Envoke is a post emergent cotton herbicide developed by Syngenta Crop Protection. Envoke has been on the market for two years and has received rave reviews. In 2004, Syngenta Scientist started a series of test to determine the effects of Envoke's activity on winter weeds, specifically, glyphosate resistant horseweed. The application of 0.1 oz/A of Envoke in November provides excellent residual control of horseweed through the following spring. Envoke can be applied at 0.1 oz/A from November 1st until 90 days before cotton harvest. As of this writing, a 24 C status has been approved for Fall Envoke applications in MS and MO while waiting on approvals from AR and TN. Envoke can be applied at 0.1 oz/A from November 1st until 90 days before cotton harvest. Syngenta Crop Protection hopes to have a full section 3 label for this use soon.