%D 2008 %K perennial weeds %A Jukka Salonen %A Lars Olav Brandsæter %A Bo Melander %A Håkan Fogelfors %L orgprints17855 %X The NJF working group on Perennial Weeds was launched in 2001 to facilitate communication and collaboration among the research scientists working with perennial weeds. The working group belongs to the Section of Plant Protection of the NJF (Nordic Association of Agricultural Scientist). %T Activities of the NJF working group on Perennial Weeds - Comparison of seasonal sprouting readiness of three perennial weeds %P 18 %I European Weed Research Society