Quantification of aboveground and belowground biomass and associated organic carbon in two olive cultivars (Arbosana and Picual) grown at high density

[Description of methods used for collection/generation of data] In this study, two methodologies (destructive and non-destructive) were developed and tested to quantify aboveground and belowground biomass, and their carbon content, in 7.5-year-old trees of two widely cultivated olive cultivars (Arbosana and Picual), at field and under Mediterranean climate conditions.