Commodity Substance: Urea

Food and Environment Protection Act 1985
Control of Pesticides Regulations 1986
Control of Pesticides Regulations (Northern Ireland) 1986

Date of issue: 7 June 2022

Date of expiry: 31 August 2025 (unless earlier decisions are made or further prescribed extensions)

Notice is hereby given that in exercise of the powers conferred by Regulation 5 of the Control of Pesticides Regulations 1986 (SI 1986/1510) (as amended) and of all other powers enabling them in that behalf, the Health and Safety Executive ("HSE") for and on behalf of the Secretary of State, the Welsh Ministers and the Scottish Ministers and the Department of Agriculture, Environment and Rural Affairs in Northern Ireland, have given full approval for the use of the following Commodity substance:

≥ 98 % w/w Urea

This Approval is Subject to the Following Conditions

Field of use

Only as a forestry fungicide.


Cut stumps of trees.

Maximum Individual Dose

1 litre of 37% w/v aqueous solution/m2 of cut stump.

Maximum number of treatments

One per cut stump.

Latest time of application

At felling.

Operator Protection

When used at work, the following must be observed:

  1. Engineering control of operator exposure must be used where reasonably practicable in addition to the following personal protective equipment: Operators must wear suitable protective gloves when mixing urea solution.
  2. However, engineering controls may replace personal protective equipment if a Control of Substances Hazardous to Health (COSHH) assessment shows they provide an equal or higher standard of protection.

Advisory Notes

  1. Pesticides approved for amateur use may be used by professional operators without user certification.
  2. For the treatment of cut stumps of trees, the following dyes may be used at 0.04% w/v concentration when mixed with solution of urea:
    1. Kenacid Turquoise V5898 (CI Acid Blue 42045);
    2. Denacid Turquoise AN 200 (CI Acid Blue 9 42090);
    3. Duasyn Acid Blue AE-20 (CI Acid Blue 9 42090).
  1. Operators should wear rubber or other chemical-proof gloves, a nuisance dust mask and a cotton/terylene overall when handling dye powder.

Further information

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Updated 2023-02-23