Many Iowa farmers are going to fight weeds this year with chemicals-by spraying. We'll try to bring you up to date on what workers at Iowa State College and elsewhere have found the past year concerning the best way to do it.
Bakke, A. L. and Sylwester, E. P.
"As We Fight Weeds In 48,"
Iowa Farm Science: Vol. 2
, Article 4.
Available at: https://lib.dr.iastate.edu/farmscience/vol2/iss8/4