Management, yield, soil and vegetation data for oil palm smallholder farms in Sabah, Malaysian Borneo, 2019 - Gutierrez Al-Khudhairy, S.Y.; Howells, T.R.; Bin Sailim, A.; McClean, C.J.; Senior, M.J.M.; Benedick, S.; Hill, J.K.; Azmi, R. (NERC EDS Environmental Information Data Centre, 2022)