Source: WASHINGTON STATE UNIVERSITY submitted to NRP
DEVELOPING AND DELIVERING IPM STRATEGIES TO THE RAPIDLY EXPANDING U.S. HOP INDUSTRY
Sponsoring Institution
National Institute of Food and Agriculture
Project Status
COMPLETE
Funding Source
OTHER GRANTS
Reporting Frequency
Annual
Accession No.
1011786
Grant No.
2016-70006-25834
Cumulative Award Amt.
$323,491.00
Proposal No.
2016-07626
Multistate No.
(N/A)
Project Start Date
Sep 1, 2016
Project End Date
Aug 31, 2020
Grant Year
2016
Program Code
[ARDP]- Applied Research and Development Program
Recipient Organization
WASHINGTON STATE UNIVERSITY
240 FRENCH ADMINISTRATION BLDG
PULLMAN,WA 99164-0001
Performing Department
Agricultural Research Center
Non Technical Summary
This is an Extension-led project to develop and implement IPM strategies for hop growers acrossthe United States. The hop industry has experienced rapid growth in the traditional PacificNorthwest (PNW) growing districts and in other, non-traditional growing districts, driven by thecraft brewing industry's demand for locally sourced hops. Our multi-regional IPM programaligns directly with CPPM Goals 1 (Sustainable Intensification of Agricultural Production), andalso has elements of Goals 5 (Food Safety), 6 (Education and Science Literacy), and 7 (RuralProsperity/Rural-Urban Interdependence). Guided by solid stakeholder input from the NationalPest Management Strategic Plan for Hops (2015), we will investigate (a) the "big-picture" issueof spider mites in hop; (b) factors for successful biocontrol of mites and other pests and develop action thresholds; (c) IPM strategies for emerging regions; and (d) development of phenologybasedarthropod and disease decision aids. PMSP-identified extension priorities to be addressedinclude (i) educating growers about Maximum Residue Levels and their impacts on hop exports;(ii) educating nurseries and growers about the necessity of using clean plant material, employingsanitation practices, and observing quarantines; and (iii) updating the PNW-based bilingual(English/Spanish) pocket IPM handbook and developing region-specific handbooks for emerginghop growing districts. A final objective involves project evaluation to quantify outcomes andimpacts. This proposal includes a Center of Excellence Justification.
Animal Health Component
90%
Research Effort Categories
Basic
10%
Applied
90%
Developmental
(N/A)
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
2162230113050%
2162230116050%
Knowledge Area
216 - Integrated Pest Management Systems;

Subject Of Investigation
2230 - Hops;

Field Of Science
1130 - Entomology and acarology; 1160 - Pathology;
Goals / Objectives
Research Objective 1: Investigate the big-picture issue of why spider mites have become intractable pests in hop production.Research Objective 2: Identify determinants of successful biological control for other arthropod pests and, where practicable, develop dynamic action thresholds that consider natural enemies.Extension Objective 1: Evaluate, identify, and promote best IPM strategies for major pests in emerging hop production regions.Extension Objective 2: Deliver phenology-based arthropod and disease decision aids to assist growers in all hop-growing regions with pest management timing decisions.Extension Objective 3: Educate growers in emerging growing districts regarding Maximum Residue Loads on hops and concerns regarding the potential export of the hops they grow.Extension Objective 4: Educate nurseries and growers on use of clean plant material, including knowing the source of all planting materials, the necessity of testing planting material, practicing stringent sanitation measures, observing quarantines, and methods for propagating material to avoid exacerbating diseases.Extension Objective 5: Update the PNW IPM bilingual pocket IPM handbook and develop similar regionally based pocket IPM handbooks for emerging hop growing regions.?Extension Objective 6: Conduct annual qualitative project evaluation via focus group and quantitative project evaluation via post-conference surveys to assess project outcomes and impacts.
Project Methods
Research Objective 1. Investigate the big-picture issue of why spider mites have become intractable pests in hop production..We will begin with 3 candidate growers, two in Washington and one in Michigan, and conduct a whole-farm assessment of past and present mite management practices including hop yard floor cover crop management; fertilizer use; and fungicide, insecticide/acaricide, and herbicide use.Alternate approaches to mite control will be investigated, such as simple low- or no-till hop yard floor management systems. A comprehensive cover crop study is beyond the scope of this proposal but we will evaluate the respective hop yard floor management practices and fertilizer and pesticide treatments that are applied in our grower-cooperator demonstration sites as detailed above and use the data collected in our outreach activities.Research Objective 2. Identify determinants of successful biological control for other arthropod pests and, where practicable, develop dynamic action thresholds that consider natural enemies.A damage function will be derived using historical data along with the new data generated in Research Objective 1. This database will provide an opportunity to identify factors underlying the risk of spider mite infestation of and damage to cones. Univariate and multivariate analyses will identify variables associated with outbreaks that lead to cone damage. Variables identified in the first step of the analysis will be combined into logistic regression models and assessed by typical goodness-of-fit measures. Models with reasonable predictive ability will be validated in future years in experimental plots and commercial hop yards in Washington and Michigan, as well as other states expressing an interest in participating.Extension Objective 1. Evaluate, identify, and promote best IPM strategies for major pests in emerging hop production regions.Hop growers in established, emerging and re-emerging production regions also have IPM issues unique to their regions' microclimates and pest complexes. For example, hop yield reductions from competition with weeds is one of the major issues in the re-emerging hop growing regions that tend to have significantly more spring precipitation than growing regions in the PNW. Best practices are being evaluated at MSU's Southwest Michigan Research and Extension Center, and WSU's Irrigated Agriculture Research and Extension Center including optimal timing of cultural and chemical controls.Extension Objective 2. Deliver phenology-based arthropod and disease decision aids to assist growers in all hop-growing regions with pest management timing decisions. Phenology-based decision aids play an increasingly important role in IPM systems in high value-added specialty crops such as hops. A model for hop powdery mildew has been developed for the PNW and is available online via WSU's AgWeatherNet (http://weather.wsu.edu). Models are also available for several of the caterpillar pests in the PNW. We propose to, in cooperation with stakeholders from the newer growing regions, select several key arthropod and disease pests and develop degree-day models to help track their emergence and other key life cycle stages. Correlating pest cycles with weather variables will be the first step toward developing and vetting predictive models.Commercial pheromones are available for obliquebanded leafroller, armyworms, and webworms, and European corn borer. If these pests were determined by stakeholders to be critical in their region, we can initiate a trapping program, correlate the results with degree-day data, and develop a basic predictive model. In some cases, models exist in the PNW, and could be validated for other growing regions.During the first winter of our project, Co-PDs Lizotte and Sirrine will determine, through stakeholder feedback, the main pests of interest. In consultation with PD Walsh, a plan of action will be developed based on the most efficient use of existing models and data in combination with new data. Trapping will commence in the first year's growing season and continue through the second year, with results being correlated and decision aids available by the third year.Extension Objective 3. Educate growers in emerging growing districts regarding Maximum Residue Loads on hops and concerns regarding the potential export of the hops they grow.The USHIPPC also works to "level the playing field" with regard to pesticide regulatory issues, to facilitate international hop trade. Specific projects have included efforts to include pesticide tolerances for U.S. hops in the Codex Alimentarius Commission, European Union, Japanese, and Canadian regulatory systems. HIPPC maintains an Internet-based chemical residue database and harmonization chart on the USA Hops website. These charts can prove to be somewhat overwhelming for an uninitiated new hop grower. We will work with USA Hops to make these charts more user-friendly to hop growers. Similarly we will, through established Extension practices, disseminate this outstanding resource to hop growers. These references enable growers, exporters, importers and brewers to quickly identify the registration status of various pesticides in key export markets.Extension Objective 4. Educate nurseries and growers on use of clean plant material, including knowing the source of all planting materials, the necessity of testing planting material, practicing stringent sanitation measures, observing quarantines, and methods for propagating material to avoid exacerbating diseases.Most hops are vegetatively propagated. Specific viroid and virus diseases are directly increased in vegetatively propagated plant materials.The boom in emerging hop growing regions has led to the rapid increase of interstate sales. Unfortunately, this includes interstate and international "bootlegging" of hop planting materials. Such materials frequently have not undergone screening for viral or fungal pathogens or for the presence of arthropod pests.Brochures will be created and published for distribution through established extension channels (to growers) as well as in innovative, market-driven ways. These brochures, which will detail the importance of maintaining quarantines and stringent phytosanitary practices, will also be distributed via the WSU Clean Plant Network (hard-copy brochures that can mail with plant shipments) and to the hop nursery industry (electronically, using Hop Growers of America's email list).Extension Objective 5. Update the PNW IPM bilingual pocket IPM handbook and develop similar regionally based pocket IPM handbooks for emerging hop growing regions.Recently the 3rd Edition of the Field Guide for Integrated Pest Management in Hops was completed and released (O'Neal et al. 2015). This nationwide edition was a substantial expansion over the 1st and 2nd editions, which focused specifically on the Pacific Northwest hop industry. For the 2nd Edition we also created a companion pocket-sized bilingual (English/Spanish) handbook for the PNW.Utilizing the foundational graphic design elements, extensive photo library, and organizational approach that proved successful in the first pocket guide (designed, edited, and produced by Co-PD O'Neal), the first regionally based pocket guide will focus on the Great Lakes growing region and will get underway in year 1.Extension Objective 6. Conduct annual qualitative project evaluation via focus group and quantitative project evaluation via post-conference surveys to assess project outcomes and impacts.We plan to utilize the established Hop Industry Plant Protection Committee to serve as a focus group representing hop growers, hop merchants, and craft and large brewers nationwide. Project PD Walsh will meet twice annually with HIPPC in conjunction with the Hop Research Council's winter conference and summer meeting.

