Evaluation of Phosphate-Solubilizing Bacteria (PSB) on Phosphorus Availability in Agricultural Soils and the Growth of Wheat ( Triticum aestivum L.)

Renzo Enriquez-León (), Jeffrey De la Cruz-Mantilla and German Luis Huerta-Chombo
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Renzo Enriquez-León: Escuela de Ingeniería Ambiental, Facultad de Ingeniería, Universidad César Vallejo, Trujillo 13007, Peru
Jeffrey De la Cruz-Mantilla: Escuela de Ingeniería Ambiental, Facultad de Ingeniería, Universidad César Vallejo, Trujillo 13007, Peru
German Luis Huerta-Chombo: Escuela de Ingeniería Ambiental, Facultad de Ingeniería, Universidad César Vallejo, Trujillo 13007, Peru

Sustainability, 2025, vol. 17, issue 10, 1-21

Abstract: The objective of this research was to determine the effect of phosphate-solubilizing bacteria (PSB) on phosphorus availability in agricultural soils and the growth of wheat ( Triticum aestivum L.). This applied research considered PSB and phosphorus availability in the soil as variables. An experimental design was employed, comprising four groups of pots containing 1 kg of wheat-cultivated soil (no inoculum, 5% inoculum, 10% inoculum, and 15% inoculum), with three replicates each, using a bacterial suspension of 3 × 10 8 CFU/mL. Wheat seedling development parameters were evaluated on days 29 and 45, and soil phosphorus availability was assessed on day 45. The 10% inoculum treatment yielded superior results in seedling development: plant height, aerial dry biomass, and root dry biomass showed highly significant differences ( p < 0.0001). A 10% PSB dose improved soil phosphorus availability from 72.77 ± 0.13 ppm to 96.68 ± 0.58 ppm compared to the control. These findings highlight PSB as a sustainable alternative for enhancing agricultural productivity, thereby reducing dependence on chemical fertilizers.

Keywords: phosphate-solubilizing bacteria; isolation; wheat cultivation; available phosphorus; inoculum (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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