PMRA: Clothianidin & Thiamethoxam Pollinator Risk Re-evaluation

December 20, 2017
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Additional reviews related to re-evaluations and special reviews previously announced in respect of clothianidin and thiamethoxam will be published separately at a later date. Anticipated time frames for decisions related to these activities are outlined in: Update on the Neonicotinoid Pesticides (December 2017).

Clothianidin:
Health Canada is proposing to phase out the following uses:
– Foliar application to orchard trees and strawberries, and
– Foliar application to municipal, industrial and residential turf sites.

In order to protect pollinators, Health Canada is proposing the following change to the conditions of use of clothianidin:
– Reduce maximum number of foliar applications to cucurbit vegetables to one per season.

To minimize bee exposure to dust during planting of treated seed, additional label statements are proposed for the following use:
– Seed treatment of cereal crops.

Thiamethoxam:
Health Canada is proposing that the following uses be phased out:
– Foliar and soil application to ornamental crops that will result in pollinator exposure,
– Soil application to berry crops, cucurbit crops and fruiting vegetables, and
– Foliar application to orchard trees.

In order to protect pollinators, Health Canada is proposing that the following crops cannot be sprayed before and/or during bloom:
– Foliar application to legume and outdoor fruiting vegetables, anD
– Foliar application to berry crops.

To minimize bee exposure to dust during planting of treated seed, additional label statements are proposed for the following use:
– Seed treatment of cereal and legume crops.

Next Steps: The public, including the registrants and stakeholders, are encouraged to submit additional information that could be used to refine risk assessments during the 90-day public consultation period upon publication of Proposed Re-evaluation Decision PRVD2017-23, Clothianidin and PRVD2017-24, Thiamethoxam.