Attraxor

A product name for a plant growth regulator which contains the active ingredient Prohexadione (10% w/w), being a water dispersible granule. It is manufactured by BASF.

  Holdfast

A product name for a former growth retardant or regulator chemical (produced by ICI at the time) for use on grassed areas, which contained paclobutrazol. It is no longer approved for use in the UK.

  Maintain NT

A product name for a growth regulator containing Trinexapac-ethyl (120g/ltr) as the active ingredient. The application rate is 0.4-3.2 litres of concentrate per hectare, being applied in 300-500 litres of water. It is supplied by Cheminova A/S.

  Maleic Hydrazide

A plant growth regulator, which was previously used in some turfgrass situations, however, it is no longer approved for such use. An initial application was given when growth commenced in say April and would be reapplied when growth recommenced once the effects of the chemical had worn off or been significantly reduced.

  Mazide

A product name for a former growth retardant chemical for use on grassed areas, which contained maleic hydrazide. It is no longer approved for use in the UK.

  Mefluidide

A Plant Growth Regulator, which was especially used for Poa annua seedhead control, in the 1980s until 2009 (?) when it was no longer approved for use. One product this was marketed as was Embark®.

  Mowchem

A product name for a former growth retardant / regulator chemical (produced by Rhone-Poulenc) for use on grassed areas, which contained mefluidide. It is no longer approved for use in the UK.

  Paclobutrazol

A Plant Growth Regulator introduced in the 1980s, and which is absorbed through plant roots, with its mode of action being an early gibberellic acid inhibitor. One product this was marketed as was Trimmit.

  Primo Maxx II

A Plant Growth Regulator which contains 116.4g/l of trinexapac-ethyl as the active ingredient. Its use can increase root development and sward density as growth is redirected away from significant upward leaf growth. Another use of this product is in the suppression of annual meadow grass flowering. It is manufactured by Syngenta.

  Pure Max

A Plant Growth Regulator which contains trinexapac-ethyl as the active ingredient. Its use can increase root development and sward density as growth is redirected away from significant upward leaf growth. Another use of this product is in the suppression of annual meadow grass flowering. It has typical application rates from 0.4-2.4 (with a maximum rate of 3.2) litres of concentrate per hectare, with low rates for use on fine turf bowling and golf greens, to higher rates on perennial ryegrass dominated sports pitches.