Fig. 6.

Effects of size sorting, DropSorting, and size sorting followed by DropSorting on bulk kernel attributes of groundnut samples (n = 14) collected from open markets in Tanzania in 2019. a) Sorting method effects on 100 kernel weight, b) sorting method effects on kernel bulk density, c) sorting method effects on Ln (aflatoxins) in (ppb), the aflatoxin mean and median (shown in parentheses) of each fraction are presented on the boxplots, and d) rejection rates of sorting methods. L & H: large and heavy kernels, L & L: large and light kernels, S & H: small & heavy kernels, and S & L: small and light kernels. The letters on the boxplots represent results of Tukey's test (treatments with different letters are significantly different, ns: no significant difference between treatments at 95% level of confidence). Pairwise comparisons based on two tail t-test in Fig. 6c are presented with the symbols ns (no significant difference) and * (significant difference at 95% level of confidence).