{
  "url": "https://openlegislation.uk/eu-regulation-2003-2003/division-F.",
  "json_url": "https://openlegislation.uk/eu-regulation-2003-2003/division-F..json",
  "legislation": "eur/2003/2003",
  "legislation_title": "Regulation (EC) No 2003/2003 of the European Parliament and of the Council of 13 October 2003 relating to fertilisers (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2003-2003",
  "path": "division/F.",
  "kind": "division",
  "number": "F",
  "heading": "Nitrification and urease inhibitors",
  "text": "The urease and nitrification inhibitors listed in the Tables F.1. and F.2. below may be added to the nitrogenous fertilisers types listed in Sections A.1., B.1., B.2., B.3., C.1. and C.2. of Annex I subject to the following provisions:\n(1)at least 50 % of the total nitrogen content of the fertiliser consists of the nitrogen forms specified in column 3;\n(2)they do not belong to the fertiliser types mentioned in column 4.\nFertilisers to which a nitrification inhibitor listed in Table F.1. has been added shall have the words ‘with nitrification inhibitor ([type designation of nitrification inhibitor])’ added to their type designation.\nFertilisers to which a urease inhibitor listed in Table F.2. has been added shall have the words ‘with urease inhibitor ([type designation of urease inhibitor])’ added to their type designation.\nTechnical information, as complete as possible, must be provided with each package or bulk consignment by the person responsible for marketing. This information must enable the user in particular to determine the rates and timing of application in relation to the crop being grown.\nNew nitrification inhibitors or urease inhibitors may be included in the Tables F1 or F2 respectively after evaluation of the technical files submitted in accordance with guidelines to be elaborated for these compounds.\nF.1.\nNitrification inhibitors\nNo\nType designation and composition of the nitrification inhibitor\nMinimum and maximum inhibitor content as a percentage by mass of the total nitrogen present as ammonium nitrogen and urea nitrogen.\nUK fertiliser types for which the inhibitor may not be used\nDescription of nitrification inhibitors with which mixtures are allowed Data on permitted ratio\n1\n2\n3\n4\n5\n1\nDicyandiamide\nELINCS No 207-312-8\nMinimum 2,25\nMaximum 4,5\n2\nProduct containing dicyandiamide (DCD) and 1,2,4-triazole (TZ)\nEC# EINECS No 207-312-8\nEC# EINECS No 206-022-9\nMinimum 2,0\nMaximum 4,0\nMixture ratio 10:1\n(DCD:TZ)\n3\nProduct containing 1,2,4-triazole (TZ) and 3-methylpyrazole (MP)\nEC# EINECS No 206-022-9\nEC# EINECS No 215-925-7\nMinimum 0,2\nMaximum 1,0\nMixture ratio 2:1\n(TZ:MP)\n4\n3,4-dimethyl-1H-pyrazole phosphate (DMPP)\nEC No 424-640-9\nMinimum: 0,8\nMaximum: 1,6\n5\nIsomeric mixture of 2-(3,4-dimethylpyrazole-1-yl)-succinic acid and 2-(4,5-dimethylpyrazole-1-yl)-succinic acid (DMPSA)\nEC No 940-877-5\nMinimum: 0,8\nMaximum: 1,6\nF.2.\nUrease inhibitors\nTolerance on the portion of NPPT: 20 %.\nNo\nType designation and composition of the urease inhibitor\nMinimum and maximum inhibitor content as a percentage by mass of the total nitrogen present as urea nitrogen\nUK fertiliser types for which the inhibitor may not be used\nDescription of urease inhibitors with which mixtures are allowed Data on permitted ratio\n1\n2\n3\n4\n5\n1\nN-(n-butyl) thiophosphoric triamide (NBPT)\nELINCS No 435-740-7\nMinimum 0,09\nMaximum 0,20\n2\nN-(2-nitrophenyl)phosphoric triamide (2-NPT)\nEC# EINECS No 477-690-9\nMinimum 0,04\nMaximum 0,15\n3\nMixture of N-butylphosphorothioic triamide (NBPT) and N-propylphosphorothioic triamide (NPPT) (ratio 3:1)\nReaction mixture:\nEC No 700-457-2\nMixture of NBPT/NPPT:\nNBPT: ELINCS No 435-740-7\nNPPT: CAS No 916809-14-8\nMinimum: 0,02\nMaximum: 0,3",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Inserted by Commission Regulation (EC) No 1107/2008 of 7 November 2008 amending Regulation (EC) No 2003/2003 of the European Parliament and of the Council relating to fertilisers for the purposes of adapting Annexes I and IV thereto to technical progress (Text with EEA relevance)."
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in Regulation substituted (31.12.2020) by The Fertilisers and Ammonium Nitrate Material (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/601), regs. 1(2), 5(2)(a); 2020 c. 1, Sch. 5 para. 1(1)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "Inserted by Commission Regulation (EU) No 223/2012 of 14 March 2012 amending Regulation (EC) No 2003/2003 of the European Parliament and of the Council relating to fertilisers for the purposes of adapting Annexes I and IV thereto to technical progress (Text with EEA relevance)."
    },
    {
      "type": "F",
      "label": "F4",
      "text": "Inserted by Commission Regulation (EU) No 1257/2014 of 24 November 2014 amending Regulation (EC) No 2003/2003 of the European Parliament and of the Council relating to fertilisers for the purposes of adapting Annexes I and IV (Text with EEA relevance)."
    },
    {
      "type": "F",
      "label": "F5",
      "text": "Inserted by Commission Regulation (EU) 2019/1102 of 27 June 2019 amending Regulation (EC) No 2003/2003 of the European Parliament and of the Council relating to fertilisers for the purposes of adapting Annexes I and IV (Text with EEA relevance)."
    },
    {
      "type": "F",
      "label": "F6",
      "text": "Substituted by Commission Regulation (EU) 2016/1618 of 8 September 2016 amending Regulation (EC) No 2003/2003 of the European Parliament and of the Council relating to fertilisers for the purposes of adapting Annexes I and IV (Text with EEA relevance)."
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "Tolerance on the portion of NPPT: 20 %."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2003/2003/division/F.",
    "retrieved_at": "2026-11-01T14:55:51.297977+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}