Fig. 6.

Heatmap of the Pearson correlation coefficients obtained from variables analyzed in corn with A. brasilense and B. subtilis inoculation in response to N rates with (60 to 240 kg N ha⁻¹) (A) and without N application (B). *Indicates significant correlation (p < 0.05); shoot biomass = SBM, root biomass = RBM, N shoot accumulation at flowering = NFL, leaf chlorophyll index = LCI, net photosynthetic rate = A, stomatal conductance = GS, internal CO₂ concentration in the substomatal chamber = CI, transpiration = E, H₂O₂ = H₂O₂, malondialdehyde = MDA, leaf soluble proteins = PRO, straw production = STR, grain yield = GY, physiological efficiency = PE, N use efficiency = NUE, apparent fertilizer recovery = AFR