Management Of Insceticide Resistance In Alfalfa Weevil
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Management Of Insecticide Resistance In Alfalfa Weevil For The Intermountain West
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Author : Jeremiah Vardiman
language : en
Publisher:
Release Date : 2022
Management Of Insecticide Resistance In Alfalfa Weevil For The Intermountain West written by Jeremiah Vardiman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Alfalfa categories.
Resistance to pyrethroid insecticides has been identified in alfalfa weevil populations in Montana and Wyoming, with suspected insecticide resistance situations in Utah. The best strategy for delaying and combating resistance is integrated pest management, which relies on a solid pest monitoring program.
Management Of Insceticide Resistance In Alfalfa Weevil
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Author : University of Wyoming. Extension
language : en
Publisher:
Release Date : 2022
Management Of Insceticide Resistance In Alfalfa Weevil written by University of Wyoming. Extension and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Agricultural pests categories.
Resistance to pyrethroid insecticides has been identified in alfalfa weevil populations in Montana and Wyoming, with suspected insecticide resistance situations in Utah. ... The best strategy for delaying "and combating resistance is intergrated pest management, which relies on a solid pest monitoring program." -- cover
Examining Non Chemical Methods Of Alfalfa Weevil Management Across The Intermountain West
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Author : Judith S. Herreid
language : en
Publisher:
Release Date : 2023
Examining Non Chemical Methods Of Alfalfa Weevil Management Across The Intermountain West written by Judith S. Herreid and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with Alfalfa categories.
Alfalfa weevil (Hypera postica Gyllenhal) is a pest of alfalfa (Medicago sativa L.). Insecticides are the primary method of weevil control but with increasing insecticide resistance, alternative non-chemical methods are critical for future management. Multiple studies were conducted to explore two alternative methods: early harvest and biological control. Early harvest is a mechanical method of control where recommendations are vague and previous work is insufficient for improving recommendations. One study based in Wyoming and one spanning multiple states in the Intermountain West was conducted to 1) evaluate how early harvest compares to insecticides and 2) impacts both alfalfa weevil populations and their natural enemies. Biocontrol is another promising alternative method of alfalfa weevil control. Bathyplectes curculionis (Thomson) is an imported European parasitoid that is commonly collected in the Intermountain West but does not adequately manage weevils. It remains largely unknown why B. curculionis is not more successful, but they are documented to host both native and introduced hyperparasitoids. Hyperparasitoids potentially impact B. curculionis survivorship, but this remains largely understudied. Through sampling efforts across the Intermountain West, we quantified hyperparasitoid parasitism in the region within alfalfa-alfalfa weevil systems and explored the interaction between B. curculionis and hyperparasitoids. Through our efforts, we determined early harvest is an effective method of weevil control comparable to insecticide use. Multiple hyperparasitoid species were found consistently across the region but their impact on B. curculionis biocontrol remains unclear. This combined early harvest and biocontrol work will support IPM recommendations to growers and increase alfalfa production sustainability.
The Alfalfa Weevil
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Author :
language : en
Publisher:
Release Date : 1956
The Alfalfa Weevil written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1956 with Alfalfa weevil categories.
Monitoring Insect Diversity And Parasitism Levels In Alfalfa Seed Production Fields In Western Canada
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Author : Michelle Reid (Student at University of Alberta)
language : en
Publisher:
Release Date : 2022
Monitoring Insect Diversity And Parasitism Levels In Alfalfa Seed Production Fields In Western Canada written by Michelle Reid (Student at University of Alberta) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Alfalfa categories.
Alfalfa, Medicago sativa (L.) (Fabales: Fabaceae), is an excellent source of high protein feed for livestock. Canada is the second largest producer of alfalfa seed (4.2 M kg/year) in the world, with the vast majority of production concentrated in the province of Alberta. The productivity of these fields is threatened by an invasive insect, the alfalfa weevil, Hypera postica (Gyllenhal) (Coleoptera: Curculionidae) as well as a myriad of other potential insect pests. Recently, insecticide resistance was confirmed in several alfalfa weevil populations in Alberta, and few other management options exist. Many natural enemies of alfalfa insect pests are present in Alberta, including biological control agents of alfalfa weevil, Bathyplectes curculionis (Thomson) (Hymenoptera: Ichneumonidae) and Oomyzus incertus (Ratzeburg) (Hymenoptera: Eulophidae); however, the distribution of these species and their parasitism levels are currently unknown. Here, we assessed the current diversity and distribution of insects in alfalfa seed production fields, with special emphasis on parasitism levels of B. curculionis and O. incertus throughout southern Alberta. A survey was conducted to collect insects, including alfalfa weevil larvae, from seed production fields in 2020 and 2021. During this survey, insect collections were taken from fields at three crop stages: bud, flower and seed, these insects were sorted to guild (pest of alfalfa or natural enemy of pests) and identified to genus and species. In addition, alfalfa weevil larval samples were collected weekly from the end of May to the beginning of July to assess the activity period of these parasitoids, finding parasitism activity throughout the month of June and into July. Parasitism levels based on the multiplex PCR assay were comparable to live rearing and ranged from 0-90% across sites. Assessing when and where these parasitoids occur, as well has how the two guilds interact will allow growers to better utilize these biological control agents and, ultimately, reduce spray applications.
New Directions In Pest Management
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Author : Judith Anne Hough
language : en
Publisher:
Release Date : 1978
New Directions In Pest Management written by Judith Anne Hough and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Insect pests categories.
Managing The Alfalfa Weevil
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Author : Steve Danielson
language : en
Publisher:
Release Date : 1994
Managing The Alfalfa Weevil written by Steve Danielson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Alfalfa categories.
The identification and life cycle of the alfalfa weevil are discussed along with scouting techniques, economic thresholds, and other integrated pest management tactics.
Introduction To Insect Pest Management
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Author : Robert L. Metcalf
language : en
Publisher: John Wiley & Sons
Release Date : 1994-07-27
Introduction To Insect Pest Management written by Robert L. Metcalf and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-07-27 with Technology & Engineering categories.
Contributed papers by experts in the field detail how to put integrated pest management to work. Presents the philosophy and practice, ecological and economic background as well as strategies and techniques including not only the use of chemical pesticides but also biological, genetic and cultural methods to manage the harm done by insect pests. Covers such key crops as cotton, corn, apples and forage. This edition reports important advances of the last decade including an increased environmental and ecological awareness and a trend toward lower chemical pesticide use.
Insect Pest Management Guide
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Author :
language : en
Publisher:
Release Date : 1991
Insect Pest Management Guide written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Field crops categories.
1969 Insecticide Performance Test For Alfalfa Weevil And Meadow Spittlebug Control
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Author : Carl A. Eckelman
language : en
Publisher:
Release Date : 1970
1969 Insecticide Performance Test For Alfalfa Weevil And Meadow Spittlebug Control written by Carl A. Eckelman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Alfalfa weevil categories.