Publisher's Synopsis
Excerpt from Experiments With Repellents Against the Corn Root-Aphis, 1905 and 1906
For this purpose the use of a plot of ground was obtained in June, 1905, on the farm of the Experiment Station at Urbana, on which the corn was planted in rows by hand, usually two grains to the hill. Fifteen thousand five hundred kernels were planted in this plot, 5750 of them. After treatment with kerosene, 2050 with kerosene emulsion, 2000 with tar-water, 3650 with turpentine, and 2050, with no special application, serving as checks. The principal plantings were those made June 15, of 1500 kernels, and June 28, of kernels. Smaller additional plantings, varying from 50 to 1000 kernels, were made June 29 and 30. July 18 and 21, and August 9.
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