Progress 09/01/16 to 08/31/20

Outputs
Target Audience:Our primary target audience throughout the four project years was United Stateshop growers. Beginning with the hop growers of the Pacific Northwest (where the majority of U.S. hop growers are located) and the Great Lakes region (the leading emerging hop growing area) in years one and two, our efforts expanded in years three and four to include hop growers throughout the U.S. and, to some extent, the world. Other target audiences included stakeholders in allied industries including brewers, distributors, analytical laboratories, nurseries, regulatory agencies, and other research and extension professionals and students. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?Opportunities included conferences, field days, in-person and virtual workshops and presentations, all of which provided training and professional development for students (undergraduate and graduate), postdoctoral researchers, research scientists, extension professionals, and hop growers. Walsh's presentations at the American Hop Convention in January reached over 600 participants in each of the project years. Walsh made presentations to the Hop Research Council, US Hop Industry Plant Protection Committee, and the hop commissions of Washington, Oregon, and Idaho. Sirrine and Lizotte organized and delivered presentations at the Great Lakes Hop and Barley Conference each March, providingtraining and professional development opportunities to GLR stakeholders as well as, increasingly, participants from Northeast and Middle Atlantic hop-growing regions (presentation venues beyond the PNW and Michigan included The Ohio State University, South Atlantic Hops Conference, Nebraska Grower & Brewer Conference, and University of Vermont). Lizotte and Sirrine also founded the Great Lakes Hop Working Group, providing a forum for the exhange of ideas and information; the working group developed an online IPM course for new hop growers.Graduate and undergraduate research assistants at Washington State University and Michigan State University participated in extension outreach and training sessions at regional and national hop meetings as well as discipline-specific meetings including those of the Entomological Society of America and American Phytopathological Society. How have the results been disseminated to communities of interest?Outreach Objectives1 (bestIPM strategies), 2 (phenology-based decision aids), and 3 (MRLs) were disseminated at the aforementioned presentations to the American Hop Convention, Great Lakes Hop and Barley Conference, and meetings of state hop commissions. Additional in-person (or online, virtual from March 2020 to end of project due to COVID) presentations were made at venues including the Craft Brewers Conference & BrewExpo America anddozens of field days. Participation in MSU's listserv and the USAHops newsletter mailing list were encouraged, and topics addressing these 3 outreach objectives, as well as Objective 4 (clean plant material) were covered in this electronic content. Additional avenues of electronic dissemination took place through formal collaboration with Hop Growers of America's website (http://usahops.org), MSU's Bine and Dine webinar series, and the MSU Extension hop e-newsletter (https://www.canr.msu.edu/hops/index).Outreach Objective 1, in particular (best IPM strategies) was addressed in part by updates to hop-related sections of the Pacific Northwest Handbooks for insect, disease, and weed management (http://pnwhandbooks.org), annual updating of MSU's Hop Management Guide. Outreach Objective 2, in particular (phenology-based decision aids) evolved through robust partnerships with WSU's AgWeatherNet (http://weather.wsu.edu) and MSU's Eviroweather (http://www.eviroweather.msu.edu).Outreach Objective 3, in particular (regarding Maximum Residue Limits and the implications for export markets) was emphasized in presentations to the US Hop Industry Plant Protection Committee and MRLs are now listed and updated regularly on the Hop MRL Tracking Chart at https://www.usahops.org/growers/clean-plants.html. See also specific publications, presentations, and other outputs listed in the Products and Other Products section of this Final Report. What do you plan to do during the next reporting period to accomplish the goals? Nothing Reported

