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Bar graphs illuminating crop traits (A–D). Soil enzyme activities: (E–H), followed by soil TN, total nitrogen (I); soil NH4 +-N, ammonium (J); NO3 −-N, nitrate (K); and pH, potential hydrogen (L). Graph with asterisk mark depicts significant differences between treatments, while “ns” stands for not significant (Tukey test, p < 0.05).
