Effect of Phosphate solubilizing Fluorescent Pseudomonad and phosphorus fertilizer on growth and nutrient uptake of Sesame

Phosphate solubilizing bacteria are a group of plant growth promoting rhizobacteria (PGPR) that increase growth and yield of plant by enhancing insoluble phosphates. In this study, a greenhouse experiment was carried out to investigate the effect of Phosphate solubilizing bacteria and phosphorous fertilizer on the yield and chemical components of Sesame. This experiment was conducted in factorial based on completely randomized design with three replications including five Levels of phosphorous fertilizer (0, 100, 200 and 400 kg/Ha of triple superphosphate and 1200 kg/Ha of phosphate rock) and three bacterial levels (inoculation with two Phosphate solubilizing Fluorescent Pseudomonad, B1 and B2 and non-inoculated). Results showed that inoculation of Sesame with B1 and B2 isolates significantly increased the dry weight, Index, chlorophyll and uptake of P, Fe, Zn, Cu and Mn in comparison to the control. Also fertilizer application significantly increased dry weight, Index of chlorophyll, P uptake and some of nutrient elements. Results was also indicated that application of 100 kg/ha triple superphosphate along with the B2 isolate were significantly increased nutrient uptake parameters in the sesame plant. Hence it may decrease phosphorus fertilizer consumption and subsequently the pollution due to the high levels of fertilizer application.