Published source details
Harper G., Comeau P. & Biring B. (2005) A comparison of herbicide and mulch mat treatments for reducing grass, herb, and shrub competition in the BC interior Douglas-fir zone—ten-year results. Western Journal of Applied Forestry, 20, 167-176
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.