Parking Brake

A foot-peddle on a tractor, ride-on mower or other ride-on equipment, which is depressed and then typically a parking knob or lever is turned or pulled up to the letter P (to park), so as to lock the brake in place. To unlock the parking brake, depress it first and whilst depressed the lever/knob is typically turned in the opposite direction to lock or pushed down to unlock.

  Patching

The repair of a worn or damaged area of sward, typically by cutting out the area using a turf doctor to remove a square or hexagonal piece of turf. A new piece of turf will have been cut using the same equipment and this can then be neatly inserted into the extracted piece of damaged or worn turf. This procedure can be ideal for small areas, but where the area is extensive then returfing may be required, however, this will assume the time of year is suitable, the area can be rested to allow adequate establishment and that adequate resources are available.

  Planing

A severe form of fraise activity which involves the complete stripping of a surface layer of all vegetation. See Fraise Planing.

  Plugging [1]

The use of small pieces of turf (about 25mm to 50mm in diameter) which are planted may be 100mm to 150mm apart. The area between the plugs is gradually colonised by the creeping nature of the plant, which will be by rhizomes or stolons.

  Plugging [2]

Replacing a small damaged area of turf with a newly cut piece, so as to 'plug' the area.

  Poling

An American term for Switching of a fine turf surface.

  Popping

An informal term which is sometimes used in conversations when referring to seed which has recently germinated, for example, "The seed is popping quite well".

  Pot Seeding

The overseeding over a fine turf surface after it has been aerated with closely spaced solid tines, typically having a diameter of 8mm to 12mm.

  Power Brushing

A mechanically powered brush which operates its brush in a contra-rotating action, thus throwing material forwards rather than backwards towards the machine. A power brush can be used to disturb a surface infill in an artificial carpet and eject it onto a sieve plate. Sand, or rubber crumb, will be returned to the surface, whilst some contaminants will be removed as they are collected in the sieve. Power brushing will break up, depending upon the depth used, any capping or surface compaction which may have formed and will return fibres to a more upright position.

  Power Harrow [1]

A tractor operated, PTO driven, item of equipment which has tines penetrating into a soil and which agitate the soil to break it up and cultivate it. A power harrow may also typically have disc blades, or a dimpled roller implement attached to help create a finer tilth. A power harrow will typically be used after ploughing or subsoiling as a form of secondary cultivation.