Download or read book Phytoseiids as Biological Control Agents of Phytophagous Mites in Washington Apple Orchards written by Rebecca Ann Schmidt-Jeffris and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The integrated mite management (IMM) program in Washington has depended on the biological control of spider mites provided by Galendromus occidentalis (Nesbitt). We explored methods of improving this program. A series of inundative releases of G. occidentalis was performed in commercial apple orchards. None of the releases increased G. occidentalis numbers or reduced pest spider mite populations. It was concluded that a cost prohibitive number of predators would be necessary to maintain pest mites below economic thresholds, emphasizing the importance of conservation biological control. Phytoseiids in apple orchards across Washington were sampled to determine diversity and elucidate factors affecting abundances. While the community was expected to be completely dominated by G. occidentalis, Amblydromella caudiglans (Schuester) was also highly abundant. G. occidentalis abundance was positively affected by conventional pesticide regimes and bifenazate use, whereas A. caudiglans was negatively affected by bifenazate and positively affected by herbicide strip weediness. This indicated that A. caudiglans was more susceptible to disruptive pesticide inputs than G. occidentalis . This was confirmed by an assay wherein several orchard pesticides caused higher mortality of A. caudiglans than G. occidentalis. The recent phase out of certain orchard pesticides may have allowed A. caudiglans to become more common. To understand the mite species complex in the absence of pesticides, an insecticide-free research orchard was monitored at regular intervals during two growing seasons. Generalist phytoseiids were more common than G. occidentalis throughout both seasons. These species were nearly dependent on Aculus schlechtendali (Nalepa) as a food source, as spider mites remained scarce. This emphasizes the role of spider mites as induced pests and suggests that in the absence of pesticide applications, a complement of generalist predators is capable of maintaining spider mite populations at very low densities. G. occidentalis was also found to be less affected by leaf surfaces than generalist phytoseiids examined in previous studies. These findings indicate that G. occidentalis is biological different from the generalist phytoseiids that may replace it as pesticide use changes. Therefore, IMM must constantly be re-evaluated in order to meet orchardists' needs.
Download or read book Biological Control of Phytophagous Mites in Apple Orchards written by Lasnier, Jacques and published by [Québec] : Saint-Laurent Vision 2000. This book was released on 2004 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Role of Amblyseius Fallacis Acarina Phytoseiidae in Michigan Apple Orchards written by Brian A. Croft and published by . This book was released on 1977 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acarology written by DE Walter and published by CSIRO PUBLISHING. This book was released on 2001-07-16 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acarology: Proceedings of the 10th International Congress is a timely overview of the current international research mites and ticks. The outcome of a conference of leading acarologists, it presents major reviews of all current areas of research including: *advances in acarine biodiversity and systematics *human and livestock diseases transmitted by ticks and other parasitic mites *interactions between mites and their food plants *mites as biological control agents *use of genetic markers in mite population studies *mites as bioindicators *ecology and biology of soil mites *mite evolutionary ecology and reproduction *advances in acarine diversity and systematics The 90 papers in the book represent some of the best research from leading international researchers from over 50 countries, and helps to establish priorities for future research. All papers have been peer reviewed and edited. Acarology is a comprehensive and important addition to the world literature on mites, and is an essential addition to all acarological and entomological reference collections.
Download or read book Trends in Acarology written by Maurice W. Sabelis and published by Springer Science & Business Media. This book was released on 2010-11-16 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mites and ticks are everywhere and acarologists go after them – some explore their bewildering diversity, others try to understand their how and why. For the past 50 years, the International Congress of Acarology has been the forum for worldwide communication on the knowledge of Acari, helping researchers and students to look beyond their disciplines. Many mites and ticks are economic factors as they are pests of agricultural, veterinary and medical importance, and several species have become model organisms in modern biology. The 96 contributions to Trends in Acarology – reflecting fields as molecular biology, biochemistry, physiology, microbiology, pathology, ecology, evolutionary biology, systematic biology, soil biology, plant protection, pest control and epidemiology – have been reviewed and carefully edited. This volume contains a wealth of new information, that may stimulate research for many years to come.
