04023506 is referenced by 60 patents and cites 12 patents.

A system and process is disclosed for providing a durability enhanced area that is particularly well suited for use as an athletic playing field. A vegetative crop has one or more layers of netting associated therewith so that each layer of netting has portions of the vegetative crop extending therethrough. With grass utilized as the vegetative crop and the growing points of the grass within a rooting medium, the blades of the grass extend upwardly through a top layer of netting contiguous to and above the rooting medium to protect the growing points of the grass and to prevent excessive divoting when the area is used as an athletic playing field. A second layer of netting is positioned below the rooting medium so that the roots of the grass extend therethrough to give the turf the support strength that is particularly required where the area is used as an athletic playing field for playing a game such as football. Additional layers of netting may be utilized where needed or desired. The system is particularly suitable for use with a planted surface having an underground conditioning system, and may also be utilized to replace or repair selected portions of an area.

Title
System and process for providing durability enhanced area
Application Number
5/664865
Publication Number
4023506
Application Date
March 8, 1976
Publication Date
May 17, 1977
Inventor
Melvin J Robey
West Lafayette
IN, US
Agent
John R Nesbitt
Assignee
Purdue Research Foundation
IN, US
IPC
A01G 7/00
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