Impacts
What was accomplished under these goals? Research Obj 1: Mite populations from the Pacific Northwest (PNW) and Great Lakes Region (GLR) were sampled and studies conducted elucidating regional differences in population fluctuations. Correlated with weather variables, these data can be extrapolated for use in management models forhop-growing regions throughout the US. Research Obj 2: Protocols were developed in consultationwith grower-cooperators and spray records were obtained (Yrs 1-2). Historical and new data were entered into a database (Yrs 2-3). Thresholds were developed taking natural enemies and their conservation into consideration (Yrs 3-4), resulting in revised IPM recommendations and practices. Extension Obj 1-3: Outreach regarding best IPM strategies (Obj 1), phenology-based decision aids (Obj 2), and MRLs (Obj 3) are detailed in the 2nd section following: How results have been disseminated to communities of interest. Extension Obj 4: To educate nurseries and growers, we began in consultation with Clean Plant Network programs for hops (nationalcleanplantnetwork.org/HOPS_CPN and cpcnw.wsu.edu). Phytosanitary protocols and observance of quarantines were emphasized in communicationwith nurseries as well as growers beginning with the PNW and GLR and expanding nationally. Printed and electronic resources were distributed, webinar presentations made, and web content updated prior to completion of Year 3. Capability for disease and virus testing has expanded and, along with the aforementioned information, continues to be available to growers and nurseries nationwide. Extension Obj 5: A pocket handbook for GLR was developed in 2018 and translated into Spanish in 2019. Content from this guide along with the original PNW IPM pocket guide was made available to other regions along with expertise from PNW and GLR communications personnel and other guides are under development. A vastly expanded update of the PNW IPM bilingual pocket guide was begun in 2019 and at this writing is undergoing translation review and final technical review with printing anticipated in December 2020. Extension Obj 6: Qualitative and quantitative outcomes were assessed in each of the 4 project years. Increases in IPM knowledge and adoption were observed and recorded in response to educational programs, electronic resources, articles, webinars, guidebooks and fact sheets. For example, a post-conference survey at the 2020 Great Lakes Hop and Barley Conference indicated that 75% of respondents will use the presented outputs to improve crop management; 70% will adopt practices or tools to increase yield, improve quality or decrease inputs; and 76% will adopt practices to manage production risks. Webinar participants indicated that 93% had increased their hop knowledgeand 83% would adopt practices or tools to increase yield, improve quality, or decrease inputs.

