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

2 Proposal to set an MRL for Chlorantraniliprole

It is proposed that an MRL is set for chlorantraniliprole when used as an insecticide for brassica vegetables and pome fruits. It is proposed that Schedule One of the NZ (MRL) Food Standards 2008 be amended to include the following; this will be the resulting entry for chlorantraniliprole in Schedule One of the NZ (MRL) Food Standards 2008:

Amendment Rationale

The proposed MRL for chlorantraniliprole represents the registration in New Zealand of a new active ingredient. The proposed MRL will manage the use of chlorantraniliprole as an insecticide on brassica vegetable and pome fruits to the application rates and withholding periods that are approved good agricultural practice (GAP) in New Zealand (see below).

Chemical Information

Good Agricultural Practice

Chlorantraniliprole is proposed for use as an insecticide for brassica vegetables. Application may be 3 times per season as pests appear, at 20gai/ha with a withholding period of 7 days.

Chlorantraniliprole is also proposed for use as an insecticide for pome fruits. Application may be 3 times per season from petal fall, at 63gai/ha with a withholding period of 14 days.

Residues Information

Residue data for chlorantraniliprole in brassica vegetables supports an MRL of 0.3mg/kg at 7 days after the last treatment. An MRL of 0.3mg/kg is therefore proposed to support GAP.

Residue data for chlorantraniliprole in pome fruits supports an MRL of 0.3mg/kg at 14 days after the last treatment. An MRL of 0.3mg/kg is therefore proposed to support GAP.

Animal Transfer

Residue transfer to animals grazing treated orchards has not been assessed as it is not acceptable practice that treated orchards be grazed. Animals may consume treated brassica vegetables, however it is not expected that residues will result in any animal derived food products. Animal derived food product limits are therefore not proposed.

Dietary Risk Assessment

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 chlorantraniliprole 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 chlorantraniliprole is equivalent to 0.03% 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 chlorantraniliprole as an insecticide for use on brassica vegetables and pome fruits, according to GAP specified above, is very unlikely to pose any health risks from consumption of the harvested commodities.

Other International MRLs

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