Publisher's Synopsis
Excerpt from Twenty-Eighth Report of the State Entomologist on the Noxious and Beneficial Insects of the State of Illinois, 1915
The corn root-aphis, or corn root-louse, as it is more commonly called, is now the most generally injurious insect pest of the corn field in Illinois. Its injuries have been but little checked by all that has been done and printed concerning it, and they are evidently increasing slow ly in total effect. There is, in fact, no other corn - neld insect which is so frequently called to the attention of the economic entomologist. Nevertheless, the corn-root-aphis problem has been practically solved - not, perhaps, in the best way possible, or as completely as will be the case when time, money, and skilled assistance are all available for fur ther studies and experiments Undoubtedly, however, if the results which have already been established were generally put to use in the practice of the Illinois farmer, this aphis would presently lose its place at the head of the list of insects affecting corn, and would be classed among those which are onlv occasionally injurious enough to call for special notice.
It is the purpose of this article to set forth the results of our more recent investigations and experiments (1907 - 1910) in all necessary de tail, and to show what they signify and how they apply to the routine of corn culture in this state.
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