The Pest Management Regulatory Agency (PMRA) has phased-out the use of the active ingredient diazinon as of December 31, 2016. As a result, Diazinon 50 WSP can no longer be used in tobacco greenhouses to control Pavement Ants. Any leftover product should be disposed of in an environmentally responsible way, such as through the CleanFARMS obsolete pesticide & livestock medication collection program.
Over the past 2 years, the Canadian Tobacco Research Foundation (CTRF) has conducted research trials to find a replacement for Diazinon 50 WSP. Several products were found to be efficacious in controlling Pavement Ants in tobacco muckbed greenhouses. Data from this work is currently being considered by the registrants of these products for supporting a submission for minor use registration.
In the interim, there are currently no pest control products registered and recommended for control of Pavement Ants in tobacco muckbed greenhouses. In past research studies, Pavement Ants were observed to prefer cornmeal to tobacco seed. Near the walkway, you can place bait stations, which are made up of cornmeal placed in a covered container with holes placed on the sides near the bottom of the container. This may entice the Pavement Ants to feed on the cornmeal rather than the tobacco seed in the seedbed.
Post prepared and sent by Canadian Tobacco Research Foundation
Mailing Address: CTRF, P.O. Box 322, Tillsonburg, ON N4G 4H5
Telephone: 519-842-8997
Web Address: http://ctrf1.com