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Brooklyn Botanic Garden Record Volume 1-4 (Paperback) Loot Price: R473 Discovery Miles 4 730
Brooklyn Botanic Garden Record Volume 1-4 (Paperback): Brooklyn Botanic Garden
Brooklyn Botanic Garden Record Volume 1-4 (Paperback): Brooklyn Botanic Garden

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Brooklyn Botanic Garden Record Volume 1-4 (Paperback)

Brooklyn Botanic Garden

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Loot Price R473 Discovery Miles 4 730

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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. 1912 Excerpt: ... from Florida. The white fly is not harmed by nicotine fumigation, but succumbs to hydrocyanic acid gas. However, owing to the dangerous nature of the last named remedy, it was thought inadvisable to make use of this method of extermination. Owing to the active movements of this pest when in the adult stage, it is rather difficult to exterminate it by means of spraying, since it is necessary for the spray actually to hit the insect; but by spraying two or three times at intervals of a day or two, the pest may, for the most part, be overcome. Other sucking insects that are almost invariably present in plant houses (and the conservatories of the Brooklyn Botanic Garden are not exceptional in this respect) are the mealy bug(DactyIopius destructor), several species of scale insects belonging to the Coccidae, and the red spider (Tetranychus telarius). Mealy bug and scale insects can be destroyed by constant spraying with a contact spray of some kind, the most effective preparation being kerosene emulsion. The spraying, however, has to be repeated often, and the more efficacious method is, where the nature of the plants permit, to wash off the insects with a sponge and soapy water. Red spider flourishes in a dry atmosphere, and the best methods of control are the maintenance of humidity and spraying with clear water, which must be applied to the underside of the leaves, where the red spider has his habitation, with a sufficient force to break the webs. Potassium sulphide, at the rate of one or two ounces to three gallons of water, applied in the same way, is also helpful, but has the disadvantage of discoloring any paint with which it comes in contact. A sucking insect, which amongst horticulturists goes by the name of the white tailed mealy bug, lantane bug, and...


Imprint: Rarebooksclub.com
Country of origin: United States
Release date: May 2012
First published: March 2010
Authors: Brooklyn Botanic Garden
Dimensions: 246 x 189 x 5mm (L x W x T)
Format: Paperback - Trade
Pages: 86
ISBN-13: 978-1-153-91953-1
Barcode: 9781153919531
Categories: Books
LSN: 1-153-91953-2

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