If established, Palmer amaranth threatens the state's corn and soybean fields

Nestled on the U of M St. Paul campus is a 3-plus-acre farm that is changing the lives of many students, one tomato (and cucumber and potato) at a time.

Jared Goplen, a University of Minnesota graduate student, is testing whether crop rotation and other non-herbicide methods can make a difference in keeping weeds under control.