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. 2007 Aug 8;104(33):13268–13272. doi: 10.1073/pnas.0611508104

Fig. 4.

Fig. 4.

Box-and-whiskers plot showing the range of reported decreases in erosion rate for studies reporting direct comparisons of conventional tillage and no-till practices for comparable settings (n = 39, median = 20, mean = 488, minimum = 2.5, maximum = 7,620). Data include studies that reported both rates individually and those that simply reported a ratio between erosion rates under conventional or no-till cultivation.