Brief Summary of Minutes of Annual Meeting

Monday, January 25: State Reports 

1:00pm      Introductory Topics

• Welcome: Dominic Reisig
• Dewayne Hyatt: how to use Teams
• John Ruberson, NC Multistate Advisors update – next renewal should have emphasis on multi-state collaborations.

1:15      State by state reports – conducted in alphabetical order – refer to submitted reports for more detail:

• AL: Katelyn Kesheimer – highest acreage in 10 years. CEW low in timely planted corn. Isolated sugarcane beetles, snails
• DE: David Owens – slugs main pest, WCRW, ECB

• FL: Silvana Paula-Morales – Hurricane Sally ruined FAW research. No armigera detected. Fewer snails than previous years, research/collections of snails interrupted by hurricane
• GA: David Buntin – COVID delays. Over 90% of planted corn in Bt (almost all 2 gene), 58% cotton planted was 3 gene. FAW high in late planted, CEW low unless late planted, revised stink bug thresholds. No damage on VIP.
• IL: Joe Spencer and Nick Seiter –COVID delays. 8” of rain impacted CRW populations. Hail in July further damaged research. Annual research booklet. Bioassays on populations collected in state; rise in survival of WCRW on Cry3 traits:
  • Highest survival on 34/35 this year (50%)
  • Herculex rootworm trait - some wear
  • Rootworms in Dekalb – resistance to Cry 3
    • greater resistance to 34/35
    • More reports of problems with pyramided traits
  • IN: Christian Krupke –similar to Illinois. Continued CRW refuge work - finish marking refuge beetles and varying refuge scenarios (5% in a bag, 20% RIB) don’t have all data.
  • IA: Brad Coates – CRW genome complete. by Tom on CEW sampling patterns in NE US. chemical insecticide resistance using fruit fly as a model:
    • microRNAs are highly involved in detoxification
    • downstream within a regulatory pathway
  • KY: Raul Villanueva –CEW pressure similar to 2019, few ECB, stink bugs western KY at threshold. BMSB in western KY
  • LA: Fangneng Huang – CEW normal, VIP performed well, multiple larvae per ear on Cry traits. VIP was good in cotton. Other pests included FAW, stink bugs; no stalk borer problems. No cross resistance to VIP
  • MD: Kelly Hamby – corn acreage down 1%. Low WBC in traps, no FAW, CEW varied by location. True armyworm and cutworm damage early in year. Slug pressure varied by location (0-12 /trap) but overall worst pest. Used Kelly Tillmon’s students’ trap with soap/water and shingles. Collaborative projects with Galen Dively, Megan Fritz (genomic approach to ID Bt resistance). Galen Dively – 1^st flush of CEW larger than normal
  • MI: Chris DiFonzo – Asiatic garden beetle work prevented due to COVID restrictions. One location of sentinel sweet corn Trapping for Great Lakes Maritime network
  • MN: Bill Hutchinson – good yields. Bruce Potter – CRW trapping sampling methods and discussion. virtual field days (Corn Bt rootworm trial) on YouTube link in state report. Carrie Deans, post doc; quantitative estimates of BT protein in kernels in RIB ears:
    • Most of non-Bt kernels had 40-50% of expected dose

Areawide corn borer survey in MN and WI: historically low corn borers. Hot spots where organic field corn growers plant non Bt to save money  

Ken Ostlie – rootworm populations did well in MN; saw an increase. Ratio high for northern corn rootworm. Increased reports for pyramids (Chrome and Smart Stax)

• MS: Angus Catchot – No major pests other than CEW and the soil insect complex. Half million acres of corn; 180 bu/a. Lots of dryland
• MO: Bruce Hibbard discussed CRW research and continued development of artificial diet. Curently dry diet. Should have artificial diet for WCRW in 96 well plates. Continue work on NCRW to make commercially available. No rootworm scientist at the USDA ARS South Dakota; RW rearing is status quo but still ongoing and no timeframe when it will stop
• NE: Thomas Hunt – WCRW pops moderately high, NCRW pops low. Efficacy of Bt hybrids is in decline; more insecticides being used, some areas it is common. Looking at the biological value of these tactics to control CRW. Some WBC, spider mites. Continued cover crop studies. No studies showed any detectable pest pressure. Pitfall traps found significant levels of spider activity that appear to be correlated with cover crop biomass. One isolated report of wheat stem maggot; low pressure, COVID issues.
• NC: Dominic Reisig – stink bugs, both green and brown problematic, isolated southern corn billbug (more and more resistant to clothianidin), CEW pressure widespread, Vip holding strong. More growers are hiring scouts for corn. Collaborative work with VT; lowered threshold in pre-tassel time frame. NC State and Clemson to investigate overwintering habitat types for stink bugs. seed quality issues in soybeans, using determinate varieties- green island late in the year and attract stink bugs
• NY: Elson Shields –In northern New York waiting for other shoe to drop with mycotoxins. Many dairy farmers are ignoring WBC although they are present, had some good flights. Seed corn maggot – seeing more problems, related to reduced seed treatments

3:00- 3:15     Break 

3:15      EPA Update

• Kara Welsh from EPA provided update of the Lepidopteran refuge agreement. Timeline – new administration will cause some delays (new political appointees), possibly some changes related to new administration, although not anticipated. They are reviewing diverse and detailed comments (42 with 2 duplicates and quite substantive) now and next will enter negotiation period with ABSTC and this will likely take the next year. Discussion on Sentinel plots – conventional planting time to get realistic results vs. late planted to provide a better early warning system. Field corn vs. sweet corn. Need to clarify how to confirm resistance. Discussion followed.

