UPDATED - Mancozeb fungicide to remain registered on some crops

On November 19, the horticultural industry learned some positive news from the Pest Management Regulatory Agency (PMRA) regarding the revised re-evaluation of mancozeb. It is a multi-site contact fungicide used in a wide variety of fruits and vegetables. 


Under the authority of the Pest Control Products Act, Health Canada has determined that continued registration of products containing mancozeb is acceptable with additional risk mitigation measures. An evaluation of available scientific information found that the registrant supported uses of mancozeb products (ground and aerial foliar application to potatoes; ground foliar application on apples, onions, sugar beets, ginseng, field cucumbers, field tomatoes, grapes, pumpkin, squash, and melon (including cantaloupe but excluding watermelon and in-furrow application to onions) meet current standards for protection of human health and the environment and have value when used according to the revised conditions of registration which includes new mitigation measures.


Risk mitigation measures will be required. 


Some uses, formulations and application methods will be cancelled including: 


-  All seed treatments (including potato seed piece treatment), greenhouse uses (in other words, tobacco, tomatoes), use on pears, carrots, celery, lettuce, watermelon, lentils, wheat, alfalfa grown for seed, as well as ornamentals and forestry uses


-  All applications using any hand-held equipment.


-  All end-use (commercial class) wettable powder or dust formulations.


This decision is welcomed by the horticultural industry because this crop protection product is valued in an integrated pest management program. Growers have the ability to rotate between chemistries to prevent resistance.


“Back in the fall of 2018, all field uses were proposed for cancellation,” says Chris Duyvelshoff, crop protection advisor for the Ontario Fruit and Vegetable Growers’ Association.  “While the loss and reduced use of mancozeb will create challenges on several crops, overall the decision represents a huge improvement from the original proposal. Some uses of mancozeb were maintained on several key crops, and this will strongly aid in disease control and pathogen resistance management.”


 For details of the PMRA’s re-evaluation decision, link here:  https://bit.ly/3nKyxSp


Source:  Pest Management Regulatory Agency November 19, 2020

Publish date: 
Thursday, November 19, 2020

Click to leave a comment

For security purposes, please confirm you are not a robot!


Cormoran insecticide label expanded

Another tool is available for managing spotted-wing drosophila in blueberries. ADAMA Agricultural Solutions has announced that the crop protection product can be used on both highbush and lowbush blueberries.

Miravis fungicide labels expanded

Syngenta Canada has announced key additions to the Miravis fungicide lineup.  This is news pertinent to diverse horticultural crops such as potatoes, strawberries and highbush blueberries.

Phosmet approved with more risk mitigation measures

The broad-spectrum insecticide has been re-evaluated and approved by the Pest Management Regulatory Agency for continued use in Canada.  The product is used in tree fruit, berries, carrots, celery and potatoes. 

Sharpen awareness of how to avoid pesticide resistance

Ontario growers are encouraged to register for an OMAFRA pesticide resistance management series. From Jan 25-28, 2021, learn more about how resistance occurs, Ontario-specific issues and management when using herbicides, insecticides and fungicides in field fruit, veg and specialty crops.

UPL promotes Grower Rewards Program

One crop protection company is highlighting its rewards program on a portfolio of products that include fungicides, herbicides, seed treatments, insecticides, biostimulants and plant growth regulators.