Increase in the number of articles using amplicon sequencing in soil microbiome research published in soil science journals (as defined in Web of Science, www.webofknowledge.com). Bars represent the total number of articles using amplicon sequencing, whereas the blue points and line represent their percentage of the total number of articles published in those journals per year from 1990 to 2020. The pie chart represents the number of articles in the top ten contributing soil science journals in 2020 (as total number of articles). Numbers inside the chart represent the number of articles using amplicon sequencing (only reported for the top three journals), while the numbers outside the chart represent the percentage of the total number of articles for each journal. See Supplementary file for a more detailed description of methods and the complete list of journals (Table S2).