TOMATO SEEDLING PRODUCTION USING AN INOCULUM PREPARED WITH PLANT GROWTH-PROMOTING RHIZOBACTERIA (PGPR) ISOLATES

A study to attain healthy tomato (Lycopersicon esculentum Mill) seedlings through environment-friendly natural biological products took place from January March 2022. Determining the effects of inoculum prepared five plant growth-promoting rhizobacteria (PGPR) isolates, i.e., Pseudomonas fluorescens, putida, Lysinibacillus fusiformis, Enterobacter cloacae, and Kineococcus radiotolerans on production seedlings, experiments proceeded at Soil Microbiology Laboratory, Department Science Water Resources, College Agriculture, Tikrit University, Iraq. The isolates underwent screening for their efficiency as a biostimulant dissolve insoluble phosphate compounds produce indole acetic acid (IAA) chelating compounds. results showed ability all IAA, compounds, solubility phosphates. P. fluorescens isolate superior in its solubilization IAA (41.30 mg p-1, 13.00 ml-1), followed by E. L. K. radiotolerans, respectively, with medium also superiority inoculated treatments over non-inoculated percentage speed germination, length shoot dry weight, number leaves per plant, root weight parts. displayed significant studied traits, radiotolerans.