Finding Endemic Soil-Based Controls on Weed Growth
It was our objective to determine whether plant–soil feedbacks confer weed suppression to a shrub–steppe ecosystem in Washington State. We found that soils developed by native bluebunch wheatgrass communities reduced knapweed growth from 18 to 5% ground cover. A pairwise feedback model developed from our data successfully predicted the native and weedy plant distribution seen on the landscape. We suggest that endemic soil-based mechanisms of weed control may be common and will produce novel techniques for the management of invasive plants.
Kulmatiski, A., K.H. Beard, and J.M. Stark. 2004. Finding endemic soil-based controls on weed growth. Weed Technology 18:1353-1358 Suppl. S.