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Apr . 08, 2024 17:43 Back to list

Peer review of the pesticide risk assessment of the active substance abamectin



Abstract

The conclusions of EFSA following the peer review of the initial risk assessments carried out by the competent authorities of the rapporteur Member State Austria and co-rapporteur Member State Malta for the pesticide active substance abamectin are reported. The context of the peer review was that required by Commission Implementing Regulation (EU) No 844/2012, as amended by Commission Implementing Regulation (EU) No 2018/1659. The conclusions were reached on the basis of the evaluation of the representative uses of abamectin as an insecticide and acaricide on tomato and strawberry, and updated following the request from Commission to review the exposure and risk assessments as regards birds and mammals, aquatic organisms and soil macroorganisms. The risk assessment to bees and non-target arthropods was also updated. The reliable end points, appropriate for use in regulatory risk assessment are presented. Missing information identified as being required by the regulatory framework is listed. Concerns are identified.

 

Summary

Commission Implementing Regulation (EU) No 844/2012, as amended by Commission Implementing Regulation (EU) No 2018/1659, lays down the procedure for the renewal of the approval of active substances submitted under Article 14 of Regulation (EC) No 1107/2009. The list of those substances is established in Commission Implementing Regulation (EU) No 686/2012 as amended by Commission Implementing Regulation (EU) No 2016/183. Abamectin is one of the active substances listed in that Regulation.

In accordance with Article 1 of Regulation (EU) No 844/2012, the rapporteur Member State (RMS), Austria, and co-rapporteur Member State (co-RMS), Malta, received an application from the Abamectin Task Force comprising Industrias Afrasa, S.A., Lainco, S.A., Probelte S.A.U., Rotam Agrochem International Co Ltd and SAPEC Agro, S.A. for the renewal of approval of the active substance abamectin.

An initial evaluation of the dossier on abamectin was provided by the RMS in the renewal assessment report (RAR) and subsequently, a peer review of the pesticide risk assessment on the RMS evaluation was conducted by EFSA in accordance with Article 13 of Commission Implementing Regulation (EU) No 844/2012, as amended by Commission Implementing Regulation (EU) No 2018/1659.

The European Food Safety Authority (EFSA) published its conclusion on the peer review of the pesticide risk assessment of abamectin on 20 August 2020. On 1 February 2022, the European Commission sent a mandate to EFSA with a request to review the exposure and risk assessments as regards birds and mammals, aquatic organisms and soil macroorganisms. The risk assessment to bees and non-target arthropods was also updated.

The uses of abamectin according to the representative uses as an insecticide and acaricide on tomato and strawberry in permanent greenhouses and walk-in tunnels, as proposed at the European Union (EU) level result in a sufficient insecticidal and acaricidal efficacy against the target organisms.

The assessment of the data package revealed no issues that need to be included as critical areas of concern with respect to the identity, physical, chemical and technical properties of abamectin or the respective formulation.

In the area of mammalian toxicology and non-dietary exposure, no critical areas of concern were identified.

The assessment of the data package revealed no issues that could not be finalised or that need to be included as critical areas of concern with respect to residues in food and feed for the representative uses in southern Europe (SEU), besides the fact that consumer risk assessment cannot be finalised due to the data gap identified in the Fate section with respect of drinking water. Consumer risk assessment cannot be finalised for the representative uses in northern Europe (NEU) since a data gap has been identified for residue trials performed under these conditions. The maximum residue level (MRL) proposed in Article 12 of Regulation (EC) No 396/2005 (EFSA, 2014b) will need to be revised as for change of toxicological reference values (acceptable daily intake (ADI) and acute reference dose (ARfD)), since it is envisaged that acute risk may be identified for some of the crops.

The data available on environmental fate and behaviour are sufficient to carry out the required environmental exposure assessments at EU level, with the notable exception that a data gap was identified for information on the effect of water treatment processes on the nature of residues of both the active substance and its identified metabolites potentially present in surface water, when surface water is abstracted for the production of drinking water. This gap leads to the consumer risk assessment from the consumption of drinking water being not finalised for all the representative uses.

