- PDF Version (168K) - Print Friendly - Help

Proposals to Amend the New Zealand (Maximum Residue Limits of Agricultural Compounds) Food Standards 2008

8 Proposal to set MRLs for Pyraclostrobin

It is proposed that an MRL is set for Pyraclostrobin when used as a fungicide for kiwifruit and stonefruit. It is proposed that Schedule One of the NZ (MRL) Food Standards 2008 be amended to include:

Compound	CAS#	Residue definition	Food	Maximum Residue Limit (mg/kg)
Pyraclostrobin	175013-18-0	Pyraclostrobin	Kiwifruit Stonefruit	0.02(*) 0.02(*)

NOTE: (*) indicates that the maximum residue limit has been set at or about the limit of analytical quantification.

The final entry for pyraclostrobin in Schedule One of the NZ (MRL) Food Standards 2008 will therefore read:

Compound	CAS#	Residue definition	Food	Maximum Residue Limit (mg/kg)
Pyraclostrobin	175013-18-0	Pyraclostrobin	Apples Barley Grapes Kiwifruit Mammalian fat Mammalian kidney Mammalian liver Mammalian meat Milk Pears Stonefruit Wheat	0.02(*) 0.02(*) 3 0.02(*) 0.02(*) 0.02(*) 0.02(*) 0.02(*) 0.02(*) 0.02(*) 0.02(*) 0.02(*)

NOTE: (*) indicates that the maximum residue limit has been set at or about the limit of analytical quantification.

Amendment Rationale

The proposed MRLs represent new use patterns in New Zealand for the active ingredient pyraclostrobin. The proposed MRLs will manage the new uses of pyraclostrobin as a fungicide on kiwifruit and stonefruit to the application rates and withholding periods that are approved good agricultural practice in New Zealand. In addition to ensure harmonisation with overseas testing regimes for this active ingredient it is proposed the current residue definition for pyraclostrobin (Plant commodities: Sum of: Pyraclostrobin and its desmethoxy metabolite, Expressed as: Pyraclostrobin, Animal commodities: Sum of: Pyraclostrobin and metabolites hydrolysed to: 1-(4-chloro-phenyl)- 1H-pyrazol- 3-ol, Expressed as: Pyraclostrobin); be replaced by the residue definition of the parent compound (pyraclostrobin) only

Chemical Information

Common name of compound	Pyraclostrobin
Use of compound	Fungicide
Chemical Abstract Services (CAS) Registry number	175013-18-0
Type of compound	Strobilurin
Administration method	Spray

Good Agricultural Practice

Pyraclostrobin is proposed for use as a fungicide for kiwifruit. Application may be throughout flowering, at a rate of 128gai/ha with a withholding period of “do not apply after 100% bloom”.

Pyraclostrobin is proposed for use as a fungicide for stonefruit. Application may be throughout flowering, at a rate of 102gai/ha with a withholding period of “do not apply after 100% petal fall”.

Residues Information

Residue data for kiwifruit supports a limit of quantification MRL of 0.02 mg/kg when the last treatment is prior to 100% bloom. An MRL of 0.02mg/kg is therefore proposed to support GAP.

Residue data for stonefruit supports a limit of quantification MRL of 0.02 mg/kg when the last treatment is prior to 100% petal fall. An MRL of 0.02mg/kg is therefore proposed to support GAP.

Animal Transfer

Kiwifruit and stonefruit are not considered a primary animal feed commodity and therefore animal transfer of residues is not expected.

Dietary Risk Assessment

Acceptable Daily Intake (ADI)

0.03 mg/kg bw/day

The potential daily exposure via food (PDE_(food)) is used for dietary intake calculation where a value has been set. An appropriate acceptable daily intake (ADI) is used in the absence of a PDE_(food).

The chronic dietary exposure to pyraclostrobin is estimated by the National Estimated Dietary Intake (NEDI) calculation encompassing all registered uses of the chemical and food consumption data based upon the 1997 National Nutritional Survey for adults and the 1995 National Nutrition Survey of Australia, for children. The NEDI calculation is made in accordance with Guidelines for predicting dietary intake of pesticide residues (revised) [World Health Organisation, 1997].

The NEDI for pyraclostrobin is equivalent to 1.5% of the ADI. It is therefore concluded that the chronic dietary exposure is small and the risk is acceptable.

Toxicological / Public Health Assessment

It has been determined that the use of pyraclostrobin as a fungicide for use on kiwifruit and stonefruit, according to the good agricultural practice specified above, is very unlikely to pose any health risks from consumption of the harvested commodity.

Other International MRLs

To meet New Zealand’s obligations under the Agreement on the Application of Sanitary and Phytosanitary Measures the proposed MRL will be notified to the World Trade Organization. Any country may choose to comment if they believe the proposed MRL represents a barrier to their trade.