Progress 09/30/13 to 09/29/17
Outputs
Target Audience:academic scientists and state weed and pest employees (land managers) Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest?Presentations were given to state weed and pest employees at an annual meeting and Experiment Station Field Days. What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
Objective 6. Evaluate natural enemy efficacy and study ecological/physiological bais for interactions. Jabbour collaborated with Tatyana Rand (USDA-ARS) and colleagues to survey for the presence and activity level of a previously released parasitic wasp targeted against alfalfa weevil in Montana, Wyoming, and South Dakota. No parasitoids were found from any sampling sites, suggesting failure of this species to persist in our region. This finding contributes to understanding the lack of widespread biological control of alfalfa weevil in the West, a continued major pest problem for producers. Collier collaborated with state and federal personnel to assess impact of biological control agents targeting two invasive plant species (Russian knapweed and Dalmatian toadflax) in Wyoming. In addition, surveys were conducted to assess the impact of natural enemies of agricultural pests (Lygus bugs) in NE Wyoming alfalfa fields. Results so far suggest limited impacts, though additional data is needed.
Publications
- Type:
Journal Articles
Status:
Published
Year Published:
2017
Citation:
Pellissier, M.E., Nelson, Z*. Jabbour, R. 2017. Ecology and management of the alfalfa weevil (Coleoptera: Curculionidae) in Western United States alfalfa. Journal of Integrated Pest Management 8: 1-7.
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2017
Citation:
Pellissier, M., Jabbour, R. 2017. Floral habitat effects on parasitoid diversity and community composition adjacent to alfalfa. Entomological Society of America Annual Meeting, Denver, CO. November.
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2017
Citation:
Carabajal, S., Jabbour, R. 2017. Ground beetle seed preference in semi-arid cover crops. Entomological Society of America Annual Meeting, Denver, CO. November.
- Type:
Conference Papers and Presentations
Status:
Other
Year Published:
2017
Citation:
Timothy Collier. 2017. Update on Biological Control Implementation and Research in Wyoming. Annual Wyoming Weed and Pest Fall Conference.
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Progress 10/01/15 to 09/30/16
Outputs
Target Audience:State Weed Managers, Agricultural Producers Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest?Collier: An outreach presentation about the impacts of biological control of Rhaponticum (=Acroptilon) repens was given at a state weed manager meeting. Jabbour presentedthree outreach talks about ecological pest management, with an emphasis on biological control. What do you plan to do during the next reporting period to accomplish the goals?Collier plans to make additional releases of agents, visit sites where releases were made in previous years to check for establishment of agents, and continue to monitor a release site in central Wyoming. Jabbour will collect data on ground beetles in experimental plots.
Impacts
What was accomplished under these goals?
Goal A: Import and Establish Effective Natural Enemies (Classical Biological Control) Objective 5. Release, establish and redistribute natural enemies. Collier released agents of Rhaponticum (=Acroptilon) repens at four sites in Wyoming; three sites received Aulacidea acroptilonica and one site received Jaapiella ivannikovi. Collier also confirmed establishment of A. acroptilonica at a previous release site in western Wyoming. Objective 13. Evaluate the environmental and economic impacts of biological control agents. Collier continued ongoing monitoring of a population of Jaapiella ivannikovi, a gall-forming biological control agent for Rhaponticum (Acroptilon repens). In 2016, the percentage of shoots attacked had reached about 30%. Shoot density has stayed about the same.Impacts of J. ivannikovi therefore appear to be relatively low 7 years post release. Jabbour started a new research project evaluating the effects of interseeded cover crops in standing corn on ground beetles and weed seed predation by ground beetles. Objective 14. Develop and implement outreach activities for biological control programs. Collier: An outreach presentation about the impacts of biological control of Rhaponticum (=Acroptilon) repens was given at a state weed manager meeting. Jabbour presented threeoutreach talks about ecological pest management, with an emphasis on biological control.
Publications
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Progress 10/01/14 to 09/30/15
Outputs
Target Audience:scientists working in biological control, weed managers, agricultural producers Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest?Collier gave a presentation about Russian knapweed biological control which was presented to stakeholders (State Weed Managers in Wyoming). Jabbour created three outreach documents about pest management in alfalfa. What do you plan to do during the next reporting period to accomplish the goals?Additional releases of Russian knapweed biological control agents will be conducted and further monitoring will be conducted to evaluate impact of biological control (Collier). Alfalfa fields will be surveyed for pests and their natural enemies (Jabbour).