In the area of ecotoxicology, the risk to earthworms could not be finalised for the 1 × 2.7 g a.s./ha applications to tomatoes and strawberries in walk-in tunnels. High risk to several groups of non-target organisms were identified (not triggering though critical areas con concern since for each group of non-target organisms at least one safe use has been detected), i.e.:
  • Mammals (all representative uses in walk-in tunnels),
  • Birds (for the representative uses in walk-in tunnels at 3 × 18 g a.s./ha to tomatoes and 2 × 18 g a.s./ha to strawberries),
  • Aquatic organisms (for the representative uses in walk-in tunnels and in permanent greenhouses at 3 × 18 g a.s./ha to tomatoes and 2 × 18 g a.s./ha to strawberries and for walk in tunnels on these crops at 1 × 2.7 g a.s./ha, unless when used in walk-in tunnels spray drift exposure could be mitigated by more than 95%),
  • Honey bees (all representative uses in walk-in tunnels),
  • Non-target arthropods other than bees (all representative uses in walk-in tunnels),
  • Earthworms and soil macroorganisms (for the representative uses in walk-in tunnels at 3 × 18 g a.s./ha to tomatoes and 2 × 18 g a.s./ha to strawberries).

Based on the available information, abamectin does not meet the ED criteria for both humans and non-target organisms.

Background

Commission Implementing Regulation (EU) No 844/20121, as amended by Commission Implementing Regulation (EU) No 2018/16592, (hereinafter referred to as ‘the Regulation’), lays down the provisions for the procedure of the renewal of the approval of active substances, submitted under Article 14 of Regulation (EC) No 1107/20093. This regulates for the European Food Safety Authority (EFSA) the procedure for organising the consultation of Member States, the applicant(s) and the public on the initial evaluation provided by the rapporteur Member State (RMS) and/or co-rapporteur Member State (co-RMS) in the renewal assessment report (RAR), and the organisation of an expert consultation where appropriate.

In accordance with Article 13 of the Regulation, unless formally informed by the European Commission that a conclusion is not necessary, EFSA is required to adopt a conclusion on whether the active substance can be expected to meet the approval criteria provided for in Article 4 of Regulation (EC) No 1107/2009 within 5 months from the end of the period provided for the submission of written comments, subject to an extension of an additional 3 months where additional information is required to be submitted by the applicant(s) in accordance with Article 13(3). Furthermore, in accordance with Article 13(3a), where the information available in the dossier is not sufficient to conclude the assessment on whether the approval criteria for endocrine disruption are met, additional information can be requested to be submitted in a period of minimum 3 months, not exceeding 30 months, depending on the type of information requested.

In accordance with Article 1 of the Regulation, the RMS Austria and co-RMS Malta received an application from the Abamectin Task Force comprising Industrias Afrasa, S.A., Lainco, S.A., Probelte S.A.U., Rotam Agrochem International Co Ltd and SAPEC Agro, S.A. for the renewal of approval of the active substance abamectin. Complying with Article 8 of the Regulation, the RMS checked the completeness of the dossier and informed the applicants, the co-RMS (Malta), the European Commission and EFSA about the admissibility.

The RMS provided its initial evaluation of the dossier on abamectin in the RAR, which was received by EFSA on 17 April 2019 (Austria, 2019).

In accordance with Article 12 of the Regulation, EFSA distributed the RAR to the Member States and the applicants, the Abamectin Task Force comprising Industrias Afrasa, S.A., Lainco, S.A., Probelte S.A.U., Rotam Agrochem International Co Ltd and SAPEC Agro, S.A., for consultation and comments on 29 May 2019. EFSA also provided comments. In addition, EFSA conducted a public consultation on the RAR. EFSA collated and forwarded all comments received to the European Commission on 29 July 2019. At the same time, the collated comments were forwarded to the RMS for compilation and evaluation in the format of reporting table. In addition, the applicants were invited to respond to the comments received. The comments and the applicants’ response were evaluated by the RMS in column 3.

