CPM : Critical Path Method.

  CQFW : Credit and Qualifications Framework for Wales.

  CRD : Chemicals Regulation Division (of the HSE).

  CRF : Controlled Release Fertiliser.

  CSC : Critical Success Criteria.

  CSF : Critical Success Factor.

  CSR : Corporate Social Responsibility.

  CV [1] : Curriculum Vitae.

  cv [2] : Term for a plant cultivar (with the initials all being lower case).

  CWIN : Cold Water Insoluble Nitrogen.

  CWSN : Cold Water Soluble Nitrogen.

  DAERA : Department of Agriculture, Environment and Rural Affairs, in Northern Ireland.

  DCD : Dicyandiamide, a nitrification inhibitor which slows the release of the Nitrogen fertiliser.

  DDAC : DiDecyldimethylAmmonium Chloride (a biocidal active ingredient).

  DE : Diatomaceous Earth.

  DEFRA : Department for Environment Food & Rural Affairs.

  DEL : Directly Employed Labour.

  DERV : Diesel-Engined Road Vehicle fuel.

  DFF : Diflufenican.

  DLI : Daily Light Integral.