In the spring of 2016 there was interest from the GWFA projects committee and board in trying out different biological control agents for weed control. After some research and discussion with other Forage and Applied Research Associations, GWFA decided to develop a couple of projects to test weevil success. GWFA reached out to its membership and its partners to see if there would be any interest in partnering on a project with the Canada Thistle Stem Mining Weevil.
Through the summer GWFA staff developed two different projects and protocols for running the trials. The first is the Monitoring Project. It is a set area of about four meters by four meters. Thistle stand counts were done to determine an approximate population within the test area. Then one cup of weevils would be released into the center of the test area. A cup of weevils contains 105 weevils.