Rate-Dependent Effects of Biochar on Soil Fertility and Bacterial-Fungal Communities in Maize Fields of the Black Soil Region: A Three-Year Field Study.

Linear mixed-model results ( Table 2 ) showed that biochar application rate had highly significant effects on organic matter, alkali-hydrolyzable nitrogen, available phosphorus, available potassium, total phosphorus, pH, and total nitrogen ( p < 0.001), whereas its effect on total potassium was not significant ( p = 0.734).

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Associations with raw p < 0.05 but FDR-adjusted p ≥ 0.05 were considered nominally significant before multiple-testing correction, but were not interpreted as statistically significant after FDR adjustment. 2.9.

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