Weed Science

Two lush crop fields to the left and a blighted field to the right

Synthetic auxin applicator training

Complete the federally mandated training required to buy or use Engenia, XtendiMax or FeXapan at your own pace in our online course.

Enroll now
Crop field with weeds

What weeds are these?

Our Weed ID Guide will help you identify the weeds on your farm.

Identify your weeds

The Weed Science program at the University of Missouri administers extension, research and teaching programs to keep you informed of the latest findings in weed control.

Our online resources include a Missouri weed ID guide, which is also available as the app ID Weeds, and a herbicide injury guide. Both of these guides are full of photos — to aid in the identification of a weed or the diagnosis of herbicide-caused crop injury, respectively. In addition, we offer numerous publications, newsletter articles, videos and PowerPoint presentations on various aspects of weed control.

If you are interested in seeing the results of specific field trials, go to our research results page. There you can search for results from our field research by year, herbicide, weed or crop.

Use Tab key to loop through the section bellow. Press Enter or Space to enter content for each tab button. Press Esc key to exit and to go to the next section at any time.

Related resources