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Acid phosphatase activity in the rhizosphere of soybean plants affected by inoculation of plant growth-promoting bacteria (PGPB) and arbuscular mycorrhiza fungi (AMF), with or without the addition of nitrogen (N), phosphorus (P), and potassium (K) fertilizers. Data (Mean ± SD) with different letters are significantly different (Tukey’s HSD, p < 0.001).
