Even following the protocol recommended by the method of analysis, variations in analytical results can be caused by the way samples, or the kind of materials used in the analysis, are handled. The objective of this study was to evaluate the influence of soil particle size, the type of extraction container, and the container void volume on soil P content extracted by Mehlich-1 and Mehlich-3. In the first experiment, soil samples were ground to pass through sieves with 2.000, 1.700, […]