Download or read book Taxonomy of Some Scale Insects of the Genus Parlatoria Encountered in Plant Quarantine Inspection Work Classic Reprint written by Harold Morrison and published by Forgotten Books. This book was released on 2018-03-17 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Taxonomy of Some Scale Insects of the Genus Parlatoria Encountered in Plant Quarantine Inspection Work The following discussion attempts (1) to modify certain published, but apparently incorrect, synonymy among the species of Parlatoria; (2) to call attention to some new synonymy that needs recognition; to increase the available knowledge on the distribution and host relationships of the species discussed; and (4) to present information and illustrations to aid in the recognition of these species. 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.
Download or read book Taxonomy of Some Scale Insects of the Genus Parlatoria Encountered in Plant Quarantine Inspection Work written by Harold Morrison and published by . This book was released on 1939 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication deals with the classification of scale insects in the genus Parlatoria that are possibly encountered with plant materials that come into the United States from foreign sources.
Download or read book Taxonomy of Some Scale Insects of the Genus Parlatoria Encountered in Plant Quarantine Inspection Work written by and published by . This book was released on 1939 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Taxonomy of Some Scale Insects of the Genus Parlatoria Encountered in Plant Quarantine Inspection Work written by United States. Department of Agriculture and published by . This book was released on 1939 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Taxonomy of Some Social Scale Insects of the Genus Parlatoria Encountered in Plant Quarantine Inspection Work written by Harold Morrison and published by . This book was released on 1939 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Classification of the Scale Insect Genus Asterolecanium written by Louise May Russell and published by . This book was released on 1941 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revisionary study of the genus Asterolecanium has evolved from unsuccessful attempts to identify accurately an injurious member of the genus which evidently was introduced into the United States and from difficulty experienced in satisfying numerous requests for correct identifications of other economically important species. Consideration of literature and specimens in these efforts disclosed a degree of confusion regarding many of the especially destructive species which could be clarified only through a critical classificatory review of the kind here presented. In this publication the writer has attempted to provide descriptions and illustrations adequate for the identification of the intended species and a classification of these species based primarily on a critical study of their morphology.
Download or read book Scale Insects of Central Europe written by M. Kosztarab and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to the scientists whose professional devotion and accomplish ments in research on scale insects of the area made the compilation of this book possible. This book has two primary objectives: (1) to enable interested workers, who are not specialists of scale insects, to recognize and indentify these to families, genera and species; and (2) to provide information on the life cycle, host-plant range, natural enemies, geographical distribution, economic importance for each known species from Central Europe, and to provide a bibliography on each taxa covered. Scale insects are important pests of fruit and nut trees, forest vegetation, woody ornamentals, greenhouse and indoor plants. World-wide losses and increased production costs attributed to scale insects are estimated to reach $5 billion annually. It is difficult to recognize them because of their microscopic size and hidden habits. Identification of pest species enables plant growers to check appropriate reference sources for biological information and to select control methods.
Download or read book An Annotated List of Generic Names of the Scale Insects Vol 2 written by Michael Kosztarab and published by Forgotten Books. This book was released on 2018-09-14 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from An Annotated List of Generic Names of the Scale Insects, Vol. 2: Homoptera, Coccoidea The author placed this genus in the Pseudococcidae and stated that its relationship to other genera was obscure. 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.
Download or read book Das Tierreich eine Zusammenstellung und Kennzeichnung der rezenten Tierformen written by and published by Walter de Gruyter. This book was released on 1999 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Papers on Coccidae Or Scale Insects written by C. L. Marlatt and published by Forgotten Books. This book was released on 2018-01-12 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Papers on Coccidae or Scale Insects: New Species of Diaspine Scale Insects The species described below as new to science are mostly insects of potential economic importance, as indicated by place of origin and host plants. The facts concerning each of these species in these particulars are given in the notes accompanying the descriptions. 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.
