Author: Walter Wilson FroggattPublisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Two New Wheat Pests
Author: Walter Wilson FroggattPublisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Two New Wheat Pests (Classic Reprint)
Author: Walter Wilson FroggattPublisher: Forgotten Books
ISBN: 9780282600709
Category : Science
Languages : en
Pages : 20
Book Description
Excerpt from Two New Wheat Pests The experimental wheat plots at the Wagga Experiment Farm were also damaged in a similar manner, and in some plots the majority of the stem: were snapped ofi' and'lyin'g on the ground. At the request of the Experimentalist, I inspected these plots early in December, and tiound that aphis Was again the came of the damage. 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.
Compendium of Wheat Diseases and Pests
Author: William W. BockusPublisher: American Phytopathological Society
ISBN: 9780890543856
Category : Wheat
Languages : en
Pages : 0
Book Description
Reference in this publication to a trademark, proprietary product, or company name by personnel of the U.S. Department of Agriculture or anyone else is intended for explicit description only and does not imply approval or recommendation to the exclusion of others that may be suitable. --Book Jacket.
Georgia Pest Management Handbook
Author: Emily CabreraPublisher: University of Georgia Press
ISBN: 0820361577
Category : Technology & Engineering
Languages : en
Pages : 264
Book Description
The Georgia Pest Management Handbook provides current information on selection, application, and safe use of pest control chemicals. This handbook has recommendations for pest control around homes and on pets; for pests of home garden vegetables, fruits, and ornamentals; and for pests of public health interest associated with our homes. Cultural, biological, physical, and other types of control are recommended where appropriate. Pesticide recommendations are based on information on the manufacturer labels and on performance data from research and extension trials at the University of Georgia and its sister institutions. Because environmental conditions, the severity of pest pressure, and methods of application vary widely, recommendations do not imply that performance of pesticides will always be acceptable. This publication is intended to be used only as a guide. Trade and brand names are used only for information. The University of Georgia does not guarantee nor warrant published standards on any product mentioned; nor does the use of a trade or brand name imply approval of any product to the exclusion of others that may also be suitable. Always follow the use instructions and precautions on the pesticide label. For questions, concerns, or improvement suggestions regarding the Georgia Pest Management Handbook, please contact your county agent.
Urban Entomology
Author: Walter EbelingPublisher: Division of Agricultural Sciences University of California
ISBN:
Category : Science
Languages : en
Pages : 720
Book Description
Stored-grain Pests
Author: Insects of Stored Grain
Author: David ReesPublisher: CSIRO PUBLISHING
ISBN: 0643093850
Category : Reference
Languages : en
Pages : 81
Book Description
A pocket reference that allows the non-specialist to identify major insect and arachnid pests found in stored cereal grains, grain products and grain legumes. It describes most storage pests found worldwide and provides concise information on the biology, distribution, damage and economic importance of each species. Each entry contains at least one color photograph. The notes for each species tell the nature of the pest or beneficial and the commodity affected; temperature and humidity conditions at which the species can survive; optimum conditions at which eggs take the shortest time to develop into adults; and maximum population growth rate per month. This new edition covers twice as many species and includes more detail on distribution, host range and pest status than the previous edition. Short introductory sections on insect biology, principles of control and concepts of pest status evaluation have also been added. This handy pocket guide is designed to complement the more comprehensive book Insects of Stored Productsalso by David Rees. Features * A unique colour illustrated pocket guide to pests of durable stored food and fiber commodities * Each species illustrated with concise information on distribution, host range * In this new updated edition additional species have been added to give it a worldwide coverage * Additional information also provided in this edition on control, host range, biology, distribution and pest status of covered species
Farmers' Bulletin
Author: Molecular Approaches to Increasing Resistance of Wheat (Triticum Aestivum L.) Towards Two Insect Pests ; Cereal Aphid (Sitobion Avenae F.) and Wheat Bulb Fly (Delia Coarctata Fallen).
Author: Prashant Shivasharan PyatiPublisher:
ISBN:
Category : Wheat
Languages : en
Pages :
Book Description
Cereal aphid (Sitobion avenae) and wheat bulb fly (Delia coarctata) are serious pests of wheat in the UK. At the present, chemical pesticides are used to control these insects, but they are limited in effectiveness, and have undersirable ecological impacts. There is a need to improve wheat genetically to be resistant to such inset pests. The objectives of this work were to investigate digestive biochemistry in the selected insect pests of wheat, and to determine effects of potential endogenous resistance factors in wheat on digestion, nutrition and other insect metabolic processes. The aim was to develop new strategies for crop protection. Digestive biochemistry in S. avenae and D. coarctata was studied to characterise gut proteases and their inhibition by host plant proteinase inhibitors (PIs). Investigation of proteolytic digestion in S. avenae gut showed that in spite of being a phloem-feeding insect, cereal aphid could digest ingested protein, using cysteine proteases. D. coarctata larvae contained mainly serine protease activity. A serine protease (DcSP) and a cysteine protease (DcCathL) from D. coarctata gut tissue were expressed as recombinant proteins. Only DcCathL was recovered in active form. DcCathL was insecticidal to Mamestra brassicae when injected into hemolymph, causing systemic and extensive melanisation. DcCathL selectively degraded recombinant serpins from M. brassicae in in vitro assays, and is suggested to interfere with regulation of the proteolytic cascade leading to phenoloxidase activation and melanin production in vivo. DcCathL has potential as a biopesticide if it could be made effective when orally delivered. A cationic amino acid transporter from D. coarctata gut (DcCAAT) was also cloned as a target for RNA interference. Potential resistance factors in wheat were characterised by expression as recombinant proteins. Two PIs from wheat (subtilisin/chymotrypsin inhibitor; WSCI, and cysteine proteinase inhibitor; WCPI) were expressed in the yeast Pichia pastoris, and purified. WSCI inhibited gut protease activity of both insects in in vitro and in vivo assays, whereas WCPI only inhibited S. avenae gut extract activity. On feeding, WSCI was antimetabolic to both insects, affecting both survival and growth, whereas WCPI was antimetabolic to S. avenae only. Wheat Hessian fly responsive (Hfr) genes are up-regulated in response to herbivory by Hessian fly (Mayetiola destructor). The protein product Hfr-3 was expressed and purified, and showed antimetabolic effects on survival and growth of both S. avenae and D. coarctata. Both accumulated and induced defence proteins, like WSCI, WCPI and Hfr-3, have the potential to act as endogenous resistance factors in wheat towards a range of insect pests. Developing a wheat variety constitutively expressing these defence proteins by using traditional breeding methods and/or modern biotechnological tools is discussed.
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