3:45      State by state reports cont. – conducted in alphabetical order– refer to submitted reports for greater detail:

• ND: Janet Knodel. Continued/increased CEW monitoring network, higher trap catches in hardstack vs scentry. Increased corn borer pressure. New publication on corn arthropod pests. Ran ECB network in southeast part of the state and monitored in field for CRW.

Brad: weather was good, high numbers of rootworms because of lack of rain. Highest pressure in last 4 years (5x more than last year). Problem fields are corn on corn for 15 years.

• OH: Andrew Michel –true armyworm outbreak in wheat and corn. Low WBC populations in July. Did not see much Lep feeding in corn; plant pathologist got calls on ear mold
• Ontario: Tracey Baute –publications this year on ear feeding and mycotoxin. Biggest problem was rootworm; resistance to pyramided traits. WBC better flight than last year, not as bad as 2019. Not a lot of ear mold compared to two years ago when DON was bad. Haven’t had bad TAW since 2012.
• PA: No report
• SD: Billy Fuller – Highest CRW pressure in 4 years.
• TN: Juan Luis Jurat-Fuentes –mechanism of resistance in FAW, CRY1F, developing FAW reference genome. Using CEW strains from Kerns and FAW strains from LSU/TX to look at mechanism of resistance. No extension field crops entomologist currently
• TX: Pat Porter - introduced Dalton Ludwick, new extension entomologist in Corpus Christi. Porter reported lower than expected CEW populations (light pest year overall). Rumored CRW failures in panhandle; no one up there so just from consultant. Paper will show emergence in Leptra/Trecepta

Dalton Ludwick – light year for pests; looking at impact of CEW on fungal growth in ear and Bt resistance monitoring. Pat Porter introduced new outreach at A&M. Create an audio update for different areas that is only 6-7 minutes.

• VA: Sally Taylor – season off to a great start, late freeze killed, set back corn. 30–50% of corn lost to drought. Slugs were bad, stink bugs were not an issue in corn but were a problem later in soybeans, starting to get southern green stink bug. End of season WCRW in some hot pockets
• WI: Bryan Jensen – good growing season. CRW populations up, mostly NCRW, CRY3435 resistance documented, WBCW populations higher while corn borer was down. Good year, timely rains, late fall, everything went better than 2019. Dept of Ag surveys indicated only 20% (250) were over 0.75 beetles/plant for WCRW. Calls for UXI worse. Corn borer counts lower. July had 4-5 calls on flea beetles, but not economic
• Wrap up, final discussion – Dominic Reisig

4:30      Adjourn for day 

Tuesday, January 26 2021

8:00am Morning introduction and business – technical information for presenters, etc.

8:10 Morning session speakers and discussion

• Relaxed research agreements. Pat Porter updated current situation - 5 year agreements have expired. New text for renewing these agreements that was developed at last year’s meeting and each university/company are all in different places with different levels of success. Discussion. Seems that Bayer is the only company where much progress has been made. Path forward with other companies? Discussion with reps from industry (Corteva, Syngenta, BASF). They advise to reach out to contacts and provide info. on what they need.

Google doc with information of agreements shared: https://docs.google.com/spreadsheets/d/1IcKf-44NBjtz88TkxR_MvkvDJvpmt8jEfAxtzeCVuZM/edit?usp=sharing

Bring in American Seed Trade Association – Julie Peterson offered to coordinate, and Ken Ostlie will assist. Thought is that this will help move things forward.

• Reminder from Dominic Reisig to Opt-in on group letters. Each person must choose to be a signatory - some folks (USDA, international (may have restrictions

• Corn/Cotton date update on zea Dominic Reisig – Research shows no spatial pattern in terms of resistance, getting random damage on Bt and non Bt corn. Bioassay with Cry1Ac – which crops in system predict results of bioassays? Answer: it is complicated; soybeans are very important and influencing survivability and resistance. Corn is having suppressive effect on feeding and damage in system
• Corn earworm adult emergence from Vip3a seed blend and structured refuge from twin experiments in Georgia and Texas, and a comparison of methods used to evaluate that emergence Matt Carroll, Joni Blount, David Buntin, Suhas Vyavhare and Pat Porter. Funded by ABSTC. Pat Porter presented TX data. David Buntin presented Georgia data. Very similar results from two very different locations.
• Is there a change in zea feeding behavior toward avoiding kernel consumption? Pat seeing larvae feeding on silks and ear tips rather than kernels, allowing to avoid toxins. Discussion.