Publications

  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Lizotte, E M. 2020. Insect Pests of Hop. Ohio Bines to Steins Hop Conference. The Ohio State University.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Lizotte, E M. 2020. Hop IPM Update. 2020 Hop Conference. University of Vermont
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Sirrine, J R. 2020. An Introduction to Hop Production. Great Lakes Hop and Barley Conference.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Sirrine, J R. 2020. Investigating the terroir-influenced quality attributes of hops. Great Lakes Hop and Barley Conference
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Adesanya, A. W., T. D. Waters, M. D. Lavine, L. C. Lavine, D. B. Walsh & Fang Zhu. 2020. Multiple insecticide resistance in onion thrips populations from Western USA. Pesticide Biochemistry and Physiology. https://doi.org/10.1016/j.pestbp.2020.104553
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Adesanya, A. W., M. J. Beauchamp, M. D. Lavine, L. C. Lavine, Fang Zhu, & D. B. Walsh. 2020. RNA interference of NADPH-Cytochrome P450 reductase increases susceptibilities to multiple acaricides in Tetranychus urticae. Pesticide Biochemistry and Physiology. https://doi.org/10.1016/j.pestbp.2020.02.016
  • Type: Journal Articles Status: Published Year Published: 2019 Citation: Adesanya, A. W., M. J. Beauchamp, M. D. Lavine, L. C. Lavine, Fang Zhu, & D. B. Walsh. 2019 Physiological resistance alters behavioral response of Tetranychus urticae to acaricides. Scientific Reports. https://doi.org/10.1038/s41598-019-55708-4
  • Type: Journal Articles Status: Published Year Published: 2019 Citation: Barbour, J.D., D.G Alston, D.B Walsh, M. Pace, & L.M. Hanks. 2019. Mating Disruption for Managing Prionus californicus (Coleoptera: Cerambycidae) in Hop and Sweet Cherry. J. Econ Entomol. https://doi.org/10.1093/jee/toy430
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Walsh, D.B. 2020. IPM on Mites and Other Pest Arthropods in Hop. American Hop Convention. Portland, OR. January 21, 2020.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Walsh, D.B. 2020. IPM on Mites and Other Pest Arthropods in Hop. Hop Research Council and Washington Hop Commission summer meeting. Virtual. July 28, 2020.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Walsh, D.B. 2020. Integrated Pest Management of Mites and Aphids on Hops. GreenChief Growers Meeting. Virtual. May 28, 2020.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Walsh, D.B. 2020. Caterpillar (and other) Pests of Hops. GS Long Annual Meeting. Yakima, WA. January 15, 2020.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Walsh, D.B. 2020. Integrated Management of Mites on Hops. Washington Hop Industry Annual Meeting. Yakima, WA. January 10, 2020.
  • Type: Other Status: Published Year Published: 2020 Citation: Sirrine, J R., Lizotte, E., Miles, T. 2020. Michigan Hop Report. July 16, 2020. https://www.canr.msu.edu/news/michigan-hop-report-july-16-2020
  • Type: Other Status: Published Year Published: 2020 Citation: Lizotte, E. and Sirrine, J R. 2020. Michigan Hop Report. August 14, 2020. https://www.canr.msu.edu/news/michigan-hop-report-aug-14-2020
  • Type: Other Status: Published Year Published: 2020 Citation: Sirrine, J R. 2020. Hop Training. MSUE News. https://www.canr.msu.edu/news/hop_training
  • Type: Other Status: Published Year Published: 2020 Citation: Sirrine, J R. 2020. Benefits of side-disking hop rows. MSUE News. https://www.canr.msu.edu/news/benefits-of-side-disking-hop-rows
  • Type: Other Status: Published Year Published: 2020 Citation: Sirrine, J R. 2020. Pruning for disease management and yield benefits in hops. MSUE News. https://www.canr.msu.edu/news/pruning-for-disease-management-and-yield-benefits-in-hops
  • Type: Other Status: Published Year Published: 2020 Citation: Sirrine, J R. 2020. Bine and Dine! Monthly Hop Webinar Series. MSUE News. https://www.canr.msu.edu/news/bine-and-dine-monthly-hop-webinar-series-1
  • Type: Other Status: Published Year Published: 2020 Citation: Sirrine, J R. 2020. Third Annual Michigan Chinook Cup. MSUE News. https://www.canr.msu.edu/news/third-annual-michigan-chinook-cup
  • Type: Other Status: Published Year Published: 2020 Citation: Sirrine, J R. 2020. New Herbicide Registered for Hops in Michigan. MSUE News. https://www.canr.msu.edu/news/new-herbicide-registered-for-hops-in-michigan
  • Type: Other Status: Published Year Published: 2020 Citation: Sirrine, J R., Lizotte, E., DeDecker, J. 2020. Sixth Annual Great Lakes Hop and Barley Conference. MSUE News. https://www.canr.msu.edu/news/sixth-annual-great-lakes-hop-and-barley-conference
  • Type: Other Status: Published Year Published: 2020 Citation: Lizotte, E M. 2020. Managing Hop Downy Mildew in Michigan. MSUE News https://www.canr.msu.edu/news/managing-hop-downy-mildew-in-michigan
  • Type: Journal Articles Status: Published Year Published: 2020 Citation: Hatlen, R.J., Gillett, J.M., Sysak, R.W., Smith, R.L., Miles, T.D. 2020. Evaluation of fungicides for control of downy mildew in hops, 2019. Plant Disease Management Reports. 15:OT018.
  • Type: Journal Articles Status: Submitted Year Published: 2020 Citation: Henning, J.A., M.S. Townsend, D.H Gent, M. Wiseman, D. Walsh, D. Groenendale and A. Randazzo Registration of High-Yielding Aroma Hop (Humulus lupulus L.) cultivar,USDA Triumph'. Submitted. Plant Registrations, J. Crop Sci. Soc Am.
  • Type: Journal Articles Status: Accepted Year Published: 2020 Citation: Adesanya, A. W., M. J. Beauchamp, M. D. Lavine, L. C. Lavine, Fang Zhu, & D. B. Walsh. In revision. Mechanisms and management of acaricide resistance for Tetranychus urticae in agroecosystems. J Pest Sci
  • Type: Journal Articles Status: Accepted Year Published: 2020 Citation: Higgins, D., Miles, T.D., Hausbeck, M. 2020. Fungicide efficacy against Pseudoperonospora humuli and assessment of point-mutations linked to carboxylic acid amide (CAA) resistance in Michigan. Plant Disease
  • Type: Book Chapters Status: Published Year Published: 2020 Citation: Knudson, W., J R. Sirrine, Mann, J. 2020. The Geographic Dispersion of Hop Production in the United States: Back to the Future? In: M.W. Patterson and N. Hoalst Pullen (Eds.) The Geography of Beer, Vol. 2. Springer Nature.
  • Type: Journal Articles Status: Under Review Year Published: 2020 Citation: Staples, A., Malone, T. J R. Sirrine. In Review. Hopping on the Localness Craze: What Brewers Want from State-Grown Hops. Accepted with revision. Managerial and Decision Economics.
  • Type: Journal Articles Status: Under Review Year Published: 2020 Citation: Mayich, D.J., A.L. MacNeil, J R. Sirrine. In Review. Flavour First: A study of North American beer drinkers views toward proprietary hop. Submitted to: Master Brewers Technical Quarterly. April 21, 2020.
  • Type: Other Status: Published Year Published: 2020 Citation: Lizotte, E., Sirrine, R. Miles, T., Jess, L., Zandstra, B. 2020. Michigan Hop Management Guide. 37p. https://www.canr.msu.edu/resources/michigan-hop-management-guide
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Sirrine, J R. 2020. Michigan hop production. West Michigan Community College Webinar Series.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Sirrine, J R. 2020. Best Management Practices. Ohio Bines to Steins Hop Conference. The Ohio State University
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Lizotte, E M. 2020. Hop Pest Management (Introductory). Great Lakes Hop and Barley Conference.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Miles, T. 2020. Diseases of Hop Cones. Great Lakes Hop and Barley Conference.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Miles, T. 2020. Pathology Research Update: Downy Mildew and Diaporthe. Great Lakes Hop and Barley Conference.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Miles, T. 2020. Downy Mildew Management Strategies. Great Lakes Hop and Barley Conference.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2020 Citation: Lizotte, E M, Sirrine, J R, and Miles, T. 2020. Six Webinar Presentations on IPM Strategies via the Bine and Dine Webinar Series


Progress 09/01/18 to 08/31/19

Outputs
Target Audience:Our primary target audience was the growers of hops in the Pacific Northwest and Great Lakes regions, with increasing expansion to other emerging growing regions including the Eastern U.S and Midwest. As our efforts expanded in this third project year, our outreach increasingly reached hop growers nationwide (and, to some extent, worldwide). Other target audiences reached included stakeholders in allied industries including brewers, distributors, analytical laboratories, nurseries, regulatory agencies, and other researchers and extension professionals. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?Training and professional development opportunities for students and scientists included the American Hop Convention, the Great Lakes hop and Barley Conference, Great Lakes Hop Working Group meetings. Lizotte and Sirrine, along with members of the Great Lakes Hop Working group, developed anonline IPM course for new hop growers. How have the results been disseminated to communities of interest?A presentation was made to approximately 600 stakeholders (growers, brewers, other industry members) at the American Hop Convention in Monterey, CA in January 2019. Results of ongoing research in the Upper Midwest and PNW were delivered to hop growers in emerging production regions through the 2019 Great Lakes Hop and Barley Conference, the 2019 Great Lakes Hop Working Group annual meeting, printed media (e.g., pest alerts, scouting reports, an updated Hop Management Guide), and electronic platforms (e.g., MSU Extension hop e-newsletter, website http://msue.anr.msu.edu/topic/hops/pest_management as well as an in-season "Bine and Dine" six-session webinar series. Updates were made to the hop-related sections of the Pacific Northwest Insect Management Handbook, Pacific Northwest Disease Management Handbook, and Pacific Northwest Weed Management Handbook (http://pnwhandbooks.org). Information on MRL changes and harmonization has been extended to growers via the Hop Growers of America website (https://usahops.org) What do you plan to do during the next reporting period to accomplish the goals?Data to evaluate the Bine and Dine webinar series will be available in December 2019 and assessed during the next reporting period. The new online IPM course for beginning hop growers developed by Lizotte, Sirrine, and other members of the Great Lakes Hop Working Group will launch during the winter of 2019-2020. Intense downy mildew pressure has led to continued prioritization of downy research in Michigan. The demonstration project launched during this period (to evaluate and compare14- and 21-day spray intervals) on the MSU Pathology Farm will be continued in the coming reporting period to determine if growers can reduce inputs and maintain control with currently available fungicides. The demo plot will also contribute to creating efficacy data and sample spray programs that can be utilized by growers and will be incorporated into the MSU Hop Management Guide and other outreach modalities in the next reporting period.

