Determination of a Basis for Design of a Yam (Dioscorea Spp.) Minisett Sorter
It has been experimentally demonstrated that the practice of planting a mixture of yam minisetts cut from the head, middle and tail portions of the tuber results in non-uniformity in sprouting and widely different germination rates and tuber yields. This problem could be overcomed by separating the minisetts into groups from the head, middle and tail portions of the parent tubbers and planting them separately. Manual separation is both tedious and expensive, so the work reported here was done to determine a suitable basis for the design of a mechanical minisett sorter. Results from this study showed that the minisetts cut from the regions of the parent tuber can be separated on the basis of characteristic dimensions of arc length or radius. This may provide a suitable basis for designing a mechanical sorter for yam minisetts.