Symbiotic Nitrogen Fixation: Proceedings of the 14th North American Conference on Symbiotic Nitrogen Fixation, University of Minnesota, St. Paul Minnesota, U. S. A. July 25-29, 1993

During the past three decades there has been a large amount of research on biological nitrogen fixation, in part stimulated by increasing world prices of nitrogen-containing fertilizers and environmental concerns. In the last several years, research on plant—microbe interactions, and symbiotic and asymbiotic nitrogen fixation has become truly interdisciplinary in nature, stimulated to some degree by the use of modern genetic techniques. These methodologies have allowed us to make detailed a...