W5147: Managing Plant Microbe Interactions in Soil to Promote Sustainable Agriculture

(Multistate Research Project)

Status: Active

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SAES-422 Reports

12/01/2023

Peer Reviewed

Adams AK, Kristy BD, Gorman M, Balint-Kurti P, Yencho GC, Olukolu BA. (2023) Qmatey: An automated pipeline for fast exact matching-based alignment and strain-level taxonomic binning and profiling of metagenomes. Briefings in Bioinformatics. 24 (6): bbad351

Adhikari T, Olukolu BA*, Paudel R, Pandey A, Halterman D, Louws F. (2023) Genotyping-by-Sequencing Reveals Population Differentiation and Linkage Disequilibrium in Alternaria linariae from Tomato. Phytopathology. https://doi.org/10.1094/PHYTO-07-23-0229-R

Arstingstall, K.A., DeBano, S.J., Li, X., Wooster, D., Rowland, M.M., Burrows, S. and Frost, K. 2023. Investigating the use of DNA metabarcoding to quantify bee foraging and effects of threshold selection. PLOSONE 18:e0282715 https://doi.org/10.1371/journal.pone.0282715.

Bell-Dereske LP, Benucci GM, da Costa PB, Bonito G, Friesen ML, Tiemann LK, Evans SE. Regional biogeography versus intra-annual dynamics of the root and soil microbiome. Environmental Microbiome. 2023 Jun 7;18(1):50.

Cheng, W., Xue, H., Yang, X., Huang, D., Cai, M., Huang, F., Zheng, D., Peng, D., Thomashow, L.S., Weller, D.M., Yu, Z., and Zhang, J. 2022. Multiple receptors contribute to the attractive response of C. elegans to pathogenic bacteria. EMBO Reports. 11(1). https://doi.org/10.1128/spectrum.02319-22.

Delventhal, K., Busby, P., and Frost, K.E. 2023. Tare soil alters the composition of the developing the potato rhizosphere microbiome. Phytobiomes 7:91-99

Delventhal, K., Skillman, V.^#, Li, X., Busby, P., and Frost, K.E. 2023. Characterizing variation in the bacterial and fungal tare soil microbiome of seed potato. Phytobiomes 7:78-90.

Figueroa JL, Panyala A, Colby S, Friesen M, Tiemann L, White III RA. MerCat2: a versatile k-mer counter and diversity estimator for database-independent property analysis obtained from omics data. bioRxiv. 2022 Nov 24:2022-11.

Flasco, M. T., Cieniewicz, E. J., Pethybridge, S. J., and Fuchs, M. F. 2023. Distinct red blotch disease epidemiological dynamics in two nearby vineyards. Viruses 15:1184.https://doi.org/10.3390/v15051184.

Heck, D. W., Hay, F. S., and Pethybridge, S. J. 2023. Enabling population biology studies of Stemphylium vesicarium from onion with microsatellites. Plant Dis. PDIS-04-23-0706-RE. Published First Look 17 June 2023. https://doi.org/10.1094/PDIS-04-23-0706-RE.

Heck, D. W., Sharma, P., Kikkert, J. R., and Pethybridge, S. J. 2023. Sampling, a new iOS application for assessment of damage by diseases and pests using sequential sampling plans. Plant Dis. 107:1714-1720. https://doi.org/10.1094/PDIS-04-22-0800-SR

Jernigan, A., Kao-Kniffin, J., Pethybridge, S. J., and Wickings, K. 2023. Soil microarthropod effects on plant growth and development. Plant and Soil 483:27-45.Soil microarthropod effects on plant growth and development (springer.com)

Klasek, S., Crants, J., Abbas, T., Ashley, K., Bolton, M., Caballero, J.I., Celovsky, M., Gudmestad, N.C., Hao, J., Jahn, C., Nkuekam, G.K., Lankau, R., Larkin, B., Lopez, E., Miller, J., Moore, A., Pasche, J., Ruark, M., Schroeder, B., Shan, S., Skillman, V., Srour, A., Stasko, A., Steinke, K., Stewart, J., Thornton, M., Zitnick-Anderson, K., Frost, K., Rosen, C., and Kinkel, L. 2023. Potato soil core microbiomes are regionally variable across the continental U.S. Phytobiomes (in press).

Menalled, U. D., Smith, R. G., Cordeau, S., Di Tommaso, A., Pethybridge, S. J., and Ryan, M. R. 2023. Phylogenetic relatedness can influence cover crop-based weed suppression. Scientific Rep. 13:17323. https://doi.org/10.1038/s41598-023-43987-x.

