WSSA herbicide mode of action update

The Herbicide Resistance Action Committee recently updated the herbicide mode of action system. This tool is used to aid in rotating herbicides to reduce the chance that weeds will develop resistances. Rotating modes of action (refraining from using a mode of action more than once a year per orchard) decreases the chance that any weed that may be starting to develop a resistance to one herbicide.

More information on the mode of action update can be found here:

https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=47859