Data for: Inorganic versus organic phosphorus mobilization shapes the arbuscular mycorrhizal legacy on Fe-oxide surfaces

This dataset contains the physicochemical measurements of goethite recovered from mineral bags in a 90-mesocosm pot experiment with Sorghum bicolor. Mineral bags containing goethite (unloaded, or loaded with orthophosphate [GOE-OP] or phytate [GOE-PA]) were buried for 12 weeks in mesocosms inoculated with one of nine arbuscular mycorrhizal fungal (AMF) strains or left non-mycorrhizal (AM0). Upon harvest, recovered mineral bags were analyzed for five surface-legacy descriptors: bulk organic carbon and nitrogen content, glomalin-related soil protein (GRSP), contact angle (wettability), zeta potential (surface charge), and effective hydrodynamic diameter (particle aggregation). Plant shoot and root phosphorus content are also reported. The dataset includes per-mesocosm values for all measured variables together with treatment metadata (AMF strain, P source, replicate), plus nine baseline (t0, pre-exposure) mineral bag characterizations per P source, used as a reference state prior to mesocosm incubation.