• Suggestions of the use of multiple toxins in multiple crops for polyphagous insects. Michael Caprio et al. Conventional refuges result in longer durability than seed-blends. Conventional refuge with no Cry resistance – put Vip in corn and cotton. Conventional refuge with with Cry resistance – put in Vip cotton. Seed blend – put VIP in cotton, not in corn.

9:30 – 9:40         Break

9:40      Morning session resumed

• Importance of cotton production for the corn earworm, IRM and VIP considerations – Angus Catchot Corn does not experience consistent heavy insect pressure and seed treatments have largely controlled. But, CEW is present, especially in non-Bt. Vip just 20% or so in corn. Concern is corn may drive resistance in cotton. Suggests they don’t need the genes in corn but are key to cotton and having them in corn is risking their efficacy in cotton.
• Proposed IRM framework for lepidopteran pests: Agricultural Biotech Stewardship Technical Committee (ABSTC) presented by Matt Carroll. Invited Kara Welsh, EPA to give a brief review of timeline for EPA proposal moving forward. Matt gave background and points of the EPA’s proposal and ABSTC’s position. Questions and discussion followed.
• 2020 Sentinel Sweet Corn Network update and 2021 plans – Galen Dively shared results from 43 locations in 2020 and compared to historical results. Discussed options and directions for 2021.
• The Impact of Field corn Bt/non-By hybridization on Bt expression: Implications for RIB efficacy on Heliothine pests. Carrie Deans and Bill Hutchison. Quantified Cry proteins in kernels in non Bt and seed blend and discussed results showing that cross pollination between Bt and non Bt reduce or eliminate refuge requirements of IRM, Reduce expression levels undermining high dose requirements of IRM, Impact Cry profile in kernels-pyramided ears can become double or single trait ears.

12:00 - 12:15      Break

• Western corn rootworm genome sequencing and annotation – Brad Coates, Nicholas Miller, Marcé Lorenzen, Hugh M. Robertson et al. (Presented by Brad Coates). Explained how the WCRW genome was assembled, how it can be used and the importance
• USDA-ARS Ag100 Pest Initiative – sequencing top 100 Ag pest arthropods including corn pest genomes. Brad Coates. Discussed ag insects that have been sequences and future directions.
• Creating a shared protocol for protocol for adult corn rootworm trapping network. Erin Hodgson. Gauge interest in trapping network and to explain what it entails.
• Biological control of CRW with persistent native entomopathogenic nematodes. Elson Shields presented data from 7 years of research and multiple locations and discussed what this means for practical application.
• Living on the edge: Ecology of lepidopteran pests in the overwintering and migratory intersection region of the U.S. Gulf Coast. Silvana Paula-Moraes. Working to document emergence of CEW with year-round sampling. Marcelo Merdes Rabelo presented some work on mortality of zea on Bt cotton and life-history traits
• Bt soybean in Brazil: performance and complexities of non-target lepidopteran pests. Adeneu Bueno. Update on the use of Bt soybeans in Brazil, advantages, challenges and future directions.

2:40 – 2:50      Break

• Slugs on corn and soybeans – John Tooker. Slug damage, how land management impacts populations. Discussion
• NIFA update – Erica Kistner-Thomas. Update on relocation to Kansas City, grants, and upcoming priorities.
• Review of Corteva traits, resistance research, and collaborations on future of CRW management – Amit Sethi, Jim Bing, Clint Pilcher, Andre Crespo, and Nick Storer (presented by Amit Sethi).

4:40     Final business items.

• Committee reports
• Dalton Ludwick: Secretary (voted on)
• Katelyn Kesheimer: Vice-Chair
• Holly Davis: Chair
• Next year’s meeting (2022): Auburn, AL

4:50      Adjourn 

Individual state reports received from 19 states (Delaware, Florida, Illinois, Indiana, Iowa, Louisiana, Maryland, Michigan, Minnesota, Missouri, Nebraska, North Carolina, North Dakota, Ohio, Ontario, South Carolina, Tennessee, Virginia, Wisconsin) were used to compile the list of accomplishments for the reporting period from January 1, 2020 through December 31, 2020. These accomplishments reflect work on a diverse array of arthropod management issues that are directly relevant to corn growers, consultants, and other stakeholders in the corn production enterprise and rural environments.

2020 was a challenging year for our project and many proposed activities that were to take place in-person were moved to virtual, including our annual meeting held January 25-26, 2021.  Project members proved resilient and were able to pivot many activities toward virtual. This is reflected in much of the outputs we have listed. However, outputs from 2020 did suffer from restrictions on our activities, required to slow the COVID-19 pandemic. During 2021, we plan to continue our virtual outputs, hopefully returning to serve our stakeholders and clientele in person when it is safe to do so.

