Comparative Assessment of Soil Organic Matter Determination Techniques in Semi-Arid Mediterranean Soils: LOI vs. Potassium Dichromate

This dataset supports the article entitled "Comparative Assessment of Soil Organic Matter Determination Techniques in Semi-Arid Mediterranean Soils: Loss on Ignition versus Potassium Dichromate Method", submitted to the journal *Catena*. The dataset includes raw and processed measurements of soil organic matter (SOM) using two laboratory methods: Loss on Ignition (LOI) and the Potassium Dichromate oxidation method. Samples were collected from semi-arid Mediterranean regions, and analyzed under controlled conditions. These data are shared to promote transparency, reproducibility, and comparative method evaluation in soil carbon studies.