Download or read book Toxicity of Certain Organic Insecticides to Codling Moth Larvae in Laboratory Tests written by E. H. Siegler and published by . This book was released on 1939 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book TOXICITY OF CERTAIN ORGANIC INSECTICIDES TO CODLING MOTH LARVAE IN LABORATORY TESTS CLASSIC REPRINT written by E. H. SIEGLER and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toxicity of Certain Organic Insecticides to Codling Moth Larvae in Laboratory Tests by E H Siegler F Munger and L E Smith written by E. H. Siegler and published by . This book was released on 1939 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toxicity of Certain Organic Insecticides to Codling Moth Larvae in Laboratory Tests written by E. H. Siegler and published by . This book was released on 1939 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Laboratory Field Method for Testing Codling Moth Insecticides Classic Reprint written by L. F. Steiner and published by Forgotten Books. This book was released on 2017-10-29 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Laboratory-Field Method for Testing Codling Moth Insecticides For the main experiments Grimes and Jonathan trees 19 to 23 years old have been employed. Enough trees (usually 4 to 8) are employed to provide plenty of fruit for sampling. This may run up to apples on certain plots where both biological and chemical data are to be obtained. Sprays are applied with equipment and at pressures which represent average conditions for the area, and all parts of the trees are sprayed to or slightly beyond the point where run-off begins. Spraying is done by personnel of the Division of Fruit Insect Investigations, and the man in charge actively participates. Obviously, the risk of errors in mixing and of anything less than thorough Spraying (which might introduce extreme or uncontrolled variation, thereby endangering the accuracy of all biological and chemical data subsequently collected) is somewhat lessened when he does his share of the spraying. He is then better able to interpret unexpected developments, of which there are many. 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 Toxicity of Certain Organic Compounds to Young Screwworm Larvae Classic Reprint written by Roy Melvin and published by Forgotten Books. This book was released on 2017-12-13 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Toxicity of Certain Organic Compounds to Young Screwworm Larvae Heterocyclic compounds with 6-membered rings not containing sulfur: sfiacetyl-gamethyl-l,2-pyran-2, 4(3)dione (dehydroacetic acid) l 2-chloroacridone Nontoxic 06h40006h3c1nh 4-chloroacridone Nontoxic 06h40006h301nh L; -dihydroquinidine-12 carboxylic acid. 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 Detection and Characterization of Resistance to Pesticides in Codling Moth Cydia Pomonella L from Oregon written by Muhammad Arshad and published by . This book was released on 1996 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toxicological studies were carried out to evaluate the susceptibility of codling moth, Cydia pomonella L. to different insecticides. Bioassay procedures for adults and larvae were standardized in terms of posttreatment holding and temperature, age and sex of insects, insecticide formulations and selection of a reference strain. This study detected a low level of resistance to azinphosmethyl in codling moth from Oregon. The LD50 value of the most susceptible strain was 0.038 ug AI/moth, while that of the most resistant population was approximately 4.3 times higher as determined by the topical application method on pheromone traps. The adult topical bioassay using moths reared in the laboratory showed that two of the seven strains tested (Crippens and Medford) had 4-5 fold higher LD50 values than reference (Saint Cloud) strain. In the topical and residual studies with first instar larvae, similar but slightly lower differences were observed among the different populations. There was a strong indication of low levels of resistance in populations to diazinon and fenvalerate in topical tests applied to both males and females. However, there was no significant difference for carbaryl or endosulfan. Larval topical bioassays showed a significant difference only to diazinon. Correlation analysis suggests that a degree of cross-resistance exists between azinphosmethyl and diazinon and to some extent to fenvalerate. Codling moths exposed to the residues of diflubenzuron showed a maximum of 2-fold difference between the susceptible and resistant populations. The differences were visible in terms of egg hatch and first instar larval entries. The pupal and adult stages emerging from the treated apples exposed to ovipositing females showed insignificant sublethal effects. A strong positive correlation between the resistance to azinphosmethyl and resistance to diflubenzuron was noticed. Selection of codling moths for resistance to diflubenzuron for six generations in the laboratory decreased susceptibility by 5-fold. Application of synergists such as PBO and DEF, combined with azinphosmethyl and diflubenzuron, showed slightly different effects on all strains of codling moth. Use of PBO (a P-450 inhibiting compound) with azinphosmethyl and diflubenzuron did not change toxicity of either of the compounds. However, the combination of DEF (an esterase inhibiting compound) with the insecticides significantly increased the toxicity of azinphosmethyl and to some extent diflubenzuron. The maximum synergistic ratios obtained were 8 and 2 for azinphosmethyl and diflubenzuron, respectively. These results indicate a possible involvement of esterases in development of resistance in codling moth to azinphosmethyl and maybe to diflubenzuron. The optimal synergistic ratio determined on a resistant strain of codling moth to various combinations of azinphosmethyl and DEF was 1:4 (50 ppm of azinphosmethyl 200 ppm of DEF). The phytotoxicity studies on young apple trees showed that DEF should be used at or below 500 ppm to avoid phytotoxicity while maintaining effective control of codling moth with a reduced dose of azinphosmethyl.
