Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Native warm-season grasses resist spotted knapweed resurgence.

Abstract

This paper presents the results of studies conducted in Michigan, USA, from 1999 to 2005, to determine the resistance of native warm-season grasses, i.e. big bluestem (Andropogon gerardii), little bluestem (Schizachyrium scoparium), switchgrass (Panicum virgatum) and Indian grass (Sorghastrum nutans) on the spotted knapweed (Centaurea stoebe) resurgence. It was shown that native warm-season grasses were able to successfully compete with spotted knapweed. Burning and hand weeding of residual spotted knapweed populations along with sowing of native warm-season grasses were highly efficient in managing the resurgence of spotted knapweed in knapweed-infested sites.