Improved Phosphorus (P) Uptake and Yield of Rainfed Wheat Fed with P Fertilizer by Drought-Tolerant Phosphate-Solubilizing Fluorescent Pseudomonads Strains: a Field Study in Drylands

摘要: Application of phosphate-solubilizing bacteria (PSB) to improve phosphorus (P) nutrition plants under conditions P deficit in soil has been frequently studied controlled conditions. However, little research attention paid studying the combined effects PSB and fertilizer on improving uptake yield rainfed wheat plant natural arid semi-arid regions including drylands. Field experiments were arranged a randomized complete block design with 3 × 4 × 2 × 2 factorial arrangement treatments three replications during years 2017–2018 (Y1) 2018–2019 (Y2) (at four fields) at two various locations (Qazvin Zanjan). Experimental included factor levels: no (P0), triple superphosphate (TSP) 10 kg ha−1 (P10), TSP 20 kg (P20) variants factor: inoculation (B0), Pseudomonas baetica B21 (B1), helmanticensis B30 (B2), co-inoculation (B3). The results this study showed that growth indices dryland fields affected by time location planting. application single bacterial strains had significant (p ≤ 0.05) impact reduced electrolyte leakage. effect increased relative water content, chlorophyll index, proline height, shoot dry weight, thousand grain concentration P. As result, 63, 43, 52, 58%, respectively. pattern these fluctuations differed different locations. enhancement biomass parameters combination strongly supports use as biofertilizer for farming systems. also highlight importance simultaneous introduction phosphate performance drought stress.