Soil analysis for small-scale farms in developing countries is often inconvenient and prohibitively expensive, yet the information gained from these soil tests could result in significant benefits. The pressurized hot water (PHW) extraction coupled with colorimetric or turbidimetric analysis is promising as a viable alternative based on tests done on a limited range of soils in Guatemala and Morocco. Before this extraction and analysis can be used in developing countries, testing is needed across the range of soils found in these countries. Thirty local farm sites in two unique regions of Guatemala were used to study the relationship between yield of maize (Zea mays L.) and PHW extractable soil nitrate, phosphorus and potassium. Since fertilizers were placed near the plants, soil samples were taken shortly after plant establishment both between rows and within rows (next to the plants). Cultivars, plant populations and other management varied widely among locations (based on farmer practices) and yields obtained varied from 1.1 to 12.2 t/ha. The only significant correlations with yield were obtained with in row K (r=0.47, p=0.013) and between row N (r=0.33, p=0.099). Neither in row nor between row P produced a significant correlation with yield. The correlations between soil nitrate, phosphorus and potassium and respective leaf nutrient N, P and K content were not significant. Controlled incubation, greenhouse and field experiments with variable rates of P and K are currently underway in Guatemala to further evaluate PHW extraction as a viable soil test in small-scale farming systems.