Elements of Entomology PDF Download

Author: Dr. Rajendra Singh
Publisher: Rastogi Publications
ISBN: 9788171336777
Category : Entomology
Languages : en
Pages : 586

View

Book Description

Author: H.Lewin Devasahayam
Publisher: New India Publishing Agency
ISBN: 9381450633
Category : Science
Languages : en
Pages : 10

View

Book Description
Acquiring knowledge about different aspects of entomology is of vital importance in adopting appropriate measures for the control of pests and also for utilizing the beneficial insects for the benefits of man. This book deals with the basic concepts of entomology, which include: - Morphology, anatomy, adaptation and classification of insects, especially the parasitic ones, which do harm to plants, livestock and even to man. Economic role of insects with special reference to productive ones such as, honeybee, silk worm and lac insect as well as beneficial ones such as, parasitoids, predators pollinators etc. Pest management that covers usage of various plant protection chemicals, plant protection equipments, toxicology of pesticides, compatibility of pesticides etc. Non-insect pests viz., nematodes and mites, their economic role and control measures. The text is substantiated with many fine, hand-drawn figures and illustrations that will help better understanding of the text. The book, which is primarily intended for the undergraduate students of agriculture, will be of use to the postgraduate students of agriculture, to the officials working in the department of agriculture, especially those involved in plant protection work and also to the elite public who are interested in scientific agriculture.

Author: Larry P. Pedigo
Publisher: Waveland Press
ISBN: 1478647132
Category : Technology & Engineering
Languages : en
Pages : 584

View

Book Description
Larry Pedigo and Marlin Rice have produced the top pest management textbook on the market for decades. New co-author Rayda Krell has helped bring the book into the twenty-first century. The successful core concepts of the book—understanding pests in their environment and using an ecological approach to combat them—remain as robust as ever. Features that instructors have come to rely on have been retained, including insect diagnostic boxes with detailed information on important species and species groups and an appendix with keys to major insect orders. New material on genetically modified plant species and regional pest technologies complement concepts in basic and applied entomology. Taxonomies and systematics of insects have been updated throughout the book.

Author: William Sweetland Dallas
Publisher:
ISBN:
Category : Entomology
Languages : en
Pages : 440

View

Book Description

Author: William Kirby
Publisher:
ISBN:
Category : Beneficial insects
Languages : en
Pages : 658

View

Book Description

Author: Robert N. Wiedenmann
Publisher: Oxford University Press
ISBN: 0197555586
Category : Science
Languages : en
Pages : 297

View

Book Description
"Insects are seldom mentioned in history texts, yet they significantly shaped human history. The Silken Thread: Five Insects and Their Impacts on History tells the stories of just five insects, tied together by a thread originating in the Silk Roads of Asia, and how they have impacted our world. Silkworms have been farmed to produce silk for millennia, creating a history of empires and cultural exchanges; Silk Roads connected East to West, generating trade centers and transferring ideas, philosophies, and religions. The western honey bee feeds countless people, and their crop pollination is worth billions of dollars. Fleas and lice carried bacteria that caused three major plague pandemics, moved along the Silk Roads from Central Asia. Bacteria carried by insects left their ancient clues as DNA embedded in victims' teeth. Lice caused outbreaks of typhus, especially in crowded conditions such as prisons and concentration camps. Typhus aggravated the effects of the Irish potato famine, and Irish refugees took typhus to North America. Yellow fever was transported to the Americas via the trans-Atlantic slave trade, taking and devaluing the lives of millions of Africans. Slaves were brought to the Americas to reduce labor costs in the cultivation of sugarcane, which was itself transported from south Asia along the Silk Roads. Yellow fever caused panic in the United States in the 1700s and 1800s as the virus and its mosquito vector migrated from the Caribbean. Constructing the Panama Canal required defeating mosquitoes that transmitted yellow fever. The silken thread runs through and ties together these five insects and their impacts on history"--

Author: John Henry Comstock
Publisher: Franklin Classics
ISBN: 9780341717973
Category :
Languages : en
Pages : 242

View

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: William J. Bell
Publisher: Springer
ISBN: 1489933689
Category : Science
Languages : en
Pages : 523

View

Book Description
Our objective in compiling a series of chapters on the chemical ecology of insects has been to delineate the major concepts of this discipline. The fine line between presenting a few topics in great detail or many topics in veneer has been carefully drawn, such that the book contains sufficient diversity to cover the field and a few topics in some depth. After the reader has penetrated the crust of what has been learned about chemical ecology of insects, the deficiencies in our understanding of this field should become evident. These deficiencies, to which no chapter topic is immune, indicate the youthful state of chemical ecology and the need for further investigations, especially those with potential for integrating elements that are presently isolated from each other. At the outset of this volume it becomes evident that, although we are beginning to decipher how receptor cells work, virtually nothing is known of how sensory information is coded to become relevant to the insect and to control the behavior of the insect. This problem is exacerbated by the state of our knowledge of how chemicals are distributed in nature, especially in complex habitats. And finally, we have been unable to understand the significance of orientation pathways of insects, in part because of the two previous problems: orientation seems to depend on patterns of distri bution of chemicals, the coding of these patterns by the central nervous system, and the generation of motor output based on the resulting motor commands.

Author: S. S. Yazdani
Publisher: Alpha Science Int'l Ltd.
ISBN: 9788173191077
Category : Science
Languages : en
Pages : 232

View

Book Description
Ecology or the relationship of organisms to their environment has in recent years developed into a major biological discipline embracing within its field other disciplines as well. In recent years tendency has been to emphasize the various aspects of ecology from the angle of ecosystem and much stress has been laid on the conservation of natural fauna and flora.The relationship between man and insects dates back since time immemorial. Insects are foes and friends and have always been the subject of interest to human beings. The part played by the insects in any ecosystem, the hazards caused by them and the interest in conserving the beneficial ones form the general theme of the work. Various ecological aspects by taking insects as key animals has been discussed and it is hoped that the book would attract wide attention of students, teachers, researchers and persons involved in environmental as well as integrated pest management.

Author: Hermann Burmeister
Publisher:
ISBN:
Category : Entomology
Languages : en
Pages : 758

View

Book Description