At the Sub-station at Leon, Decatur County, conducted by the Soil Section of the Iowa Experiment Station, clover was sown on the series of oat plots in the spring of 1905, some of the plots being treated with stable manure. It was noted during the season that the manured plots had the best stand, and much the best growth of clover. This is not a new discovery, but the cause seems to be a matter of speculation and conjecture. Clover is an important crop in Iowa, and is especially needed in that part of the State to supply lost humus and restore productiveness. Furthermore, it is often very difficult to get a good stand there especially on the points and clay hillsides.
Proceedings of the Iowa Academy of Science
©1907 Iowa Academy of Science, Inc.
Watson, E. B.
"Securing a Stand of Clover on the Southern Iowa Loess,"
Proceedings of the Iowa Academy of Science, 14(1), 177-186.
Available at: https://scholarworks.uni.edu/pias/vol14/iss1/13