The conduct of a field trial in the 2021–2022 cropping season assessed the economic feasibility and effect of using locally produced microbial biofertilizers on the growth and yield traits of wheat (Triticum aestivum L.). The manures of Providencia vermicola, Alcaligenes faecalis, and Raoultella planticola served as sample treatments in the study. The research was in a randomized complete block design at the Agricultural Experiment and Research Station (31°20′19″N 45°17′20″E), College of Agriculture, Al-Muthanna University, Iraq. Microbial fertilizers were the first factor, with the second factor comprising two levels of mineral fertilizers, i.e., a) no chemical fertilizer and b) using half of the recommended chemical fertilizer, addressing the interactions between biofertilizers and chemical fertilizers, having a two-factor experiment. Field results showed that triple biofertilization consisting of A. faecalis, R. planticola, and P. vermicola proved superior based on grain yield and biomass using half of the recommended fertilizer (P7) (8.038 t ha^-1 and 24.938 t ha^-1). In turn, the economic analysis results were consistent with the technical outcomes, as treatment P7 recorded the highest profit amounting to USD 483.625 ha^-1. In addition to recording the highest revenue per ha at the rate of 6.2477, treatment P7 for the level of fertilization F1 recorded the maximum level, amounting to about USD 144.284, 165,298.65, and 48,362.5 ha^-1 for the criteria of the invested USD return, productive profitability, and added value, respectively.

Keywords: Wheat (Triticum aestivum L.), Alcaligenes faecalis, Raoultella planticola, chemical fertilizers, growth and yield traits, economic return

Key findings: The results showed that the treatment P7 verified superior for biological and grain yield (24.938 Mg ha^-1 and 8.038 Mg ha^-1, respectively). In turn, the economic results were consistent with the technical outcomes, with the treatment P7 recorded with the highest profit, amounting to USD 7157.6486 ha^-1, aside from having the highest yield per ha at a rate of 9.2466 Mg ha^-1. The F1 enrichment provided the maximum level for other criteria, reaching about USD 31. 60406, 24,464.21, and 7157.649 per Ha^-1 for the investment return, productive profitability, and added value, respectively.