Selected outputs

Handy Bt Trait table. This trait table is maintained by member Chris Difonzo and updated with inputs from other members of the project. The purpose of the table is to provide corn growers with a way to match trade names of products with insect pest traits and efficacy.  During 2020, the the Handy Bt Trait table got the Educational Project Award from the Board Certified Entomologists of Mid-America.  https://www.texasinsects.org/bt-corn-trait-table.html

Response to the EPA Draft Proposal to Address Resistance Risks to Lepidopteran Pests of Bt Following the July 2018 FIFRA Scientific Advisory Panel Recommendation Memorandum. During 2018, the EPA convened a scientific advisory panel to create recommendations for new resistance management guidelines for “non-high dose pests”.  The EPA responded to this panel’s recommendations with a draft proposal during 2020, which was open to public comment. Many members of our project, in cooperation with the National Cotton States Arthropod Pest Management Working group prepared a detailed 28-page commentary to this proposal. Our response essentially outlined what a superior resistance management program for these pests should look like given the best available science.  https://reisiglab.wordpress.ncsu.edu/files/2020/11/Response-to-the-EPA-Draft-Lep-Proposal.pdf

Selected Extension Materials

Collectively, our group has presented at hundreds of venues, to thousands of stakeholders and clientele and created numerous extension publications.  The list we have curated is only exemplative of the many outputs members of our project have individually and collaboratively produced.

AgriTools Mobile Application. A free tool from Nebraska Extension that provides easy access to location-specific climate and weather information important to the agricultural industry in Nebraska. New to the app in 2020 is the addition of several pest insect degree-day models, including the western bean cutworm.

Brown S., F. Huang. 2020. Resistance development to Bt crops in caterpillars: Implications for pest management and cotton/corn production in Louisiana. Louisiana Agriculture 63(2): 68-69.

Brown, S., J.A. David, R. Diaz, K. Healy, F. Huang, N. Lord, T. Reagan, D. Ring,  T. Schowalter, M. Stout, T. Smith, Q. Sun, B. Wilson, Q. Sun. 2020. Louisiana Insect Pest Management Guide. LSU AgCenter. Pub. 1838. pp 228.

Bryant, T., and F.P.F. Reay-Jones. 2020. Sugarcane beetle as a pest of corn. Land-Grant Press by Clemson Extension. LGP 1076. (peer-reviewed Extension publication)

Coyle, D., T. Brosius, Z. DeVries, R. Schmidt-Jeffris, R.C. Gott, C. Loudon, J. Saguez, T. Simonsen, J. Van Den Berg, R. McDonnell, I. Ronai, L. Zhu, M. Siebert, F. Wessels, R. Hamm, L. Higgins, S. Thompson, R. Serikawa, N. Spomer, and J. Spencer. 2020. COVID-19: Reflections from entomologists who rose to the occasion. “Making the best Something of a Bad Situation.” American Entomologist. 66(3):34-41. https://doi.org/10.1093/ae/tmaa040.

Cramer, M., Dively, G., and K. Hamby. 2020. In dry weather, watch for silk-clipping insects in corn. University of Maryland Extension Agronomy News: August 2020 11(5): 11-12.

Difonzo, C. Video/ podcast: First true armyworm outbreak in wheat since 2010.  (24 June 2020)  https://youtu.be/C-Pk0ANkDr4

Dively, G.P. Current efficacy and management of Bt sweet corn. Sweet Corn 1: Worm Issues. Proceeding of the Great Lakes Expo. 3 pp.

Estes, K., N. Kleczewski, K. Ames, N. Seiter, A. Decker. 2020. 2019 Applied Research Results Field Crop Disease and Insect Management. University of Illinois Department of Crop Sciences, Urbana, IL. https://uofi.box.com/v/2019PestPathogenARB

Hamby, K., Cramer, M., Dively, G., Hirsh, S., Kness, A., Leslie, A., Nichols, K., Zobel, E., and D. Owens. 2020. Corn earworm pressure varying regionally–make sure to scout. University of Maryland Extension Agronomy News: August 2020 11(5): 3.

Hamby, K., and G. Dively. 2020. Proposed EPA changes to address resistance risks for caterpillar pests in Bt crops open for comment until November 9.  University of Maryland Extension Agronomy News: August 2020 11(7): 3-5.

Hamby, K., Cramer, M., Dively, G., Hirsh, S., Kness, A., Leslie, A., Nichols, K., Zobel, E., and D. Owens. 2020. Corn earworm pressure rising–make sure to scout. University of Maryland Extension Vegetable and Fruit News: Special Alert Edition August 18, 2020

Hodgson, E. W., A. Dean, N. Seiter, V. Schmitt. 2020. Insect and Mite Management. in Field Crop Production Handbook: An Introduction to Farming Practices CROP3162 (ed. E. W. Hodgson, M. A. Licht, A. J. Sisson). Iowa State University Extension, Ames, IA.

