The pictures from this field show the benefits of better infiltration where PRO CAL 40 has been applied.  This field received about .5 inches of rain.  Water is draining out ot the field in the untreated part of the field.  Where the PRO CAL 40 was applied there was no water draining from the lower areas.  There was no water standing on that part of the field.  This soil is a heavy clay soil (CEC = 22) with a magnesium level around 25%.