The need for expert consultation and the necessity for additional information to be submitted by the applicants in accordance with Article 13(3) of the Regulation were considered in a telephone conference between EFSA, the RMS and co-RMS on 11 October 2019. On the basis of the comments received, the applicants’ response to the comments and the RMS’s evaluation thereof, it was concluded that additional information should be requested from the applicants, and that EFSA should conduct an expert consultation in the areas of mammalian toxicology, residues, environmental fate and behaviour and ecotoxicology.

The outcome of the telephone conference, together with EFSA’s further consideration of the comments, is reflected in the conclusions set out in column 4 of the reporting table. All points that were identified as unresolved at the end of the comment evaluation phase and which required further consideration, including those issues to be considered in an expert consultation, were compiled by EFSA in the format of an evaluation table.

The conclusions arising from the consideration by EFSA, and as appropriate by the RMS, of the points identified in the evaluation table, together with the outcome of the expert consultation and the written consultation on the assessment of additional information, where these took place, were reported in the final column of the evaluation table.

Peer review of the pesticide risk assessment of the active substance abamectin

A final consultation on the conclusions arising from the peer review of the risk assessment took place with Member States via a written procedure in June 2020.

EFSA published its conclusion on the peer review of the pesticide risk assessment of abamectin on 20 August 2020 (EFSA, 2020a) in which, inter alia, a critical area of concern was identified regarding the chronic risk to aquatic invertebrates from abamectin for all the uses in permanent greenhouses and in walk-in tunnels. In addition, a high risk was identified for walk-in tunnels uses for birds and mammals, aquatic invertebrates (for the metabolite 8-carboxy-6-hydroxy avermectin B1a in permanent greenhouses as well), honeybees, non-target arthropods, earthworms and other soil macroorganisms.

In the Standing Committee on Plants, Animals, Food and Feed, discussions on a possible decision on the renewal of the active substance took place between March 2021 and May 2021. Decision-making could so far not be concluded because several issues, such as a lower range of the application/uses proposed in the dossier (i.e. one application at a lower application rate), had not been specifically considered in the risk assessment. The RMS agreed to conduct such additional risk assessment. In order for the Commission to have the information required for decision making, on 1 February 2022 the European Commission sent a mandate to EFSA with a request to review, based on the updated RAR and List of end points (LoEP) that the RMS would provide to EFSA, the exposure and risk assessments for abamectin (avermectin B1a/B1b) and its relevant metabolites in the respective compartments for the uses in strawberries and tomatoes, in particular to update:
  • exposure assessments in soil and surface water including the sediment compartment, for an application of 1 × 2.7 g a.s./ha (high-tech greenhouse, and low-tech greenhouse/walk-in tunnel);
  • the risk assessment for aquatic invertebrates for an application of 1 × 2.7 g a.s./ha (high-tech greenhouse);
  • the risk assessment for aquatic organisms, for an application of 1 × 2.7 g a.s./ha including risk mitigation measures (RMMs) beyond the 95% limit recommended by the FOCUS landscape and mitigation guidance (FOCUS, 2007) to reduce exposure (e.g. a combination of multiple RMMs such as no-spray buffer zones larger than 20 m, and drift reducing nozzles) (low-tech greenhouse/walk-in tunnel);
  • the risk assessment for birds & mammals for an application of 1 × 2.7 g a.s./ha (low-tech greenhouse/walk-in tunnel);
  • the risk assessment for earthworms and collembolan for an application rate of 1 × 2.7 g a.s./ha (low-tech greenhouse/walk-in tunnel).

EFSA was requested to update its conclusion as the results of this mandate within five months from receiving the updated RAR and LoEP from the RMS, which were received by EFSA on 28 February 2022 (Austria, 2022). On 13 May 2022, the RMS submitted a new version of the updated RAR and LoEP including also new calculations of the lower application rate for bees and non-target arthropods, in agreement with Commission, as were missing from the mandate while a high risk in walk-in tunnels was identified in the previous conclusion (Austria, 2022).