Jensen, B. 2020. Black Cutworms in Corn Video https://www.youtube.com/watch?v=ltT7TBEd8_Q

Jensen, B. 2020. Scouting for Japanese Beetles in Corn and Soybean Video https://www.youtube.com/watch?v=puufn2MFsOk

Jensen, B. 2020. Early Season Insect Damage in Corn Early-Corn-Insects.pdf (wisc.edu) 

Jensen, B. 2020.  IPM Decision Aid:Managing BT resistance (Updated) https://ipcm.wisc.edu/download/pubsPM/GMO-Resistance-CornRootworm.pdf      

Jensen, B. 2020. Revised: Commercial Vegetable Production In Wisconsin (including sweet insect management)  https://cdn.shopify.com/s/files/1/0145/8808/4272/files/A3422-2021.pdf

Jensen, B. 2020.  100 Field Crop Scout Training Manuals Printed for use in UW and Vocational Technical Colleges http://ipcm.wisc.edu/download/pubsPM/UW-IPM-ScoutingManual-web.pdf    

Jensen, B. 2020. 2021, Pest Management in Wisconsin Field Crops, revision https://patstore.wisc.edu/secure/browse_cat.asp?category_id=39S

Kesheimer, KA. 2020. Corn IPM Guide: Insect Control Recommendations for 2021 (revised). Alabama Cooperative Extension System, IPM-0428: 1-32.

Kesheimer, KA. 2020. Watch for grasshoppers in corn. Alabama Crops Report Newsletter, 1(4).

Kesheimer, KA and SH Graham. 2020. EPA releases draft of new regulations to help slow spread of Bt resistance. Alabama Crops Report Newsletter, 1(22).

Knodel, J.J., P. Beauzay, M.A. Boetel, T.J. Prochaska and A. Chirumamilla. 2020. 2021 North Dakota Field Crop Insect Management Guide E1143 (revised). NDSU Ext., Fargo, ND.

Calles-Torrez, V. and J.J. Knodel. 2020. Common Arthropod Pests of Corn E2004. NDSU Extension, Fargo, ND.

Knodel, J.J. 2020. European corn borer emerging. NDSU Extension Crop and Pest Report #10 (July 2, 2020).

Knodel, J.J. 2020. Scout for European corn borer moths. NDSU Extension Crop and Pest Report #11 (July 9, 2020).

Knodel, J.J. 2020. European corn borer update. NDSU Extension Crop and Pest Report #12 (July 16, 2020).

Knodel, J.J. 2020. Mystery insect. NDSU Extension Crop and Pest Report #12 (July 16, 2020). Wheat stem maggot in corn.

Knodel, J.J. 2020. European corn borer update. NDSU Extension Crop and Pest Report #13 (July 23, 2020).

Knodel, J.J. 2020. European corn borer trap update. NDSU Extension Crop and Pest Report #14 (July 30, 2020).

Knodel, J.J., and Calles -Torrez, V. 2020. Adult corn rootworm emerging. NDSU Extension Crop and Pest Report #14 (July 30, 2020).

Knodel, J.J. 2020. Adult corn rootworms emerging. NDSU Extension Crop and Pest Report #15 (August 6, 2020).

Nebraska Extension CropWatch articles (http://cropwatch.unl.edu)

Cluever J, J Bradshaw, J Peterson & R Wright. June 17, 2020. “Western Bean Cutworm Flight Predictions for 2020.”

Peterson J, R Wright, J Bradshaw & T Hunt. July 8, 2020. “Scouting and Treatment Recommendations for Western Bean Cutworm.”

Wright R, J Peterson & T Hunt. July 22, 2020. “Managing Spider Mites in Corn and Soybean.”

Wright R, J Peterson & T Hunt. July 22, 2020. “Identifying Spider Mite Damage and the Species Responsible.”

Wright R & J Peterson. July 16, 2020. “Scout Now for Corn Rootworm Beetles to Assess Potential Risk of Future Damage.”

Wright R. and J. McMechan. 2020. Western corn rootworm beetles emerging, time to scout. University of Nebraska CropWatch. July 7th.

Wright R. and J. McMechan. 2020. Japanese beetle emerging; Scout corn and soybean fields. University of Nebraska Crop Watch. June 23rd.

Wright R. and J. McMechan. 2020. Avoiding Injury from Seed Corn Maggot. University of Nebraska Crop Watch. May 20th.

Wright, R., K. Koch, and J. McMechan. 2020. Scouting Emerging Corn for Insects; Don’t Assume Protection. University of Nebraska Crop Watch. May 13^th

Potter, B., K. Ostlie & B. Hutchison. 2020. Reducing Bt corn acreage to cut production costs. Production Guide, MN Extension web site, Corn Pest Management.https://extension.umn.edu/corn-pest-management/reducing-bt-corn-acreage-cut-production-costs

Potter, B. 2020. The European corn borer in Minnesota. University of Minnesota Extension Crop Production website. https://extension.umn.edu/corn-pest-management/european-corn-borer-minnesota-field-corn

