Up to 4 SP roots per genotype were peeled, cut longitudinal, sliced and grinded. One spectral was taken per grated sample. Procedures for sampling and sample preparation NIRS measurement on raw FRESH GROUND sweet potato, SP root samples harvested in 2 locations in Uganda at 11/2019 (60 genotypes). NIR instrument used was Foss XDS, serial number 30101714, and analysis 60 spectra (1 representing 1 genotype).