Akife Dalda-Sekerci, Emel Unlu
Full Text PDF |
Bacillus, Biostimulants, Pseudomonas, PGPR
Green Bean is an important floriculture plant worldwide. This study was conducted to investigate the effects of seed-inoculated PGPR (Plant Growth-Promoting Rhizobacteria) applications on the growth of common bean (Phaseolus vulgaris L.). The experiment was carried out under unheated greenhouse conditions using a commercial NPK fertilizer (18:18:18) and five different PGPR isolates: Bacillus megaterium U2-1, Pseudomonas putida 9-4-2, Bacillus thuringiensis 2B-2-2, Bacillus spp. 2B-3-1, and Bacillus pumilus EU-20. The bacterial treatments were applied by soaking the seeds for one minute in bacterial suspensions at a concentration of 1×10³ cfu; the control group was treated with sterile distilled water under the same conditions. Observations were conducted until the beginning of the flowering stage to evaluate the effects of PGPR on plant development. The results revealed that bacterial applications significantly enhanced plant height, stem diameter, fresh and dry plant weight, root fresh and dry weight, root length, leaf area, and leaf number compared to the control. Overall, the effects of different rhizobacterial isolates on growth parameters were found to be comparable to those of commercial fertilizer applications. These findings highlight the potential of PGPR formulations as promising biostimulants agents in vegetable production and their role in promoting sustainable and environmentally friendly cultivation practices.
Cite this paper: Dalda-Sekerci, A., Unlu, E. (2025). EVALUATION OF PGPR ISOLATES AS BIOSTIMULANTS FOR ENHANCING GROWTH IN COMMON BEAN (Phaseolus vulgaris L.). Current Trends in Natural Sciences, 14(27), 117-125. https://doi.org/10.47068/ctns.2025.v14i27.014
