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. 2021 Sep 14;10(9):1901. doi: 10.3390/plants10091901

Figure 4.

Figure 4

Analysis of changes in soil physicochemical properties and acidity by elemental sulfur and sulfur-oxidizing bacteria; (a) Change in soil acidity (pH) as affected by elemental sulfur (ES) and sulfur-oxidizing bacteria treatments; (b) variation to the content of NH4-N, NO3-N, and P by elemental sulfur and sulfur-oxidizing bacteria treatments. ** indicates a significant difference at p < 0.01.