One way that Iowa farmers who have sloping land can produce more per acre and per man is to plant their crops on the contour. We have thought this is true, but during the past year the Iowa Station and the Soil Conservation Service in cooperation with Iowa farmers conducted some experiments to try to get some measure of how m u ch increase one could expect by planting corn and soybeans on the contour as compared with planting up and down hill.
Browning, G. M.
"On the Contour- More Corn, More Beans,"
Farm Science Reporter: Vol. 4
, Article 3.
Available at: https://lib.dr.iastate.edu/farmsciencereporter/vol4/iss2/3