This conclusion report summarises the outcome of the peer review of the risk assessment of the active substance and the representative formulation, evaluated on the basis of the representative uses of abamectin as an insecticide and acaricide on tomato and strawberry, as proposed by the applicants, and updated following the request from Commission to review the exposure and risk assessments as regards birds and mammals, aquatic organisms and soil macroorganisms. The updated conclusions of the risk assessment as regards bees and non-target arthropods are also reported. In accordance with Article 12(2) of Regulation (EC) No 1107/2009, risk mitigation options identified in the RAR and considered during the peer review are presented in the conclusion.

A list of the relevant end points for the active substance and the formulation is provided in Appendix 18.

A key supporting document to this conclusion is the peer review report (EFSA, 2020b, updated in 2022), which is a compilation of the documentation developed to evaluate and address all issues raised in the peer review, from the initial commenting phase to the conclusion. The peer review report comprises the following documents, in which all views expressed during the course of the peer review, including minority views, where applicable, can be found:
  • the comments received on the RAR;
  • the reporting table (17 October 2019);
  • the evaluation table (23 June 2020; updated in June 2022);
  • the report(s) of the scientific consultation with Member State experts (where relevant);
  • the comments received on the assessment of the additional information (where relevant);
  • the comments received on the draft EFSA conclusion and the updated EFSA conclusion.

Given the importance of the RAR, including its revisions (Austria, 2020, 2022), and the peer review report, both documents are considered as background documents to this conclusion and thus are made publicly available.

It is recommended that this conclusion and its background documents would not be accepted to support any registration outside the EU for which the applicant has not demonstrated that it has regulatory access to the information on which this conclusion report is based.

The active substance and the formulated product

Abamectin is the ISO common name for mixture of ≥ 80% avermectin B1a: (10E,14E,16E)-(1R,4S,5′S,6S,6′R,8R,12S,13S,20R,21R,24S)-6′-[(S)-sec-butyl]-21,24-dihydroxy-5′,11,13,22-tetramethyl-2-oxo-(3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene)-6-spiro-2′-(5′,6′-dihydro-2′H-pyran)-12-yl 2,6-dideoxy-4-O-(2,6-dideoxy-3-O-methyl-α-l-arabino-hexopyranosyl)-3-O-methyl-α-l-arabino-hexopyranoside and ≤ 20% avermectin B1b: (10E,14E,16E)-(1R,4S,5′S,6S,6′R,8R,12S,13S,20R,21R,24S)-21,24-dihydroxy-6′-isopropyl-5′,11,13,22-tetramethyl-2-oxo-(3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene)-6-spiro-2′-(5′,6′-dihydro-2′H-pyran)-12-yl 2,6-dideoxy-4-O-(2,6-dideoxy-3-O-methyl-α-l-arabino-hexopyranosyl)-3-O-methyl-α-l-arabino-hexopyranoside (IUPAC).

The representative formulated product for the evaluation was ‘Abamectin 1.8% EC’, an emulsifiable concentrate (EC) containing 18 g/L abamectin.

The representative uses evaluated were spray applications as an insecticide and acaricide against dipteran leafminers and mites in permanent greenhouses and walk-in tunnels (that are closed at the time the application is made) with soil bound growing systems of tomato and strawberry. Full details of the Good Agricultural Practices (GAPs) can be found in the list of end points in Appendix 18.

Data were submitted to conclude that the uses of abamectin according to the representative uses proposed at EU level result in a sufficient efficacy against the target organisms, following the guidance document SANCO/2012/11251-rev. 4 (European Commission, 2014b).

A data gap has been identified for a search of the scientific peer-reviewed open literature on the active substance and its relevant metabolites, dealing with side effects on health and published within the 10 years before the date of submission of the dossier, to be conducted and reported in accordance with EFSA guidance on the submission of scientific peer-reviewed open literature for the approval of pesticide active substances under Regulation (EC) No 1107/2009 (EFSA, 2011).


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