK-491J-Bacillus megaterium RK-716+50% reduced chemical fertilizer) application. It was determined as the result of the study that the use of chemical fertilizer may be reduced by using PGPR and plant growth promoting Rhizobactcria has favourable effects on development and quality parameters. Especially F4CF and F6CF applications were found to contribute significantly to the growth of Cyclamen persicum plant species.