Impacts
What was accomplished under these goals?
Objective 5. Agents of Rhaponticum (=Acroptilon) repens were released at four sites in Wyoming; two sites each for Aulacidea acroptilonica and Jaapiella ivannikovi, respectively. Establishment of A. acroptilonica from previous releases was confirmed at four of five release sites. Objective 6. Ongoing monitoring of a population of Jaapiella ivannikovi, a gall-forming biological control agent for Rhaponticum (Acroptilon repens), has allowed the assessment of two measures of impact on the target weed: the percentage of Rhaponticum shoots galled, and the density of Rhaponticum shoots. In 2015, the percentage of shoots attacked had reached about 14%. Shoot density has increased. Impacts of J. ivannikovi are still relatively low. Objective 6. We surveyed seed and hay alfalfa fields in two regions of Wyoming to learn how local and landscape factors predict pest and natural enemy densities and activity, documenting parasitism of both alfalfa weevil and Lygus bug. We conducted experiments to measure abundance of pest and natural enemy insects in flower strips in southeastern Wyoming to determine whether such habitats could enhance biological control in alfalfa cropping systems.
Publications
- Type:
Journal Articles
Status:
Published
Year Published:
2015
Citation:
Meyers, K., N. Pieropan and T. Collier. 2015. Monitoring of a gall midge population on Russian knapweed (Acroptilon repens). Invasive Plant Science and Management 8: 409-414.
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Progress 10/01/13 to 09/30/14
Outputs
Target Audience: The target audience consists of scientists, land managers and agricultural producers interested in biological control as a pest management approach. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest? Presentations were given to pest managers and other research scientists (see Products). What do you plan to do during the next reporting period to accomplish the goals? Future activities will include further surveys of natural enemy communities of alfalfa weevil across more sites in Wyoming (Jabbour) and additional releases of natural enemies of Russian knapweed as well as surveys of previous release sites of Russian knapweed biological control agents (Collier).
Impacts
What was accomplished under these goals?
Research activities in Wyoming in 2014 fell under three objectives of the W3185 Multistate Research Project: (a) Release, establish and redistribute natural enemies (Objective 5), (b) Characterize and identify pest and natural enemy communities and their interactions (Objective 7) and (c) Develop and implement outreach activities for biological control programs (Objective 14). W3185 project member Collier released, established and re-distributed new biological control agents for Russian knapweed. New releases were made at 12 sites in seven Wyoming Counties. Establishment from releases in 2013 was confirmed at six of six release sites in four Wyoming Counties. W3185 project member Jabbour characterized natural enemy communities in two pest management systems: alfalfa, specifically focusing on alfalfa weevil, and wheat, specifically focusing on wheat stem sawfly. Cropping fields were surveyed in southeastern Wyoming to determine whether any parasitoids of the major pests wheat stem sawfly and alfalfa weevil were present. Based on these efforts, parasitoids of alfalfa weevil were detected in all fields sampled, but parasitoids of sawfly were found in none of the wheat fields. Jabbour also conducted focus groups with Wyoming alfalfa producers to learn more about their pest management approaches, including biological control.
Publications
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Progress 09/30/13 to 09/30/13
Outputs
Target Audience: The target audience was scientists, weed managers and land owners with interests in invasive weed and pest management. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided? Weed managers were trained in how to implement natural enemy releases for Russian knapweed management. How have the results been disseminated to communities of interest? Two talks were given to raise publicawareness of the potential ofnatural enemies to manage Russian knapweed. What do you plan to do during the next reporting period to accomplish the goals? Releases of natural enemies will be made at additional sites; cooperators will be trained in the process of releases as well as monitoring the outcome of releases; talks will be given on the effectiveness of releases. Research will be conducted on efficacy of natural enemies.
Impacts
What was accomplished under these goals?
1. Goal A, Objective 5--Release, establish and redistribute natural enemies. Accomplishment: Natural enemies of an invasive plant, Russian knapweed, were released at four sites in Wyoming. 2. Goal D, Objective 14--Develop and implement outreach activities for biological control programs. Accomplishment: Two talks were given to raise publicawareness of the potential ofnatural enemies to manage Russian knapweed.
Publications
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