Response to Comments Received on PMRL Consultation for Azoxystrobin (PMRL2020-05)

A comment was received requesting that the Pest Management Regulatory Agency continue to apply the existing maximum residue limit (MRL) of 3 ppm for lowbush blueberries in lieu of proposing a new value for lowbush blueberries using residue data from strawberries, the representative crop of Crop Subgroup 13-07G. Although the use expansion was originally for Crop Subgroup 13-07G, except cranberries, the Registrant has since removed lowbush blueberries from the Quadris Top label (PCP #30518).

Response from the Pest Management Regulatory Agency (PMRA)

The MRL of 3 ppm for lowbush blueberries is based on the registered use for lowbush blueberries on the Quilt Fungicide label (PCP #28328), which has a different use pattern including a lower application rate and longer PHI than that requested for Crop Subgroup 13-07G, except cranberries. The MRLs proposed in PMRL2020-05 are based on residue data for strawberries, the representative crop for Crop Subgroup 13-07G. The scope of the use expansion has been revised from "Crop Subgroup 13-07G, except cranberries" to "Crop Subgroup 13-07G, except cranberries and lowbush blueberries". Lowbush blueberries have been removed from the Quadris Top label and thus, the MRL of 10 ppm will not be established for lowbush blueberries. The MRL database will continue to only capture the existing MRL of 3 ppm for lowbush blueberries which was established on 24 September 2010 via EMRL2010-23.

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