The Effects of Bacillus cereus, Pseudomonas putida and Mycorrhiza Applications on Root Growth of Softwood Rose Cuttings

Growth regulators such as Indole-3-Butyric Acid (IBA) are generally used to promote root formation of rose cuttings. However, today, within the scope of sustainable agricultural practices, research studies of new materials and methods alternative to synthetic chemicals in the plant production process are gaining momentum. At the beginning of such alternative applications are plant growth-promoting rhizobacteria (PGPR) and mycorrhizal fungi, which are increasingly used today, promoting plant growth. In this study, Bacillus cereus (ZE-7), Pseudomonas putida (ZE-12) rhizobacteria and mycorrhiza (6000 ppm) were applied to 12-15 cm long softwood rose cuttings. The softwood cuttings were kept in the mycorrhiza suspension for 10 seconds and in the rhizobacteria suspension for 30 minutes and then planted in the rooting medium. In the study, in order to determine the effects of applications on steel root development; rooting rate (%), callus rate (%), decay rate (%), root number (number) and root length (cm) parameters were examined. In the results of working; the highest rooting rate (19.44%), the highest callus rate (38.89%) and the highest number of roots (8.64 units) were obtained in ZE-12 treated cuttings. In particular, rhizobacteria application showed a high effect on reducing the rate of decay in steels. The lowest decay rate in the steels was obtained from the ZE-7 bacterial strain application (8.33%) compared to the control (38.89%). As a result, it was concluded that mycorrhiza and rhizobacteria applications can be applied to rose cuttings and these applications as an alternative to IBA in rooting.