The Problem: After years of use and of aeration, natural-soil athletic fields develop a hard layer of soil about 6” below the surface. This layer, called the plow layer, impedes the natural upward and downward flow of water in the soil. Plants are harmed when water can’t flow both ways.
The traditional way to reduce/remove the plow layer was to drag a chisel plow through an athletic field’s top surface and plow layer. Disturbing the surface, however, necessitated that the field be rebuilt, taking it out of service for an extended period and creating significant cost.
The Solution: This challenge was conquered by implementing a method of fracturing the hard layer of soil from below (max. depth was 72”). Grove devised a way of discharging high-pressure air at a depth of 24”- 36” under the surface, which broke the plow layer but did not distort a field’s graded surface.
Grove’s procedure allowed water to penetrate downward without disturbing the surface of an athletic field. Significant savings resulted from not having to rebuild fields.