DUMAS-JOHANSEN had a close relationship and cooperation with: the Danish Farmers Unions (local and national level) as well as specific producers unions.

Since its foundation, DUMAS-JOHANSEN AGRICULTURAL TOURS OF DENMARK has been aiming at broadening the understanding between individual countries and their peoples. Parts of this aim are achieved by arranging conferences and study trips to Denmark (and southern part of Scandinavia) as well as professional agricultural tours where the technical level, venue and level of comfort is arranged accordingly. Semilar arrangements are made to Asia, Northern America, Africa and Europe for Scandinavian groups.