Dry lawn is unsightly and in times of highly developed gels preventable easily . There is heavy machinery that works immense acreage with many spoons and there is the VOGT Fluid Injector for  the renovation of small and middle sized areas. It injects gels, liquid fertiliser and suspensions mixed with air into the proper depth. That regulates the water storage capacity - dry patches recover. Simultanious soil aeration in goal areas of sports grounds results in strong growing lawn. Overshooting is prevented by non return valves in the spoons.
The VFI supply is provided by a vehicle. Alternatively it works independently with a backpack reservoir.