To divide an area into smaller transforms of size by converting variants, depending on the size of the area and the terrain in order to get a sample of soil that is representative of all areas.
To divide the area into small plots. The size of the plot depends on the size and topography. To get a sample that is representative of the whole area.
To divide the area into the plots. By the size of the plots, depending on the size of the area and topography. To get the soil sample representative of all the areas.