Impacts
What was accomplished under these goals? Research Obj. 1: At the close of the reporting period, Michigan State University (MSU)had submitted 5 mite populations to Washington State University (WSU) with plans to submit 5 more after harvest completion. Mite pressure was low in 2019 in the Great Lakes Region growing areasdue to long periods of cool and wet weather in the spring.WSU had ample might populations from the Pacific Northwest (PNW) and studies are ongoing. Extension Obj. 1: The Great Lakes Hop and Barley Conference (GLHBC)was held Feb 28-Mar 1 and attracted 145 participants from the upper midwest and northeastern US. Lizotte, Sirrine, and Walsh all presented. Participants surveyed (n=70) indiated that 80% would adopt practices or tools to increase yield, improve quality, or decrease inputs and 76% would adopt practices to manage production risks. The "Bine and Dine" webinar series drew 281 unique participants. Extension Obj. 2: MSU Enviroweather staff (http://www.enviroweather.msu.edu) worked with Lizotte and Sirrine to determine if the downy mildew or powdery mildew models developed in the PNW would be helpful to growers in the Great Lakes region. A development version of the powdery mildew model was launched in Michigan. The team determined that, due to the very low incidence of powdery mildew in the region to date, that the model would have limited value for growers. Conversely, the downy mildew model could be useful, but given the humidity, rain, and temperatures in the region, the model predicts high-risk level all season long, therefore not substantially altering current preventative fungicide application. Extension Obj. 3: While this objective was completed during the previous reporting period (within the original project timeline), it remains an ongoing objective due to the nature of changing and/or new maxiumum residue limits/loads (MRLs). The US Hop Industry Plant Protection Committee maintains a comprehensive MRL tracking chart that is updated monthly, and WSU and MSU provide their respective region's growers with this invormation through list servs, social media, web links, and at conferences and workshops. Extension Obj. 4: Primarily completed in the previous reporting period, but outreach is ongoing. This topic was discussed at the American Hop Convension in January, theGLHBC in March 2019 and at the Great Lakes Hop Working Group meeting in July. MSU Plant Pathologist Dr. Tim Miles discussed the topic during multiple presentations in this reporting period.

Publications

  • Type: Journal Articles Status: Published Year Published: 2018 Citation: Wu M, Adesanya AW, Morales MA, Walsh D, Lavine L, Lavine M, Zhu F. 2018 Multiple acaricides resistance and underlying mechanisms in Tetranychus urticae on hops. J.Pest Sci. https://doi.org/10.1007/s10340-018-1050-5
  • Type: Journal Articles Status: Published Year Published: 2018 Citation: Adesanya, A.W., E. Franco, D.B. Walsh, L.C. Lavine, M.D. Lavine, & F. Zhu. 2018 Phenotypic and Genotypic Plasticity of Acaricide Resistance in Populations of Tetranychus urticae (Acari: Tetranychidae) on Peppermint and Silage Corn in the Pacific Northwest. J. Econ. Entomol. https://doi.org/10.1093/jee/toy303
  • Type: Other Status: Published Year Published: 2019 Citation: Lizotte, E., Sirrine, R. Jess, L. 2019. Michigan Hop Management Guide. Michigan State University News.
  • Type: Other Status: Published Year Published: 2019 Citation: Lizotte, E. August 2019. Pest alert: European corn borer in Michigan hop. Michigan State University News.
  • Type: Other Status: Published Year Published: 2019 Citation: Lizotte, E. July 2019. Michigan hop scouting report  July 25, 2019. Michigan State University News.
  • Type: Other Status: Published Year Published: 2019 Citation: Lizotte, E. May 2019. Michigan hop scouting report - May 20, 2019. Michigan State University News.
  • Type: Other Status: Published Year Published: 2019 Citation: Lizotte, E. April 2019. Managing hop powdery mildew in Michigan. Michigan State University News.
  • Type: Other Status: Published Year Published: 2019 Citation: Lizotte, E. April 2019. Managing hop downy mildew in Michigan. Michigan State University News.
  • Type: Other Status: Published Year Published: 2019 Citation: Michigan State University Extension News: Hops, 2020 Great Lakes Hop & Barley Conference, June 27, 2019, https://www.canr.msu.edu/news/2020-great-lakes-hop-barley-conference
  • Type: Other Status: Published Year Published: 2019 Citation: Michigan State University Extension News: Hops, Benefits of side-disking hop rows, June 26, 2019, https://www.canr.msu.edu/news/benefits-of-side-disking-hop-rows
  • Type: Other Status: Published Year Published: 2019 Citation: Michigan State University Extension News: Hops, American Hop Convention 2020, June 26, 2019, https://www.canr.msu.edu/news/american-hop-convention-2020
  • Type: Books Status: Published Year Published: 2019 Citation: Lizotte, E. et. al. 2019. Exploraci�n del l�pulo Gu�a de bolsillo para la regi�n superior del Medio Oeste y el Noreste de Estados Unidos y del Este de Canad�. Michigan State University Extension bulletin E3348.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Lizotte, Erin. 2019. Introduction to Hop Production. 2019 Great Lakes Hop and Barley Conference. February 28-March 1, 2019.
  • Type: Other Status: Published Year Published: 2019 Citation: Michigan State University Extension News: Hops, Second annual Chinook Cup awarded, March 11, 2019, https://www.canr.msu.edu/news/second-annual-chinook-cup-awarded
  • Type: Other Status: Published Year Published: 2019 Citation: Michigan State University Extension News: Hops, International Hop Growers Convention announces 57th Congress, March 7, 2019, https://www.canr.msu.edu/news/international-hop-growers-convention-announces-57th-congress-july-29-august-5-2019
  • Type: Journal Articles Status: Published Year Published: 2019 Citation: Miller, S.R., J R. Sirrine, A. McFarland, P. Howard, T. Malone. 2019. Craft beer as a means of economic development: An economic impact analysis of the Michigan value chain. Beverages. 5(2): 35; https://doi.org/10.3390/beverages5020035
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Lizotte, Erin. 2019. Controlling Diseases on Hops. 2019 South Atlantic Hops Conference. March 16, 2019.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Lizotte, Erin. 2019. Controlling Insect Pests on Hops. 2019 South Atlantic Hops Conference. March 16, 2019.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Lizotte, Erin. 2019. Downy & Powdery Mildew Management. 2019 Nebraska Grower and Brewer Conference & Trade Show. January 13-14, 2019.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Sirrine, J R. 2019. An introduction to hop production. Great Lakes Hop & Barley Conference, Traverse City, MI.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Sirrine, J R. 2019. Hop soil & nutrient management. Nebraska Grower & Brewer Conference. Lincoln, NE.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Sirrine, J R. 2019. Hop harvest timing. Nebraska Grower & Brewer Conference. Lincoln, NE.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Sirrine, J R. 2019. State of the Michigan hop industry. MI Brewers Guild Annual Conference. Kalamazoo, MI.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Sirrine, J R. 2019. Keynote Presentation: Growing the Michigan Hop Industry: Lessons learned. 2019 South Atlantic Hops Conference. Asheville, N.C.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Sirrine, J R. and J. Dick. 2019. Handling hops after harvest. 2019 South Atlantic Hops Conference. Asheville, N.C.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Sirrine, J R. 2019. An Introduction to hop production. Grow Benzie Specialty Crop Speaker Series. Benzonia, MI.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Walsh, D. 2019. 2018 Integrated Pest Management of Arthropods on Hop. American Hop Convention. January 24, 1029.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Walsh, D. 2019. Update: Integrated Pest Management of Arthropods on Hop. Idaho Hop Commission. March 7, 2019.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Walsh, D. 2019. Update: Integrated Pest Management of Arthropods on Hop. Washington Hop Commission, Yakima, WA. March 19, 2019.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Walsh, D. 2019. Update: Integrated Pest Management of Arthropods on Hop. Oregon Hop Commission, Corvallis, OR. March 21, 2019.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Walsh, D. 2019. Update: Integrated Pest Management of Arthropods on Hop. Washington Hop Commission, Prosser, WA. July 2, 2019.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2019 Citation: Walsh, D. 2019. Update: Integrated Pest Management of Arthropods on Hop. Hop Growers of America and Hop Research Council, Boise, ID. July 16-18, 2019.


