| Abstract: | Abstract Five pedons from a 200 hectare area were sampled to study the effect of the soil sample volume on determination of salinity. Four sample sizes, 5, 50, 500 and 5000 g, were used, with five to ten replicates each, for the top 25 cm of the profiles. These samples were prepared and analyzed for soil salinity, soluble cations and anions in 1: 2 (soil: water) extracts. Data revealed that the variations due to the different sample sizes were highly significant. Highest values of EC, cations and anions were obtained when using 5‐g samples. The confidence intervals tended to be lowest for the 5000‐g samples in most of the EC, cation and anion determinations. The 500‐g sample size was awkward and apparently the 5‐g sample size was too small. |
