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Effect of the microbial inoculants on plant internal P use efficiency (IPUE). Stacked bars (green and yellow) represent the partition of the average IPUE at stover (culm and cobs) and grain level. Each bar represents the mean of 3 sampling plots ± SD (n = 3). Different letters show significance at 5% level (for total IPUE), according to Tuckey’s HSD test.
