The Pest Management Regulatory Agency (PMRA) recently announced the final decision on the re-evaluation of imidacloprid insecticides (Admire, Alias). All uses of these insecticides on root vegetables including ginseng are to be cancelled. Given the lack of alternatives to imidacloprid for grub control in ginseng, PMRA extended the last date of use to May 19, 2025.
With no chemical alternatives for grub control in ginseng, it is important for us to conduct research on alternative methods to control grubs over the next 4 years. Part of that research involves understanding the biology of the pest in ginseng gardens, particularly in the year of seeding, which is probably the time when eggs are laid in the garden. It is critical for growers to provide some basic information on their current practices to guide our research.
To help us in our research on alternative controls for grubs, please fill out this 1-2-minute multiple choice survey: