The USGA supported a research project at Texas A&M University to evaluate Airfield Systems as an alternative to the USGA method for putting green construction. The Airfield green would provide an economic alternative where the cost of gravel or transportation costs to haul gravel are prohibitive. The Airfield design utilizes a highly porous, one-inch grid in place of a four-inch deep gravel layer. The Airfield System has been used successfully on several football, soccer, and baseball fields in the United States.
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