Progress 09/01/17 to 08/31/18

Outputs
Target Audience:Growers of hops in rapidly expanding (emerging and re-emerging) production regions including the Great Lakes/Upper Midwest and the Eastern U.S., as well as those in the primary hop-growing region of the Pacific Northwest. Also stakeholders in allied industries including nurseries, distributors, analytical laboratories, and brewing facilities. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?Audiences of hop growers, students, researchers, and stakeholders in allied industries were reached via presentations at field days, workshops, commission meetings, and conferences, including the American Hop Convention, Great Lakes Hop and Barley Conference, University of Vermont Hop Conference, Brewers Association Conference, and Entomological Society of America. Graduate and undergraduate students participated in the project to varying degrees, most notably Washington State UniversityPhD candidate Adekunle Adesanya, who presented multiple conference papers on hops in 2018. Dr. Walsh presented a class to students and professionals in Bejing, China, during this reporting period. Presentations by O'Neal and Sirrine reached over 600 attendees at the USAHops/American Hop Convention in Palm Desert, CA in January 2018.PD Sirrine hosted Iowa State University professors and hop producers for a tour of Michigan hopyards, where IPM best management practiced were discussed.PDs Lizotte and Sirrine also held 3, on-farm IPM updates for hop growers in 2018 which drew 53 participants from around the state. During year 2, PD Lizotte provided disease management seminars as requested for a group of MI cooperative growers (n=30), Vermont growers (n=15) and the Minnesota Hop Growers Association (n=60). PD Sirrine participated in the HGA Best Practices Advisory Council meeting at the American Hop Convention. PD Sirrine presented at the University of Vermont Northeast Hop Conference with over 100 in attendance and Hop Growers of Michigan/Mr. Wizard's Farm Field day with 60+ in attendance.? How have the results been disseminated to communities of interest?See the "opportunities for training and professional development" statement as well as the many papers, Extension bulletins, fact sheets, and other outreach items and activities listed under "Products" and "Other Products" in this report. Team members also responded to numerous in-person, electronic, and telephone requests for information from target audience members. The English-language version of theHop Scouting Pocket Guide for the U.S. Upper Midwest and Northeast and Eastern Canada,developed in Year 1, continues to be distributed and is well-received by the target audiences. MSU developed an online Hop IPM Module; to date 69 users have completed the course with 82% reporting that they will implement specific IPM practices as a result of the course. MSU Co-PIs organized the Great Lakes Hop and Barley Conference and reached 203 participants. Post-conference surveying indicated the following intent to practice specific IPM tactics: scout for pest insects and diseases (81%); scout for beneficial insects (81%); better manage for pests (85%); select pest resistant varieties or cultivars (35%); improve weed control strategies (85%); improve sanitation practices (50%); protect native pollinators (58%). What do you plan to do during the next reporting period to accomplish the goals?Field data will be collected and data from all 3 years analyzed toward finalizing Research Objectives (RO) 1 and 2. Extension Objective (EO) 1 is going very well and efforts will continue in a similar fashion in the next reporting period (Year 3). Building on the findings from year 2, PDs will collaborate with the MSU Eviroweather team to evaluate the (poor-fit) PNW forecasting models for downy and powdery mildew, testing the models' reaction to historical 2018 weather data in pursuit of EO2.If there is evidence of enough nuance in the model to modify grower management on farm, the model will be field tested in year 3 of the project.EO3 and EO4 outreachwill continue, with updates to the MRL website as needed and additional presentations on export issues (EO3) and plant sanitation (EO4)at meetings and in newsletter articles. The Spanish-language version of theHop Scouting Pocket Guide for the U.S. Upper Midwest and Northeast and Eastern Canadawill be completed and distributed. The bilingual (English/Spanish)Field Guide for Integrated Pest Management in Hops: Pocket Version(with an emphasis on Pacific Northwest hops) will be revised. On all EO1-EO5 topics, presentations will take place at national and regional hop and brewing conferences and reports will be made to hop commissions. For EO6, specific to year 3 are the hop grower surveys that will assess the impacts and outcomes of our project.