Potter, Potter, B., Extension IPM Specialist; K. Ostlie, B. Hutchison, Extension Entomologists; A. Peltier & A. Hanson, Extension Educators. Reducing Bt trait acres in 2020 Minnesota Corn Production? Implications for European corn borer. MN Crop News, UMN Extension.  https://blog-crop-news.extension.umn.edu/2019/11/reducing-bt-trait-acres-in-2020.html

Potter, B. 2020. MN Cooperative Black Cutworm Reporting Network: A website for tracking MN Black cutworm migration and damage tracking includes eight weekly newsletters. The network of mostly private sector coordinators was coordinated by Bruce Potter and Travis Vollmer. https://swroc.cfans.umn.edu/research/ipm/bcw-network

Potter, B., and T. Vollmer. 2020. Corn rootworm insecticide on traits. University of Minnesota Southwest Research and Outreach Center SW MN PM research results. 

https://swroc.cfans.umn.edu/research/ipm/research-results

Potter, B., and T. Vollmer. 2020. Corn rootworm insecticide: Seed and in-furrow. University of Minnesota Southwest Research and Outreach Center SW MN PM research results.  https://swroc.cfans.umn.edu/research/ipm/research-results

Potter, B. 2020 Virtual field day August 11, 2020. Corn rootworm management. https://www.youtube.com/watch?v=N8oMyB8uGGY  (Response to Covid-19/virtual field days)

Reinders, J. D., Z. D. Rystrom, E. E. Reinders, T. B. Dang, and L. J. Meinke. 2020. Performance of seed treatments and soil-applied insecticides against larval western and northern corn rootworm, 2019. Arthropod Management Tests 45(1): 1-2.  doi: 10.1093/amt/tsaa067

Reinders, J. D., Z. D. Rystrom, E. E. Reinders, T. B. Dang, and L. J. Meinke. 2020. Evaluation of seed treatment and soil-applied insecticides against larval western and northern corn rootworm, 2020. Arthropod Management Tests. doi: 10.1093/amt/tsaa120

Pekarcik, A. Richer, E., and K. Tilmon. 2020. Entomopathogenic nematodes for control of the Asiatic garden beetle in field crops. Ohio State University Extension, Wooster, OH. 1-4. https://aginsects.osu.edu/sites/aginsects/files/imce/AGB_EPN_ Handout_Feb2020.pdf

Raudenbush, A., M. Badertscher, F. Becker, L. Beers, B. Clevenger, S. Custer, T. Dehaas, J. Hartschuh, A. Holden, S. Karhoff, E. Lentz, C. Lokai-Minnich, D. Marrison, E. Richer, G. Ruff, B. Scheckelhoff, C. Shroeder, J. Stachler, M. Sunderman, C. Young, C. Zoller, A. Michel, K. Tilmon and C. Everett. “Western Bean Cutworm Monitoring in Ohio” CORN Newsletter: 2020-20. June 30-July 6, 2020. https://agcrops.osu.edu/newsletter/corn-newsletter/2020-20/western-bean-cutworm-monitoring-ohio

Raudenbush, A., M. Badertscher, J. Beck, F. Becker, L. Beers, B. Clevenger, S. Custer, T. Dehaas, C. Everett, A. Gahler, J. Hartschuh, A. Holden, S. Karhoff, A. Leininger, E. Lentz, C. Lokai-Minnich, D. Marrison, L. Ober, E. Richer, G. Ruff, B. Scheckelhoff, C. Shroeder, J. Stachler, M. Sunderman, C. Young, C. Zoller, A. Michel, K. Tilmon. “Western Bean Cutworm Numbers Remain Low Across Ohio” CORN Newsletter: 2020-21. July 7-13, 2020. https://agcrops.osu.edu/newsletter/corn-newsletter/2020-21/western-bean-cutworm-numbers-remain-low-across-ohio

Raudenbush, A., M. Badertscher, J. Beck, F. Becker, L. Beers, B. Clevenger, S. Custer, T. Dehaas, C. Everett, A. Gahler, J. Hartschuh, A. Holden, S. Karhoff, A. Leininger, E. Lentz, C. Lokai-Minnich, D. Marrison, S. Noggle, L. Ober, E. Richer, G. Ruff, B. Scheckelhoff, C. Shroeder, J. Stachler, M. Sunderman, C. Young, C. Zoller, A. Michel, K. Tilmon and M. Lorentz. “Western Bean Cutworm Numbers Starting to Increase” CORN Newsletter: 2020-22. July 14-20, 2020. https://agcrops.osu.edu/newsletter/corn-newsletter/2020-22/western-bean-cutworm-numbers-starting-increase

Raudenbush, A., M. Badertscher, J. Beck, F. Becker, L. Beers, B. Clevenger, S. Custer, T. Dehaas, C. Everett, A. Gahler, J. Hartschuh, A. Holden, S. Karhoff, A. Leininger, E. Lentz, R. Lewandowski, C. Lokai-Minnich, M. Lorentz, D. Marrison, S. Noggle, L. Ober, E. Richer, G. Ruff, B. Scheckelhoff, C. Shroeder, J. Stachler, M. Sunderman, C. Young, C. Zoller, A. Michel and K. Tilmon. “Western Bean Cutworm Numbers Continue to Increase” CORN Newsletter: 2020-23. July 21-27, 2020. https://agcrops.osu.edu/newsletter/corn-newsletter/2020-23/western-bean-cutworm-numbers-continue-increase