Download or read book The National Union Catalog Pre 1956 Imprints written by and published by . This book was released on 1978 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toxicological Profile for Pyrethrins and Pyrethroids written by and published by . This book was released on 2003 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pesticide Resistance in Arthropods written by Richard Roush and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bruce E. Tabashnik and Richard T. Roush Pesticide resistance is an increasingly urgent worldwide problem. Resistance to one or more pesticides has been documented in more than 440 species of insects and mites. Resistance in vectors of human dise8se, particularly malaria-transmit ting mosquitoes, is a serious threat to public health in many nations. Agricultural productivity is jeopardized because of widespread resistance in crop and livestock pests. Serious resistance problems are also evident in pests of the urban environ ment, most notably cockroaches. Better understanding of pesticide resistance is needed to devise techniques for managing resistance (Le. , slowing, preventing, or reversing development of resistance in pests and promoting it in beneficial natural enemies). At the same time, resistance is a dramatic example of evolution. Knowledge of resistance can thus provide fundamental insights into evolution, genetics, physiology, and ecology. Resistance management can help to reduce the harmful effects of pesticides by decreasing rates of pesticide use and prolonging the efficacy of environmentally safe pesticides. In response to resistance problems, the concentration or frequency of pesticide applications is often increased. Effective resistance management would reduce this type of increased pesticide use. Improved monitoring of resis tance would also decrease the number of ineffective pesticide applications that are made when a resistance problem exists but has not been diagnosed. Resistance often leads to replacement of one pesticide with another that is more expensive and less compatible with alternative controls.
Download or read book Hayes Handbook of Pesticide Toxicology written by and published by Academic Press. This book was released on 2010-02-15 with total page 2407 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Pesticide Toxicology is a comprehensive, two-volume reference guide to the properties, effects, and regulation of pesticides that provides the latest and most complete information to researchers investigating the environmental, agricultural, veterinary, and human-health impacts of pesticide use. Written by international experts from academia, government, and the private sector, the Handbook of Pesticide Toxicology is an in-depth examination of critical issues related to the need for, use of, and nature of chemicals used in modern pest management. This updated 3e carries on the book's tradition of serving as the definitive reference on pesticide toxicology and recognizes the seminal contribution of Wayland J. Hayes, Jr., co-Editor of the first edition. - Presents a comprehensive look at all aspects of pesticide toxicology in one reference work. - Clear exposition of hazard identification and dose response relationships in each chapter featuring pesticide agents and actions - All major classes of pesticide considered - Different routes of exposure critically evaluated
Download or read book Publications written by California. Citrus Research Center and Agricultural Experiment Station, Riverside and published by . This book was released on 1949 with total page 922 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Area Wide Control of Insect Pests written by M.J.B. Vreysen and published by Springer Science & Business Media. This book was released on 2007-10-30 with total page 758 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insect pests are becoming a problem of ever-more biblical proportions. This new textbook collates a series of selected papers that attempt to address various fundamental components of area-wide insect pest control. Of special interest are the numerous papers on pilot and operational programs that pay special attention to practical problems encountered during program implementation. It’s a compilation of more than 60 papers authored by experts from more than 30 countries.
Download or read book EPA 540 9 written by and published by . This book was released on 1975-02 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Enemies written by Ann E. Hajek and published by Cambridge University Press. This book was released on 2004-02-12 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher Description
Download or read book Chemistry of Pesticides written by N. N. Melnikov and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book was originally published as a Russian edition in mid-1968. It represented the first single-volume discussion of chemical pest control and of the detailed chemistry.of all modern pesticide chemicals since D. E. H. Frear's classical book on this same subject, first published in 1942 (van No strand) with the latest (third) edition in 1955. Since 1955 many new pesti cide chemicals have achieved commercial status, and many of the older ones have been supplanted. There is no up-to-date equivalent of this present volume in the world literature, with the exception of the encyclopedic and largely biologically oriented two-volume work "Chemie der Pflanzenschutz und Schadlingsbekampfungsmittel" (R. Wegler, ed.) published by Springer Verlag in 1970. Professor Melnikov has updated the 1968 Russian edition, with emphasis on the primary Russian sources yet with excellent world wide coverage of the latest chemicals to approach field stature in modern chemical pest control, for the present translation."
Download or read book Report of the Secretary s Commission on Pesticides and Their Relationship to Environmental Health written by United States. Department of Health, Education, and Welfare. Secretary's Commission on Pesticides and Their Relationship to Environmental Health and published by . This book was released on 1969 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
