During the past few years a study has been made of the weeds occurring in the alfalfa fields of Iowa, and of their effect upon crop production. The work reported here was clone in the summers of 1928 and 1929.
Proceedings of the Iowa Academy of Science
©1930 Iowa Academy of Science, Inc.
Hershey, A. L. and Pammel, L. H.
"Study of the Weeds of Alfalfa Fields of Iowa,"
Proceedings of the Iowa Academy of Science, 37(1), 77-85.
Available at: https://scholarworks.uni.edu/pias/vol37/iss1/13