Raudenbush, A., M. Badertscher, J. Beck, F. Becker, L. Beers, B. Clevenger, S. Custer, T. Dehaas, C. Everett, A. Gahler, J. Hartschuh, A. Holden, J. Jasinski, S. Karhoff, A. Leininger, R. Lewandowski, C. Lokai-Minnich, M. Lorentz, D. Marrison, S. Noggle, L. Ober, E. Richer, G. Ruff, B. Scheckelhoff, C. Schroeder, J. Stachler, M. Sunderman, C. Young, C. Zoller, A. Michel and K. Tilmon. “Western Bean Cutworm Numbers Continue to Increase” CORN Newsletter: 2020-24. July 28-August 3, 2020. https://agcrops.osu.edu/newsletter/corn-newsletter/2020-24/western-bean-cutworm-numbers-continue-increase

Raudenbush, A., A. Arnold, M. Badertscher, J. Beck, F. Becker, L. Beers, B. Clevenger, S. Custer, T. Dehaas, C. Everett, A. Gahler, J. Hartschuh, A. Holden, J. Jasinski, S. Karhoff, A. Leininger, E. Lentz, R. Lewandowski, C. Lokai-Minnich, M. Lorentz, D. Marrison, S. Noggle, L. Ober, E. Richer, G. Ruff, B. Scheckelhoff, C. Schroeder, M. Sunderman, C. Young, C. Zoller, A. Michel and K. Tilmon. “Ten Counties on WBC Scout List as Statewide Numbers Begin to Decrease” CORN Newsletter: 2020-25. August 4-10, 2020. https://agcrops.osu.edu/newsletter/corn-newsletter/2020-25/ten-counties-wbc-scout-list-statewide-numbers-begin-decrease

Raudenbush, A., M. Badertscher, J. Beck, F. Becker, L. Beers, B. Clevenger, S. Custer, T. Dehaas, C. Everett, A. Gahler, J. Hartschuh, A. Holden, J. Jasinski, S. Karhoff, A. Leininger, E. Lentz, R. Lewandowski, C. Lokai-Minnich, M. Lorentz, D. Marrison, S. Noggle, L. Ober, E. Richer, G. Ruff, B.

Scheckelhoff, C. Schroeder, M. Sunderman, C. Young, C. Zoller, A. Michel and K. Tilmon. “WBC

Numbers Continue to Decrease” CORN Newsletter: 2020-26. August 11-17, 2020.

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Raudenbush, A., A. Arnold, M. Badertscher, J. Beck, F. Becker, L. Beers, B. Clevenger, S. Custer, T. Dehaas, C. Everett, A. Gahler, J. Hartschuh, A. Holden, J. Jasinski, S. Karhoff, A. Leininger, E. Lentz, R. Lewandowski, C. Lokai-Minnich, M. Lorentz, D. Marrison, S. Noggle, L. Ober, E. Richer, G. Ruff, B. Scheckelhoff, C. Schroeder, M. Sunderman, C. Young, C. Zoller, A. Michel and K. Tilmon. “Past WBC Peak Flight, Low Numbers Across State” CORN Newsletter: 2020-27. August18-24, 2020. https://agcrops.osu.edu/newsletter/corn newsletter/2020-27/past-wbc-peakflight-low-numbers-across-state

Raudenbush, A., A. Arnold, M. Badertscher, J. Beck, F. Becker, L. Beers, B. Clevenger, S. Custer, T. Dehaas, C. Everett, A. Gahler, J. Hartschuh, A. Holden, S. Karhoff, A. Leininger, E. Lentz, R. Lewandowski, C. Lokai-Minnich, D. Marrison, S. Noggle, L. Ober, E. Richer, G. Ruff, B. Scheckelhoff, C. Schroeder, M. Sunderman, C. Young, C. Zoller, A. Michel and K. Tilmon.

“Minimal WBC Reported Across Ohio” CORN Newsletter: 2020-28. August 25-31, 2020.https://agcrops.osu.edu/newsletter/corn-newsletter/2020-28/minimal-wbc-reported-acrossohio

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Reisig, D. 2020. Effect of seed treatment and in-furrow insecticides on brown stink bug in corn. 2020. https://www.youtube.com/watch?v=aGeTcSzrFxM&feature=youtu.be

Reisig, D. 2020. Fall armyworm in corn. 2020. https://www.youtube.com/watch?v=__tZG-8s83c&feature=youtu.be

Reisig, D. 2020. Scout Stink Bugs in Seedling Corn.

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Reisig, D. 2020. Important Changes for Stink Bug Thresholds in Corn for 2020.

