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Soil testing is not typically conducted in extensive and low input rangelands systems. To assess the usefulness of quantifying soil properties, we benchmarked selected soil physicochemical properties with producers from 33 properties in the semi-arid rangelands of NSW, Australia. Producers selected sampling locations of different soil types and landscape positions to compare attributes of the upper rootzone (10 cm increments to 30 cm) for pH, salinity, exchangeable cations, sulphur (S), phosphorus (P), and soil organic carbon (SOC). Laboratory analyses typically showed an increasing soil pH with depth to alkaline levels on alluvial soils. The pH of non-alluvial soils (aeolian and bedrock-derived soils) was evenly distributed from moderately acidic to moderately alkaline, though some areas were identified with acidity constraints. Soil salinity was generally low, but some targeted sites had soil salinity levels comparable to sea water. Sodic soils were found in many areas. Low SOC was associated with high salinity and sodicity. Soil P was high in some areas, particularly the alkaline alluvial soils, though on some non-alluvial soils P was low enough to limit livestock productivity. Benchmarking soil properties proved a strategic tool for rangeland producers to identify constraints not previously quantified and assess management options. Some targeted ameliorants or supplements may lead to improved productivity and returns on investment. The results provide a basis for further investigation to address any constraints and variable productivity.