Isolation and identification of some species of plant growth promoting Rhizobacteria (PGPR)‎ from some Bio-fertilizers

الملخص EN

This study was conducted to isolate and identify some species of Plant Growth Promoting Rhizobacteria (PGPR) form three biofertilizers; Rhizobacterin, Phosphorine and Potassiomag.

Specific bacterial media were used for Isolation and identification of bacterial species.

The isolates were identified according to its cultural and morphological characteristics, gram staining, microscopy examination, motility and biochemical characteristics.

The results showed that the isolates which identified from Rhizobacterin were nitrogen-fixing bacteria Azotobacter chroococcum (NFBac).

We also isolated and identified two other isolates; phosphate mobilizing bacteria Pseudomonas fluorescens (PSBpf) and Potas solubilizing bacteria Bacillus circulans (KSBbc) from commercial complex Phosphorine and Potassiomag, Respectively