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Document Type

Research

Abstract

During the fall of 1889 the senior author of this paper determined that a species of plant louse, infesting roots of annual grasses was identical with the "Dogwood plant louse" (Schizoneura corni Fabr.), carrying the work far enough to prove that the winged forms could be transferred from grass roots to dogwood, on which they colonized. As he found the root forms principally on annual grasses which were of no economic value, it was naturally a question of interest to determine whether they might affect forage plants. Furthermore, the occurrence of non-migratory forms on certain of the grasses examined, left some questions which it seemed very desirable to follow up.

Publication Date

1894

Journal Title

Proceedings of the Iowa Academy of Sciences

Volume

2

Issue

1

First Page

78

Last Page

91

Copyright

©1894 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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