Bimonthly Bulletin Volume 1-24.cOhio Agricultural Station
---------------------------------------------------------------
Author: Ohio Agricultural Station
Page Count: 224 pages
Published Date: 01 Mar 2012
Publisher: Rarebooksclub.com
Publication Country: Miami Fl, United States
Language: English
ISBN: 9781130201604
Download Link: Bimonthly Bulletin Volume 1-24
---------------------------------------------------------------
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 Excerpt: ...at rest; (2) male moth; (3) larva, or grub, feeding in its burrow; (4) cocoon; (5) cocoon with pupa emerging; (6) empty pupal case protruding from a burrow Extent of injury.--Trees of all ages may be subject to the attacks of this insect. In the case of small trees, as nursery stock or young orchard trees, a single larva may sometimes kill a tree by completely girdling it. Trees 5 years old or more may sustain a considerable number of larvae until the combined extent of their burrows becomes large enough to girdle the tree or seriously decrease the sap flow. In the latter case the trees become sickly, turning a light yellowish-green color; and, if they do not die as a direct result from borer injury, they soon succumb to the drouth of summer or the rigor of winter. Such trees are also commonly attacked and killed by the fruit tree bark beetle, as this insect shows a decided preference for sickly individuals. In badly infested orchards as many as 30 or more borer larvae may inhabit a single tree. If the borers are allowed to remain undisturbed in an orchard, it soon becomes seriously infested; trees die here and there; and in an incredibly short-time it not only presents an irregular appearance but becomes unprofitable. Means of control.--Although this insect has received the attention of orchardists and entomologists for the last century, no really satisfactory sprays or washes have been found which will control it. During this time an amazing list of sprays and washes of all kinds have been tried and recommended for its control. In our own experience, the best of these have failed; many have proved decidedly injurious, and not a few have caused the death of the trees on which they are applied. Various types of mechanical protectors or barriers also have pr...
Read online Bimonthly Bulletin Volume 1-24
Buy and read online Bimonthly Bulletin Volume 1-24
Download Bimonthly Bulletin Volume 1-24 ebook, pdf, djvu, epub, mobi, fb2, zip, rar, torrent
Download to iPad/iPhone/iOS, B&N nook Bimonthly Bulletin Volume 1-24
