has produced a poster of herbicide structures grouped by their mode of action.

The new version (2020) is available now

You can print this poster in large format for the wall.

For a high resolution PDF of the New 2020 Poster Click Here

PERMISSION MUST BE OBTAINED FIRST if you intend to base a significant portion of a scientific paper on data derived from this site. Citation:
Heap, I.  The International Herbicide-Resistant Weed Database.  Online.  Friday, February 26, 2021 .  Available Copyright © 1993- 2021 All rights reserved. Fair use of this material is encouraged. Proper citation is requested.