Download or read book The Blattidae of North America written by Morgan Hebard and published by Forgotten Books. This book was released on 2016-12-29 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Blattidae of North America: North of the Mexican Boundary Detailed descriptions of each genus and species in the present paper were deemed inadvisable, but careful analyses of the features of real differential value are given as well as full descriptions of coloration. Particular attention is also given to the range of vari ation in each species, as confusion in subsequent work is much the more likely to occur upon encountering features representing mere individual, though striking, variations. 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.
Download or read book A Classification of the Scale Insect Genus Asterolecanium written by Louise May Russell and published by . This book was released on 1941 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revisionary study of the genus Asterolecanium has evolved from unsuccessful attempts to identify accurately an injurious member of the genus which evidently was introduced into the United States and from difficulty experienced in satisfying numerous requests for correct identifications of other economically important species. Consideration of literature and specimens in these efforts disclosed a degree of confusion regarding many of the especially destructive species which could be clarified only through a critical classificatory review of the kind here presented. In this publication the writer has attempted to provide descriptions and illustrations adequate for the identification of the intended species and a classification of these species based primarily on a critical study of their morphology.
Download or read book The Purple Scale Classic Reprint written by Henry Josef Quayle and published by Forgotten Books. This book was released on 2018-01-08 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Purple Scale The description of this insect given by Packard was made simply from unpublished figures and, of course, was inadequate. The first complete description was given by Comstock in his 1880 report, but he adopted the same specific name as that given by Packard. 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.
Download or read book Disease in a Minor Chord written by Edward Arthur Steinhaus and published by . This book was released on 1975 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Economic Importance of Insects written by Dennis S. Hill and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few decades there has been an ever-increasing component in most BSc Zoology degree courses of cell biology, physiology and genetics, for spectacular developments have taken place in these fields. Some aspects of biotechnology are now also being included. In order to accommodate the new material, the old zoology courses were altered and the traditional two-year basis of systematics of the animal kingdom, comparative anatomy (and physiology) and evolution, was either severely trimmed or reduced and presented in an abridged form under another title. Soon after these course alterations came the swing to modular teaching in the form of a series of shorter, separate courses, some of which were optional. The entire BSc degree course took on a different appearance and several different basic themes became possible. One major result was that in the great majority of cases taxonomy and systematics were no longer taught and biology students graduated without this basic training. We field biologists did appreciate the rising interest in ecology and environ mental studies, but at the same time lamented the shortage of taxonomic skills, so that often field work was based on incorrect identifications. For years many of us with taxonomic inclinations have been bedevilled by the problem of teaching systematics to undergraduates. At a guess, maybe only 5% of students find systematics interesting. It is, however, the very basis of all studies in biology - the correct identification of the organism concerned and its relationships to others in the community.
Download or read book Biological Control by Augmentation of Natural Enemies written by R. Ridgway and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: The protection of agricultural crops, forest, and man and his domestic animals from annoyance and damage by various kinds of pests remains a chronic problem. As we endeavor to improve pro duction processes and to develop more effective and acceptable tactics for achieving this protection, we must give high priority to all potentially useful techniques for the control and management of insects. Pest control is recognized as an acceptable and necessary part of modern agriculture. Methods employed vary greatly and tend to reflect compromises involving 3 determining factors: technological capability, economic feasibility, and social acceptability. How ever, these factors are also subject to change with time since each involves value judgments that are based on available information, cost, benefit considerations, the seriousness of the pest problem, and the political climate. Whatever method is chosen, energy resources continue to dwindle under the impact of increasing popu lation, and it is inevitable that greater reliance must be placed upon renewable resources in pest management. One alternative is the use of a pest management method that uses the energy of the pest's own biomass to fuel a self-perpetuating control system. The use of biological control agents for the control of pests has long been an integral part of the pest management strategy in crop production and forestry and in the protection of man and animals. The importance and unique advantages of the method are well recognized; numerous treatises deal with accomplishments and methodologies.
Download or read book Ecological Methods written by Peter A. Henderson and published by John Wiley & Sons. This book was released on 2016-02-03 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: 4th edition of this classic Ecology text Computational methods have largely been replaced by descriptions of the available software Includes procedure information for R software and other freely available software systems Now includes web references for equipment, software and detailed methodologies
