Correction to: Journal of Natural Medicines (2020) 74:825–833 https://doi.org/10.1007/s11418-020-01413-w

In the original publication of the article, under the section “Analysis of chemical characteristics of soil” in the “Materials and methods”, the measurement modes of the anion and cation were listed in the wrong order. In the second line from the top of the left paragraph on p. 829, “Anions” should be “Cations”, and in the eighth line from the top of the same paragraph, “Cations” should be “Anions”.