Almost forty years have passed since Hellriegel and Wilfarth solved the nitrogen problem in soil fertility, by giving a comprehensive explanation of how legumes, with the aid of bacteria living in the nodules on their roots, could grow in a medium devoid of any combined nitrogen. During this time considerable advancement has been made in our knowledge of the subject of soil bacteriology, particularly with reference to inoculation, but, all soil bacteriologists will agree that there yet remain many unsolved problems related to the inoculation of legumes. The purpose of this paper is to call attention very briefly to some of these important problems that await solution.
Proceedings of the Iowa Academy of Science
©1925 Iowa Academy of Science, Inc.
Erdman, Lewis W.
"Unsolved Problems Related to the Inoculation of Legumes,"
Proceedings of the Iowa Academy of Science, 32(1), 71-75.
Available at: https://scholarworks.uni.edu/pias/vol32/iss1/10