. An annotated list of the important North American forest insects. Forest insects. MANAGEMENT OF PLANTATIONS TO PREVENT INJURY. In the first place it is necessary, in order to provide against future losses from the borer, that a thorough survey be made in May and June, not onl}^ of the area to be utilized, but of the entire neighborhood for a radius of a mile or more from its borders, for the purpose of locating and destroying scattering trees and groves which are more or less seriousl}' infested or damaged by the borer. It would seem that the control of such large areas, by purchase or under
. An annotated list of the important North American forest insects. Forest insects. MANAGEMENT OF PLANTATIONS TO PREVENT INJURY. In the first place it is necessary, in order to provide against future losses from the borer, that a thorough survey be made in May and June, not onl}^ of the area to be utilized, but of the entire neighborhood for a radius of a mile or more from its borders, for the purpose of locating and destroying scattering trees and groves which are more or less seriousl}' infested or damaged by the borer. It would seem that the control of such large areas, by purchase or under a plan of cooperation between the owners of the land or trees, is one of the most important requisites for success in pre- venting future losses from the ravages of this and other insects in small as well as large plantations. In fact, it is the writer's opinion that with this precaution properly and continuousl}^ carried out, locust may be successfully protected from the borer in any locality. In the subsequent management of planta- tions and of natural forest and sprout growth it is important each year to locate and de- stroy the worst infested trees for the purpose of killing the borers in the wood and to conduct the thinning and commercial cut- ting operations during the period between October of one year and April of the next, in order to destroy the young borers before they enter the wood. Worthless, scrubby, borer-infested trees should be killed outright by stripping the bark from 4 or 5 feet of the lower stem during August to prevent sprouts and seed production from them and at the same time to destroy the eggs and young borers. Trees ^"'- ^-Tiie locust borer (Cyiime Ti I'.i- •^^ ni robiniiv): Hibernation or larval deadened in this manner will usually be so completely killed that not a single root sprout will appear. Therefore this method is of special value in preventing sprout reproduction from inferior individual cells in outer portion of living inner
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Keywords: ., bookauthorhopkinsadandrewdelmar, bookcentury1900, bookdecade1900