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Reisig, D. 2020. How to Scout and Manage Stink Bugs in Pre-Tassel Corn. https://corn.ces.ncsu.edu/2020/06/how-to-scout-and-manage-stink-bugs-in-pre-tassel-corn/

Reisig, D. 2020. Non-Bt Hybrid Yield Trial 2020 Results and Why You Should Plant Non-Bt Corn as Resistance Insurance. https://corn.ces.ncsu.edu/2020/10/non-bt-hybrid-yield-trial-2020-results-and-why-you-should-plant-non-bt-corn-as-resistance-insurance/

Reisig, D. D. 2020. Insect control in field corn. 2020 North Carolina Agricultural Chemicals Manual. North Carolina Cooperative Extension Service, College of Agriculture and Life Sciences, N.C. State University, Raleigh, N.C. pp. 74-76.

Schnitky, G., A. Hager, N. Seiter, N. Kleczewski. Crop management outlook for 2020. University of Illinois FarmDoc Webinar Series. 8 April 2020 (webinar) https://www.youtube.com/watch?v=1qJQLHjkMCM&t=4s

Seiter, N., K. Adee, P. Bertels, D. Epstein, N. Fields, J. Harris, M. Mason, J. McClellan, R. Sears, T. Steeger, S. Stewart, A. Varenhorst, J. Weirich. 2020. Best management practices for pollinator protection in field corn. Honey Bee Health Coalition, National Corn Growers Association. https://honeybeehealthcoalition.org/wp-content/uploads/2020/03/HBHC_Corn_022020.pdf

Seiter, N., K. Estes, and J. Spencer. “Managing Corn Rootworm in Illinois: Outlook for 2020.” Farmdoc Daily (10): 47, Department of Agricultural and Consumer Economics, University of Illinois at Urbana-Champaign, March 13, 2020.

Spencer J.L., N.J. Seiter, and Kelly A. Estes. 2020. Multiple video interview segments about corn rootworm biology, ecology and Bt corn hybrids with HLK (media production agency) for Bayer Crop Science #TraitAnswers and “The Watch” web/Twitter platforms. Champaign, IL. March 5, 2020.

Seiter, N. Updates in pest management. University of Illinois Extension Northwest Illinois Agronomy Summit. Freeport, IL. 14 Jan 2020

Seiter, N. Insect management in corn and soybean. University of Illinois Extension Crop Management Conference (delivered 4 times in Mt. Vernon, Springfield, Champaign, and Malta IL). 22 Jan-12 Feb. 2020.

Seiter, N. Insect pests: what to watch for in cover crops and conservation tillage. Northeast Missouri/Western Illinois Soil Health and Conservation Tillage Conference. Quincy, IL 7 Feb. 2020.

Seiter, N. Early season pests to look out for in 2020. University of Illinois Extension Commercial Ag Webinar Series. 4 June 2020 (webinar) https://www.youtube.com/watch?v=B-VXGRKC-1U

Seiter, N. Scouting and managing mid-season insect pests in corn and soybean. University of Illinois Extension Commercial Ag Webinar Series. 23 July 2020 (webinar) https://www.youtube.com/watch?v=jYNu7AEmuXE

Seiter, N. Corn rootworm management. University of Illinois Monmouth Virtual Field Day. 12 August 2020 (webinar) https://www.youtube.com/watch?v=NuPtmNuMYYo

Seiter, N. Corn rootworm management and control evaluations. University of Illinois Crop Sciences Virtual Agronomy Day. 26 August 2020. (recorded presentation) https://www.youtube.com/watch?v=JxLon-Xxcjs&feature=emb_logo

Seiter, N. Current status of rootworm resistance and management in Illinois. Illinois CCA Conference. 9 December 2020 (webinar)

Seiter, N. Insect management in rye cover crops. Indiana CCA Conference. 15 December 2020 (webinar)

Seiter, N. Corn rootworm – Management considerations for 2020/ https://www.youtube.com/watch?v=KKXVPzNt7bk&feature=youtu.be

Seiter, N. Economic decision making in pest management. https://www.youtube.com/watch?v=stX3_9ou91c

Seiter, N. Grape colaspis: a sporadic pest of corn and soybean in Illinois. https://www.youtube.com/watch?v=jLdTfI8LwDY&t=55s

Seiter, N. Insect management following a rye cover crop. https://www.youtube.com/watch?v=1651eYu420E

Seiter, N. Dealing with slugs in corn and soybean. https://www.youtube.com/watch?v=RamzkEs5KDw

Seiter, N. Using sticky traps to make corn management decisions. https://www.youtube.com/watch?v=q2juXv6ShEw

Spencer, J.L. 2020. Getting high with the beetles. American Entomologist. 66(4):28-32. https://doi.org/10.1093/ae/tmaa058.

Spencer, J.L. 2020. Corn rootworm Bt resistance – another problem we wish would “just go away” 2020 University of Illinois Virtual Agronomy Day. September 8, 2020. 8-minute video presentation. https://www.youtube.com/watch?v=nJ-pOtl3SpU&feature=emb_logo

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