Results Of Insecticide Tests For The Control Of Codling Moth

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Results Of Insecticide Tests For The Control Of Codling Moth Season Of 1927 1931

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Author : California Spray-Chemical Corporation
language : en
Publisher:
Release Date : 1927

Results Of Insecticide Tests For The Control Of Codling Moth Season Of 1927 1931 written by California Spray-Chemical Corporation and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1927 with categories.

Results Of Insecticide Tests For The Control Of Codling Moth

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Author : W. S. Regan
language : en
Publisher:
Release Date : 1931

Results Of Insecticide Tests For The Control Of Codling Moth written by W. S. Regan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1931 with Codling moth categories.

Results Of Insecticide Tests For The Control Of Codling Moth And Observations On Codling Moth Activity In The Yakima Valley Washington

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Author : William Swift Regan
language : en
Publisher:
Release Date : 1929

Results Of Insecticide Tests For The Control Of Codling Moth And Observations On Codling Moth Activity In The Yakima Valley Washington written by William Swift Regan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1929 with categories.

Results Of Codling Moth Investigations 1940 Vol 1

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Author : Entomology and Plant Quarantine Bureau
language : en
Publisher: Forgotten Books
Release Date : 2017-11-18

Results Of Codling Moth Investigations 1940 Vol 1 written by Entomology and Plant Quarantine Bureau and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-18 with Technology & Engineering categories.

Excerpt from Results of Codling Moth Investigations, 1940, Vol. 1: Work Conducted by State Agencies and Entomological Branch, Canadian Department of Agriculture The insecticide tests for control of codling moth in 1940 were restricted to the materials and dosages listed in Table I. 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.

Results Of Codling Moth Investigations 1933

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Author :
language : en
Publisher:
Release Date : 1933

Results Of Codling Moth Investigations 1933 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1933 with Codling moth categories.

Experiments With Insecticides For Codling Moth Control

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Author : Erval Jackson Newcomer
language : en
Publisher:
Release Date : 1932

Experiments With Insecticides For Codling Moth Control written by Erval Jackson Newcomer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1932 with Agriculture categories.

Toxicity Of Certain Organic Insecticides To Codling Moth Larvae In Laboratory Tests

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Author : E. H. Siegler
language : en
Publisher:
Release Date : 1939

Toxicity Of Certain Organic Insecticides To Codling Moth Larvae In Laboratory Tests written by E. H. Siegler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1939 with Codling moth categories.

Bibliography Of The Codling Moth

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Author : Bill A. Butt
language : en
Publisher:
Release Date : 1975

Bibliography Of The Codling Moth written by Bill A. Butt and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with Codling moth categories.

Detection And Characterization Of Resistance To Pesticides In Codling Moth Cydia Pomonella L From Oregon

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Author : Muhammad Arshad
language : en
Publisher:
Release Date : 1996

Detection And Characterization Of Resistance To Pesticides In Codling Moth Cydia Pomonella L From Oregon written by Muhammad Arshad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Codling moth categories.

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.

Integration Of Microbial And Chemical Controls Against Codling Moth Cydia Pomonella L

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Author : Waheed Ibrahim Bajwa
language : en
Publisher:
Release Date : 1996

Integration Of Microbial And Chemical Controls Against Codling Moth Cydia Pomonella L written by Waheed Ibrahim Bajwa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Codling moth categories.

The feasibility of managing codling moth, Cydia pomonella (L.), with mixtures of Bacillus thuringiensis-based microbial and selected chemical insecticides was studied under laboratory and field conditions. Joint actions (synergism, additivity and antagonism) of these mixtures were determined for both egg and larval stages. Higher rates of microbial control agents (MCAs), Dipel® 2X and MVP®, combined with low to medium rates of chemical insecticides gave additive or synergistic egg and/or larval mortality. Esfenvalerate and permethrin synergised the effect of these MCAs, whereas carbaryl, azinphosmethyl, phosmet and diflubenzuron had an additive effects. For all chemical insecticides, often the interactions were better with Dipel than MVP. Generally, egg exposure to low rates of the chemical insecticides alone or in combination with MCAs, caused the larvae hatching from these eggs to be more susceptible to insecticides-MCA mixtures. Most mixtures produced better results when treated at the blackhead stage of egg development. Adult and larval exposure to sublethal rates of azinphosmethyl, phosmet, carbaryl, esfenvalerate and permethrin manifested short- and long-term effects. Adult exposure caused deleterious effects on the survival and oviposition, and the larval exposures affected survival and pupal formation. Carbaryl, esfenvalerate and permethrin affected the pupal survival and subsequent eclosion of adults. Only esfenvalerate and permethrin significantly extended the larval period and reduced pupal weight and subsequent egg deposition. The deleterious sublethal effects of pyrethroids observed in the present study may provide added control of codling moth in the field. Diflubenzuron and MCAs had neither adulticidal activity nor long-term effects on codling moth biology. Results of field efficacy tests indicate that utilization of mixtures of Dipel with low rates of pyrethroids (0.1-0.2X) or diflubenzuron (0.25-0.50X) in the codling moth management is possible and indeed might be beneficial. Dipel-diflubenzuron mixtures were only suitable when applied 3 times/generation. These mixtures were environmentally safe and did not cause any outbreak of phytophagous mites. Standard application rate (2 times/generation) and timing were found to be appropriate for Dipel-pyrethroid (esfenvalerate and permethrin) mixtures. These pyrethroids at all test rates (0.1-1.0X), applied alone or mixed with MCAs, were toxic to predatory phytoseiids, thus caused an outbreak of European red mite and yellow spider mites particularly at higher rates. However, mixtures of Dipel and 0.1X of esfenvalerate/permethrin were less disruptive than corresponding 0.2-1.0X standard rate. These mixtures were selective to most predatory insects, spiders and Zetzellia malt. Hence, use of these mixtures instead of full rate of pyrethroids may improve the prospects of biological control of insect and mite pests in apple orchards.