Eric Riley, former MU Weed Science Research Specialist, discusses the results of his research on the management of giant ragweed. Snow-on-the-Mountain (<em>Euphorbia marginata</em>) is one of the most poisonous weed species encountered in Missouri pastures. Spiny amaranth (<em>Amaranthus spinosus</em>) infesting a pasture in northwest Missouri. Burcucumber (Sicyos angulatus) is a summer annual weed resembling cultivated cucumber; the weed is becoming more problematic in agronomic crops.

weed science

Fun Facts

Scientists have discovered that earthworms contribute to the spread of giant ragweed by systematically collecting and burying its seeds in their burrows.


Welcome to the University of Missouri's Weed Science homepage. Here you can find information related to our extension, research, and teaching programs or visit some of our web resources like the Missouri Weed Identification or Herbicide Injury Guides. In our "Research Results" section, you can search results from our field research by year, herbicide, weed, or crop. Additionally, you can click on our publication section to see all of the publications and newsletter articles we provide as well as to view and/or listen to some of our power point presentations. We welcome your comments and/or suggestions about this site.

Click here for dicamba-related research results and presentations.

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