TERRAGEM – Soil Physicochemical Analysis Dataset

Dataset of 29 soil samples used as functional test cases for TERRAGEM, a Flutter mobile application that uses the Gemini AI API to generate agronomic diagnoses and fertilization recommendations. App repository: https://github.com/CarolayDS/TERRAGEM_APP Affiliation: Universidad Nacional de Cañete (UNDC), Lima, Peru Dataset Columns Column Description Unit Sample_ID Sample identifier — Textural_Class Full USDA textural class (Sandy Loam, Loam, Loamy Sand, Sandy Clay Loam, Silt Loam) — Soil_Type_App Simplified soil type for app selection (Loam / Sandy / Clay / Peat) — Sand_pct Sand content % Silt_pct Silt content % Clay_pct Clay content % CaCO3_pct Calcium carbonate % CE_dS_m Electrical conductivity dS/m pH Soil pH — Available_P_ppm Available phosphorus ppm Organic_Matter_pct Organic matter % Available_K_ppm Available potassium ppm Ca_meq Exchangeable calcium mEq/100g Mg_meq Exchangeable magnesium mEq/100g Na_meq Exchangeable sodium mEq/100g K_meq Exchangeable potassium mEq/100g Al_H_meq Exchangeable aluminum + hydrogen mEq/100g PAI_pct Aluminum saturation index % CICE_meq Effective cation exchange capacity mEq/100g Cu_ppm Available copper ppm Zn_ppm Available zinc ppm Mn_ppm Available manganese ppm Fe_ppm Available iron ppm B_ppm Available boron ppm pH_Level pH interpretation Acid / Neutral / Alkaline Salinity_Level Salinity level Normal / Slightly Saline / Saline Notes: N/A values in M-28 and M-29 indicate parameters not reported in the original lab analysis (special cases: calcareous and saline-sodic soils). CaCO3_pct shows