Determination of the effects of nitrogen-fixing and phosphate-solubilizing bacterial combinations which promotes plant growth in the vegetative development characteristics of pear shoots

It was aimed to determine the effects of Y4 (Pseudomonas putida btyp B, Pseudomonas agarici 62/5 + Bacillus atrophaeus AR-51 + Rhodococcus erythropolis AR-49), Y5 (Pseudomonas fluorescens 58/3 + Pseudomonas putida AR-93 + Bacillu spumilus AR-102 + Bacillus licheniformis AR-133) and Y6 (Pseudomonas fluorescens btyp A 48/3 + Bacillus licheniformis AR-121+Bacillus subtilis AR-134 + Bacillus subtilis AR-116) bacterial combinations which promoted plant growth in "Deveci" pear budded on BA 29 rootstock, to the vegetative growth criteria, leaf area, chlorophyll and plant nutrient content and density of the soil bacterial population at the Gedikhasanlı Research and Application Station in the Sorgun district of Yozgat province. As a result of the study, Y4, Y5 and Y6 bacterial applications were prominent in the growth of the stem diameter according to the control.The Y6 implementation provided the highest crown width (56,18 cm) in the 2nd year. The maximum annual shoot length was obtained from Y4 and Y6 applications in the 2nd year. In this study, it was determined that bacterial applications increased N, P and Mg contents of leaf macro nutrients, Mn and Zn contents of micronutrients, and increases in leaf area were also statistically significant. The isolate containing the densest bacterial colon in the plant rhizosphere was found to be Y6 with 6.02 x 106 cfu / ml.