PE : Polyethylene.

  PERT : Program (sometimes referred to as Project) Evaluation and Review Technique.

  PEST [2] : Political, Economic, Social-cultural (or Sociological) , and Technological.

  PESTLE : Political, Economic, Social-cultural (or Social or Sociological), Technological, Legal and Environmental.

  PET : Polyethylene terephthalate.

  PGF : Pitch Grading Framework.

  PGPR : Plant Growth Promoting Rhizobacteria.

  PGR : Plant Growth Regulator.

  pH [1] : Potential or power of Hydrogen.

  PHA : Polyhydroxyalkanoate, a biodegradable plastic.

  PIP : Pitch Improvement Programme, an FA initiative.

  PLA : Polyactic Acid, a bioplastic.

  PMA : Phenyl Mercury Acetate.

  PP [1] : Polypropylene.

  PP [2] : PhenylPyrroles, a fungicide group.

  PPDAC : Problem, Planning, Data, Analysis, Conclusion.

  PPE : Personal Protective Equipment at Work Regulations 1992.

  PPM [1] : Parts Per Million.

  PPM [2] : Playing Pitch Model.

  PPN : Plant-Parasitic Nematodes.