Impacts
What was accomplished under these goals? RO1:Field data collection is on schedule in the Pacific Northwest (PNW). Michigan (MSU) lost its field tech in year 1, so field data planned for years 1 & 2 has shifted to years 2 & 3 and this is on schedule. RO2:Mite and aphid pressure was measured at regular intervals in multiple locations in PNW and Midwest locations. Beneficial arthropods were also sampled and quantified. Data have been shared among the Co-PIs. EO1:A great deal was accomplished under this objective. See Conference Papers & Presentions as well as "Other" (primarily fact sheets, web content, Extension bulletins, newsletter articles)under"Products." See also specific activities listed under "opportunities for training and professional development" and "results disseminated to communities of interest" for specific activities promoting best IPM strategies. EO2:Powdery and downy mildew models from the PNW were vetted for Midwest application. Initial review of the parameters deems it likely that Midwest weather will trigger the models too often to result in valid decision-making tools. See notes under "next reporting period" plans for next steps. MSU continues to monitor region-specific (i.e., non-PNW) pests oblique-banded leafroller and European corn borer, with plans to update the current seasonal pest calendar based on emergence and senescence data from years 2 & 3. EO3:PI Walsh has worked with Hop Growers of America, Hop Research Council, and US Hop Industry Plant Protection Committee to maintain updated MRL information and provide multiple venues for growers to access this information. MRLs are now listed and updated regularly at https://www.usahops.org/growers/clean-plants.html under a link "Hop MRL Tracking Chart."All Co-PIs worked during this reporting period to emphasize MRLs and export issues in general to a variety of audiences including regional hop grower meetings, hop commission meetings, and national hop and brewing conferences. Listservs have been utilized as well as newsletter articles. EO4:Clean Plant Network services, acquisition and use of clean planting materials, use of sanitation measures, and observance of quarantines has been emphasized at every presentation during the project year. Pacific Northwest phytosanitary protocols have been shared with Midwest growers and are being adopted. The Great Lakes Hop and Barley Conference held in March 2018 in Kalamazoo, MI hosted Dr. David Gent to discuss the importance of clean planting materials as well as the likely sources of widespread powdery and downy infections over the past years. An introductory course for growers emphasized strategies to help mitigate the risk of accepting unhealthy plant material. Lizotte also delivered a Hop Virus presentation to Vermont growers via a webinar and in-person at the Minnesota Hop Growers 2018 Association meeting. These presentation focused heavily on the importance of sourcing clean plant material, how to evaluate plant health upon delivery and field practices to limit the spread of virus within and between yards. PD Sirrine was an invited participant for the Clean Plant Network Propagation Standards advisory council meeting at the American Hop Convention (January 2018), collaborated on a science-based quarantine article with Dr. Gent and the Michigan Department of Agriculture and Rural Development for inclusion in the Hop Growers of Michigan quarterly newsletter and the MSU Extension Webpage. (Dr. Gent publication:https://www.usahops.org/growers/clean-plants.html). Drs. Lizotte and Sirrine hosted the Great Lakes Hop Working Group annual meeting in Michigan with 30+ members in participating. Best propagation practices were discussed in detail. EO5:The Midwest pocket guide in English (developed in year 1) continued to be distributed. A Spanish-language version has been developed and is undergoing final editing with distribution targeted to begin inearly 2019. The PNW guide update slated for year 3 is on schedule, with discussions underway of expanding the project to include development of a smartphone app as well as a printed guide based on stakeholder input. EO6:? Project evaluation surveys and analysis are on tract, as are team meetings.

Publications

  • Type: Other Status: Published Year Published: 2018 Citation: Lizotte, E. 2018. June Hop Scouting Reports. Michigan State University.
  • Type: Other Status: Published Year Published: 2018 Citation: Lizotte, E. 2018. May Hop Scouting Reports. Michigan State University.
  • Type: Other Status: Published Year Published: 2018 Citation: Lizotte, E. 2018. Hop Disease Management in Michigan for 2018. Michigan State University.
  • Type: Other Status: Published Year Published: 2018 Citation: Lizotte, E., A. McFarland, R. Sirrine. 2017. Great Lakes Hop and Barley Conference 2017 Impact Report. Michigan State University.
  • Type: Other Status: Published Year Published: 2017 Citation: Sirrine, J R. September 2017. Understanding hop reproduction and genetics can help producers improve management practices. Michigan State University Extension News. http://msue.anr.msu.edu/news/why_are_my_hops_producing_male_flowers
  • Type: Other Status: Published Year Published: 2018 Citation: Sirrine, J R. May 2018. Pruning for disease management and yield benefits. Michigan State University News. http://msue.anr.msu.edu/news/pruning_for_disease_management_and_yield_benefits
  • Type: Other Status: Published Year Published: 2018 Citation: Sirrine, J R. and Lizotte, E. August 2018. Michigan State University Hop Update. Hop Growers of Michigan Newsletter.
  • Type: Other Status: Published Year Published: 2018 Citation: Sirrine, J R., Gent. D. May 2018. Shipping of Hop Plants and Planting Material to the Pacific Northwest Prohibited by Quarantine. Michigan State University Extension News. http://msue.anr.msu.edu/news/shipping_of_hop_plants_and_planting_material_to_the_pacific_northwest_prohi
  • Type: Other Status: Published Year Published: 2018 Citation: Sirrine, J R. May 2018. Hop plant protection and maximum residue limits (MRLs): Growers need to be cognizant of MRLS to avoid export issues. Michigan State Universtiy Extension News. http://msue.anr.msu.edu/news/hop_plant_protection_and_maximum_residue_limits_mrls
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Sirrine, J R. 2017. Craft Beer Trends and the State of Michigan Hops. Frankfort Beer Week. Frankfort, MI October, 2017.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Sirrine, J R. 2018. Craft Beer Trends and the State of Michigan Hops. University of Vermont Hop Conference. Burlington, VT. February 16, 2018.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Sirrine, J R. 2018. An Introduction to Hop Production. Great Lakes Hop and Barley Conference. Kalamazoo, MI. March 12, 2018.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Sirrine, J R. 2018. Hops: Biological basis of production. MSU Hop Field-Day. Coopersville, MI. June 28, 2018.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Sirrine, J R. 2018. Hop Fertility and Pest Management. Hop growers of Michigan Field-Day. Monroe County, MI. July 21, 2018.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: O'Neal, S. and D. Walsh. 2018. Integrated Pest Management of Arthropods on Hops: 2017 Report. American Hop Convention, January 2018, Palm Desert, CA.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Adesanya, A., & D. Walsh. 2018 Persistent resistance; characterizing adaptation to xenobiotics in a generalist herbivore, Teteranchyus urticae. Comstock award acceptance speech. Pacific Branch Entomological Society of America. Reno, NV. June 2018.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Adesanya, A., M. Wu, L. Lavine, D. Walsh and F. Zhu. 2017. Acaricide resistance of the two- spotted spider mite in hop fields. Entomological Society of America, National meeting, Denver, Colorado.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Adesanya, A., M. Morales, L. Lavine, D. Walsh and F. Zhu. 2017. NADPH-cytochrome P450 reductase is involved in multiple acaricide resistance in the generalist herbivore, Tetranychus urticae Koch. Entomological Society of America, National meeting, Denver, Colorado.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Walsh, D. 2018. IPM on Hops. Hop Research Council, July 2018, Prosser, WA.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Walsh, D. 2018. Biology and management of hops. Industry presentation made to three Yakima Chief audiences: Sunnyside, WA (May 15); Greenleaf, ID (May 16); Silverton, OR (May 17).
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Walsh, D. 2018. Acaricide tests on hops. Pacific Northwest Insect Control Conference, Portland, OR January 9, 2018.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Walsh, D. 2018. Mechanisms of resistance to ovicidal acaricides. Washington Hop Growers Association, Yakima, WA. January 6, 2018.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2018 Citation: Walsh, D. 2018. New pests of hops. Washington Hop Growers Association, Yakima WA. January 6, 2018.
  • Type: Other Status: Published Year Published: 2018 Citation: Sirrine, R. 2018. Pruning Hops for Disease Management and Yield Benefits. Michigan State University.
  • Type: Books Status: Published Year Published: 2018 Citation: Lizotte, E., Sirrine, R. Jess, L. 2018. Michigan Hop Management Guide. Michigan State University.
  • Type: Other Status: Published Year Published: 2018 Citation: Lizotte, E. Sept 2017. Postharvest Hopyard Management. Michigan State University.


