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Leaf concentrations of nitrogen (a) and phosphorus (b) of cowpea plants irrigated with saline water and inoculated with dark septate endophytic fungi. NI = without inoculation; 21W2 = roots inoculated with strain 21W2; and B’2 = roots inoculated with strain B’2. *significant differences by Tukey’s test (p < 0.05). n = 5
