Phosphate solubilizing rhizobacteria inoculation to increase rock phosphates efficiency and improve maize growth

Rock phosphates are less soluble and agronomically not as efficient the acidulated. However, some rhizobacteria can improve solubilization of inorganic in soil, raising efficiency rock phosphates. The objective was to evaluate development maize plants response application P sources associated with inoculation. A greenhouse experiment carried out six sources: no application; ​​Triple Superphosphate (TSPh); Gafsa phosphate (reactive); Itafós (non-reactive); TSPh + Gafsa; Itafós, three inoculation forms: inoculation, Burkholderia pickettii GN 2214 Pseudomonas sp. fluorescens group P21. Plant height, stem diameter, leaf area, shoot dry weight (ShDW), root (RDW), total weight, cumulative content ShDW, RDW/ShDW ratio relative agronomic were assessed. Agronomic growth TSPh-treated better than those treated association increases plant more isolated sources. Inoculation P. strain P21, improved performance fertilized phosphate, but had effect when phosphate. Together TSPh, intensified growth, indicating potential increase well.