Download or read book Comparisons of Phytoseiid Predator Population in Sprayed and Unsprayed Apple Orchards in Cache Valley Utah written by Yeboa A. Dodoo and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparative study of phytoseiid populations was made of two well- cultivated and regularly sprayed apple orchards with two unsprayed orchards in Cache Valley, northern Utah. Two phytoseiid species, Typhlodromus mcgregori Chant and T. occidentalis Nesbitt were observed on the apple leaves, under the bark, and occasionally in the litter and soil. Amblyseius cucumeris (Oudemans) occurred in the soil and litter and occasionally under bark. T. mcgregori was dominant in the unsprayed orchards, and T. occidentalis in the sprayed. Of the phytophagous mites, which served as food for the phytoseiids, the two-spotted mite, Tetranychus urticae Koch was dominant. Other phytophagous mites were the brown mite, Bryobia rubrioculus (Scheuten), the European red mite, Panonychus ulmi (Koch), and the McDaniel mite, Tetranychus Mcdanieli McGregor. The study suggests Mcgregori to be a non-specific, facultative predator of phytophagous mites. Mcgregori was adversely affected by standard pesticide practices, but T. occidentalis survived in larger numbers. The phytoseiids seem well adjusted to the environment of the unsprayed orchards and to contribute to the low phytophagous mite populations in those orchards. In the sprayed orchards, the phytoseiids failed to control the high populations of phytophagous mites which developed. No statistical differences were found in the efficiencies of the mite brushing machine and Berlese funnels in removing either phytoseiid or phytophagous mites from apple leaves.
Download or read book Management of Insect Pests in Vegetable Crops written by Ramanuj Vishwakarma and published by CRC Press. This book was released on 2020-04-13 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new book on the sustainable management of insect pests in important vegetables offers valuable management strategies in detail. It focuses on eco-friendly technology and approaches to mitigating the damage caused by insect pests with special reference to newer insecticides. Chapters in the volume provide an introduction to vegetable entomology and go on to present a plethora of research on sustainable eco-friendly pest management strategies for root vegetables, spice crops, tuber crops, and more. Vegetable crops that are infested by several insect pests from the nursery to the harvesting stage cause enormous crop losses. Given that it is estimated that up to 40 percent of global crops are lost to agricultural pests each year, new research on effective management strategies is vital. The valuable information provided in this book will be very helpful for faculty and advanced-level students, scientists and researchers, policymakers, and others involved in pest management for vegetable crops.
Download or read book Conservation Biological Control written by Pedro A. Barbosa and published by Elsevier. This book was released on 1998-06-26 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a comprehensive treatment of how the principles of ecology and conservation biology can be used to maximize biological control. Conservation Biological Control presents various means to modify or manipulate the environment to enhance the activities of natural enemies of pests. It establishes a conceptual link between ecology and the agricultural use of agents for biological control, and discusses both theoretical issues as well as practical management concerns. Certain to be interesting to ecologists and entomologists, this volume will also appeal to scientists, faculty, researchers and students interested in pest management, horticulture, plant sciences, and agriculture. - Contains chapters by an international team of leading authorities - Establishes a conceptual link between ecology and the agricultural use of agents for biological control - Discusses both theoretical issues as well as practical management concerns - Provides specific examples of how conservation principles are used to maximize the biological control of pests
Download or read book Two Studies Toward Reducing Pesticide Use written by Tracy Leigh Frisch and published by . This book was released on 1988 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Use of Biological Agents in the Management of Insect Pests of Apple in Ontario written by Elmer A. C. Hagley and published by . This book was released on 1982 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agricultural Acarology written by Marjorie A. Hoy and published by CRC Press. This book was released on 2016-04-19 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by a globally prominent entomologist, Agricultural Acarology: Introduction to Integrated Mite Management provides tools for developing integrated mite management programs for agriculture, including management of plant-feeding mites, mites attacking bees and livestock, and stored products. Emphasizing the biology, ecology, behavior, and dive
Download or read book The Phytoseiidae written by Tuomas S. Kostiainen and published by . This book was released on 1996 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pesticides Documentation Bulletin written by and published by . This book was released on 1967 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biological Control of Insect and Mite Pests of Woody Landscape Plants written by Michael J. Raupp and published by . This book was released on 1993 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Orchard Pest Management written by Elizabeth Hull Beers and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book IPM System in Agriculture Cereals written by R. K. Upadhyay and published by . This book was released on 1996 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: With reference to India.
Download or read book Current and Potential Use of Phytophagous Mites as Biological Control Agent of Weeds written by Carlos Vásquez and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Current and Potential Use of Phytophagous Mites as Biological Control Agent of Weeds.
