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Excerpt from Laboratory Evaluations of Compounds as Repellents to Cockroaches, 1953-1974 The tests were always started on Monday, and the cockroaches were counted daily except Sunday for 1 week. With as little disturbance to the insects as possible, a count was made by observing through the bottom of the crystalliz ing dish. Only the insects on the inner surface of the shelters were counted. Cockroaches that had entered neither container or were merely hiding beneath the shelter were not included in the day's count. After each count the insects were shaken out of their shelters and the two shelters reversed to force the insects to make another choice. Each test was replicated 2 or 3 times resulting in a minimum of 12 counts for each test material. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
This handbook brings together in one place sources which entomologists, chemists, botanists, insect ecologists, physiologists, and pharmacologists may consult for information to supplement that reported herein on the subject of plant-derived feeding deterrents.
This handbook series includes several naturally occurring chemicals that exhibit biological activity. These chemicals are derived from plants, insects, and several microorganisms. Volume I of this series is covers the theory and practice of the strategies for pest control and methods for detection.Moreover, it presents extensive tables that provide the information you need to select the most appropriate bioassay for a particular plant growth regulator or hormone. In addition to the chapters on bioassays, Volume I provides a solid introduction to the theory and practice of natural pesticide use, including in-depth discussions of integrated management systems for weed and pest control, the state-of-the-art use of computers in pest management, and allelochemicals as natural protection. Guidelines on toxicological testing and EPA regulation of natural pesticides are also detailed.