Bar Plot from Scientific Research

Hyphal length density (A) and nosZ -type gene copies (B) in long-term field soils of faba bean monoculture and maize/faba bean intercropping under different phosphate fertilizer application rates (n = 3). Asterisks, significant differences between monoculture and intercropping within each P application rate according to the two-tailed unpaired t test (*, P < 0.05; **, P < 0.01).

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