The Pest Management Regulatory Agency (PMRA) recently announced the approval of a minor use label expansion registration for Prism herbicide for control of labeled weeds on grapes in Canada. Prism herbicide was already labeled for use on a number of crops in Canada for control of several weeds.

This minor use project was submitted by British Columbia as a result of minor use priorities established by growers and extension personnel. 

The following is provided as an abbreviated, general outline only. Users should be making weed management decisions within a robust integrated weed management program and should consult the complete label before using Prism herbicide.

Prism herbicide is toxic to aquatic organisms and non-target terrestrial plants.  Do not apply this product or allow drift to other crops or non-target areas. The use of this chemical may result in contamination of groundwater particularly in areas where soils are permeable and/or the depth to the water table is shallow. Do not contaminate off-target areas or aquatic habitats when spraying or when cleaning and rinsing spray equipment or containers. 

Follow all other precautions, restrictions and directions for use on the Prism herbicide label carefully. 

For a copy of the new minor use label contact your local crop specialist, regional supply outlet or visit the PMRA label site. 

Source:  Jim Chaput, OMAFRA minor use coordinator, September 9, 2020.