Hermann Hellriegel
Hermann Hellriegel was a German agricultural chemist who discovered that leguminous plants assimilate the free nitrogen of the atmosphere.
He was born at Mausitz , in Saxony. In 1857 he became director of the agricultural experiment station of Brandenburg and Niederlausitz at Dahme, from which he resigned in 1873, and in 1882 accepted a similar post at Bernburg, where he died. From 1873 to 1882, he was Wanderlehrer at Bernburg.
Source: Wikipedia