Progress 09/01/16 to 08/31/17

Outputs
Target Audience:Growers of hops in rapidly expanding (emerging and re-emerging) production regions including the Great Lakes/Upper Midwest and the Eastern U.S., as well as those in the primary hop-growing region of the Pacific Northwest. Changes/Problems:During this first year of the project, a graduate student assigned to data collection quit after two weeks, leaving a void in the data set. This is being remediated in Year 2. What opportunities for training and professional development has the project provided?Opportunities including conferences, field days, and commission presentations were listed in this report under "other products" and above under "What was accomplished under these goals." Walsh's presentation at the American Hop Conference reached over 600 participants. How have the results been disseminated to communities of interest?See specifics under "products," "other products," and "What was accomplished under these goals." What do you plan to do during the next reporting period to accomplish the goals?Progress on objectives is on track, for the most part. Some items are ahead of schedule, others slightly behinds, but overall we are in good shape and will proceed with our plans as set forth in our project proposal for Year 2 in terms of meetings, presentations, and publications. Specific to Years 2 and 3 are the hop grower surveys that will begin to assess the impacts and outcomes of our project.

Impacts
What was accomplished under these goals? Research Objective 1. Research plots were established with grower-cooperators. Miticides were applied. Leaves were collected weekly from the research plots throughout the growing season and arthropod (pest and beneficial) counts were taken. Cone samples have begun at this writing (late August 2017) and will continue through fall harvest. Mites have been bioassayed to ascertain resistance levels to miticides. Research Objective 2: Protocols were developed in consultation with grower-cooperators and between PDs. Spray records were obtained. Available historical data, along with new data, were entered into database. Extension Objective 1: Surveys were taken of growers in both regions to determine practices and priorities. New publications were released and presentations made. Extension Objective 2: Powdery mildew and downy mildew forecasting models for the Pacific Northwest were provided to Great Lakes PDs for regional validation. Emergence of obliquebanded leafroller and European corn borer has been noted and is being monitored; pheromone traps were readied for deployment if deemed necessary. Extension Objective 3: Presentations have been made emphasizing export issues, particularly MRLs, at regional hop grower meetings, Hop Industry Plant Protection Committee meetings, and other industry events. Participation in MSU'slistserv and the USAHops newsletter mailing listhas been encouraged to enable growers to stay current on export/MRL issues. MRLs are now listed and updated regularly athttps://www.usahops.org/growers/clean-plants.html under a link "Hop MRL Tracking Chart." Extension Objective 4: Clean Plant Network services, acquisition and use of clean planting materials, use of sanitation measures, and observance of quarantines has been emphasized at all presentations during the project eyar. Pacific Northwest phytosanitary protocols have been shared with Midwest growers and are being adopted. Extension Objective 5: The English language pocket guide for the Midwest has been developed and published and is being distributed. A Spanish language or bilingual version is now under development. Extension Objective 6: After this first project year, surveys will be taken at national and regional hop conferences to quantitatively evaluate the success of our outreach efforts.The Hop Industry Plant Protection Committee has agreed to serve as our focus group for qualitative input. The first meeting with this group in this capacity took place in July 2017. In support of all objectives, and as outlined in our proprosal, periodic meetings were held between the PDs via teleconference or face-to-face at industry conventions (4 in the project year).

Publications

  • Type: Other Status: Published Year Published: 2017 Citation: Lizotte, E., A. McFarland, R. Sirrine. 2017. Great Lakes Hop and Barley Conference 2017 Impact Report. Michigan State University.
  • Type: Books Status: Published Year Published: 2017 Citation: Lizotte, E., E. Hodgson, M. Filotas. 2017. Hop scouting pocket guide for the U.s. Upper Midwest and Northeast, and Eastern Canada. Michigan State University Extension Bulletin #3348. 57 pp.
  • Type: Journal Articles Status: Published Year Published: 2017 Citation: Nakawuka, P., R.T. Peters, S. Kenny, D. Walsh. 2017. Effect of deficit irrigation on yield quantity and quality, water productivity, and economic returns for four cultivars of hops in the Yakima Valley, Washington State. Industrial Crops and Products. 98(2017) 82-92.
  • Type: Conference Papers and Presentations Status: Published Year Published: 2017 Citation: Walsh, D. 2017. Integrated Pest Management of Arthropods on Hops. American Hop Convention, Bend, Oregon. January 17-20, 2017.