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Author: Henry Josef Quayle Publisher: Forgotten Books ISBN: 9780265892954 Category : Languages : en Pages : 90
Book Description
Excerpt from Biology and Control of Citrus Insects and Mites Earlier bulletins published by the University of California on citrus insects have been out of print for several-years, and the aim of the present publication is to replace in part those earlier bulletins, for which there has been a constant demand, as well as to bring the subject Of citrus-insect control in California up to date. Since many of the requests call for detailed information on the biology of the pests, and because such information is least available, it seems desirable to cover that phase of the subject as adequately, as the limited space in this publica tion will allow. The order of discussion of the pests is more or less in accordance with their classification as they occur in the animal kingdom, and not necessarily in accordance with their relative importance as pests of citrus. 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.
Author: Henry Josef Quayle Publisher: Forgotten Books ISBN: 9780265892954 Category : Languages : en Pages : 90
Book Description
Excerpt from Biology and Control of Citrus Insects and Mites Earlier bulletins published by the University of California on citrus insects have been out of print for several-years, and the aim of the present publication is to replace in part those earlier bulletins, for which there has been a constant demand, as well as to bring the subject Of citrus-insect control in California up to date. Since many of the requests call for detailed information on the biology of the pests, and because such information is least available, it seems desirable to cover that phase of the subject as adequately, as the limited space in this publica tion will allow. The order of discussion of the pests is more or less in accordance with their classification as they occur in the animal kingdom, and not necessarily in accordance with their relative importance as pests of citrus. 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.
Author: Henry Josef Quayle Publisher: Forgotten Books ISBN: 9781396076749 Category : Business & Economics Languages : en Pages : 34
Book Description
Excerpt from Control of Citrus Insects and Mites Spraying for Black S cale. - The black scale, which lacks the firm waxy covering that protects such scales as the red, yellow, and purple, may be satisfactorily controlled by Oil sprays and yields to Oil sprays Of the lighter grades, which are not SO detrimental to the tree. These sprays are also valuable for the control Of the red mite, which may be present in much Of the black-scale area. A light-medium Oil is used at a strength Of 2 per cent as an emulsion or per cent as an emulsive. 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.
Author: H J (Henry Josef) 1876- Quayle Publisher: Hassell Street Press ISBN: 9781014427182 Category : Languages : en Pages : 88
Book Description
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Henry Josef Quayle Publisher: Forgotten Books ISBN: 9781390914733 Category : Science Languages : en Pages : 60
Book Description
Excerpt from Red Spiders and Mites of Citrus Trees Next to the scale insects, red spiders and mites are the most important pests of citrus trees in California. On account of their small size, and because the foliage and fruit of the tree are not conspicuously marred either by their presence or by the covering of sooty mold fungus, as is the case with some of the scale insects, the actual injury done by red spiders and mites is not always appreciated. _their distribution is very general over the citrus sections, and they may be found in some numbers at most any season of the year. So long as they do not become numer ous the injury they do is, not important and in such cases it is not good economy to apply treatment. Because of their more orless continual presence in scattering numbers some growers take red spiders as a mat ter of course, and fail to recognize their importance when they become abundant and do damage, or come to a realization of their injurious nature after most of the damage has been done and the spiders them selves begin to disappear, as they often do. While, therefore, the presence of spiders in scattering numbers should be the cause Of no par ticular concern, the presence of. Excessive numbers of spiders should be the cause of enough concern for the grower to start immediately to apply control measures. Dropping of the leaves and fruit is the ultimate result of red spider injury. But the cause should be checked long before this extreme effect is evident. 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.
Author: Vincenzo Vacante Publisher: CABI ISBN: 1845934989 Category : Technology & Engineering Languages : en Pages : 392
Book Description
This book, which is divided into two parts, focuses on mites associated with citrus. The first part provides (i) an overview of the world's citriculture, species and varieties cultivated, and the importance of injurious mites; (ii) introduction to morphology and classification of mites; (iii) methods and techniques for collecting, preserving, preparing and rearing mites; (iv) feeding mechanisms, symptoms and plant damage; and (v) biological, chemical and integrated control. The second part consists of (i) a key to the identification of subfamilies, tribes, genera and species; and (ii) morphological characters, systematic outline, bio-ecology, natural enemies, symptomatology, damage and control of known species of Phytoptidae, Eriophyidae, Diptilomiopidae, Tarsonemidae, Tenuipalpidae, Tuckerellidae and Tetranychidae.
Author: Harry Scott Smith Publisher: Forgotten Books ISBN: 9780260788665 Category : Languages : en Pages : 80
Book Description
Excerpt from The Biological Control of Mealybugs Attacking Citrus Great difficulty has always been experienced in the attempt to control these insects on citrus trees. The ordinary methods of control for scale insects, fi.e., Spraying and fumigation, have uniformly failed to bring relief, even when applied at much greater strength than has been necessary to handle satisfactorily such pests as the black, red, and purple scales. Much experimental work has been carried out. By the United States Department of Agriculture, the Citrus Experiment Station, and the County Agricultural Commissioners, in the hope of discovering improved methods or more satisfactory insecticides for the purpose, but the resistance of these insects has been so great that it has seemed practically impossible to destroy them without seriously damaging the tree and fruit. The situation led entomologists to give consideration to radically different methods for the suppression of mealybugs, and out of this has come the biological method, the discussion of which is the pri mary object of this bulletin. 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.
Author: Henry Josef Quayle Publisher: Forgotten Books ISBN: 9780266810629 Category : Business & Economics Languages : en Pages : 40
Book Description
Excerpt from The Control of Citrus Insects The acid used in fumigation work is the commercial sulphuric acid (h2804) of 66 degrees Beaume, or about 93 per cent pure. The cost of this product is from to 2 cents per pound. 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.
Author: Henry Josef Quayle
Author: Henry Josef Quayle
Author: Henry Josef Quayle
Author: H. J. Quayle
Author: H. J. Quayle
Author: H J (Henry Josef) 1876- Quayle
Author: Henry Josef Quayle
Author: Henry Josef Quayle
Author: Vincenzo Vacante
Author: Harry Scott Smith
Author: Henry Josef Quayle