Weed shift

A change in the change in the weed community within a field ie. relative abundance or type of weeds. This can be the result of a management practice like herbicide use or any other phenomenon that brings about a change in weed species composition. Species or biotypes adapted to current weed management practices increase, whereas weeds susceptible to those practices decrease.

Authoritative On-line References and Resources

http://www.weeds.iastate.edu/mgmt/qtr00-1/popdyn.htm

Description of Resource

A classic article on weed population dynamics on the Iowa State University Weed Science website.