Pethybridge, S. J., Damann, K., Murphy, S. P., Diggins, K., and Gleason, M. 2023.Optimizing mesotunnels for organic acorn squash in New York. Plant Health Progress. PHP-08-23-0072-RS. Accepted 16 October 2023. On First Look. Proofs returned 7 December 2023. https://doi.org/10.1094/PHP-08-23-0072-RS.

Pethybridge, S. J., Murphy, S. P., and Kikkert, J. R. 2023. Growth manipulation of slicer carrots by foliar-applied gibberellic acid 3 in New York. HortTechnology 33:325-332. https://doi.org/10.21273/HORTTECH05231-23.

Pethybridge, S. J., Murphy, S. P., Branch, E. B., Sharma, P. S., and Kikkert. J. R. 2023. Manipulating table beet growth using exogenous gibberellic acid 3 in New York, USA. Annals of Applied Biology Published 19 September 2023. On Early View. https://doi.org/10.1111/aab.12870.

Pethybridge, S. J., Murphy, S., Lund, M., and Kikkert. J. R. 2023. Survival of Sclerotinia sclerotiorum sclerotia in central New York. Plant Disease. PDIS-10-23-2126-SC. Accepted 6 November 2023. On First Look 9 November 2023.https://doi.org/10.1094/PDIS-10-23-2126-SC.

Rivedal, H.M., Temple, T., Thomas, W.J., Ocamb, C.M., Funke, C., Skillman, V., Jackson, R., Jones, G., Shrestha, G., KC, A., Dung, J.K.S., and Frost, K.E. 2023. First report of Spiroplasma citri causing disease in field-grown hemp (Cannabis sativa L.) in the Pacific Northwest. Plant Disease (in Press).

Rodriguez-Herrera, K. D., Ma, X., Swingle, B., Pethybridge, S. J., Gonzalez-Giron, J. L., Hermann, T. Q., Damann, K., and Smart, C. D. 2023. First report of cucurbit yellow vine disease caused by Serratia marcescens in New York. Plant Dis. Published Online (First Look) 24 July 2023. https://doi.org/10.1094/PDIS-06-23-1051-PDN.

Saif, M. S., Chancia, R., Hassanzadeh, A., Pethybridge, S. J., Murphy, S. M., and van Aardt, J. 2023. Forecasting table beet root yield from spectral and textural features from hyperspectral UAS imagery. Remote Sensing 15:794. https://doi.org/10.3390/rs15030794.

Savary, S., (coordination team: Savary, S., Andrivon, D., Esker, P. D., Frey, P., Huberli, D., Kumar, J., McDonald, B. A., McRoberts, N., Nelson, A., Pethybridge, S. J., Rossi, V., Schreinemachers, P., and Willocquet, L.) 2023. A global assessment of the state of plant health. Plant Dis. PDIS-01-23-0166-FE. Published First Look 12 May 2023. https://doi.org/10.1094/PDIS-01-23-0166-FE.

Sharma, S., Strickland, D. A., Hay, F. S., and Pethybridge, S. J. 2023. First report of halo blight on hop (Humulus lupulus) caused by Diaporthe humulicola in New York. Plant Dis. 107:216. https://doi.org/10.1094/PDIS-01-22-0202-PDN

Smith Becker, J., Ruegger, P., Borneman, J., and Becker, J.O. 2023. Indigenous populations of a biological control agent in agricultural field soils predicted suppression of a plant pathogen. Phytopathology. Doi:10.1094/PHYTO-07-23-0221-R

Ulbrich TC, Rivas-Ubach A, Tiemann LK, Friesen ML, Evans SE. Plant root exudates and rhizosphere bacterial communities shift with neighbor context. Soil Biology and Biochemistry. 2022 Sep 1;172:108753.

Wen, T., Ding, Z., Thomashow, L.S., Hale, L.E., Yang, S., Xi, P., Liu, X., Wang, H., Shen, Q., and Yuan, J. 2023. Deciphering the mechanism of fungal pathogen-induced disease-suppressive soil. New Phytologist. 238(6):2634-2650. https://doi.org/10.1111/nph.18886.

White III RA, Garoutte A, Mclachlan EE, Tiemann LK, Evans S, Friesen ML. Genome-Resolved Metagenomics of Nitrogen Transformations in the Switchgrass Rhizosphere Microbiome on Marginal Lands. Agronomy. 2023 May 3;13(5):1294.

Yin, C., Hagerty, C., and Paulitz, T.C. 2022. Synthetic microbial consortia derived from rhizosphere soil protect wheat against a soilborne fungal pathogen. Frontiers in Microbiology. 13. Article 908981. https://doi.org/10.3389/fmicb.2022.908981.

Yin, C., Schlatter, D.C., Hagerty, C., Hulbert, S.H., Paulitz, T.C. 2023. Disease induced assemblage of the rhizosphere fungal community in successive plantings of wheat. Phytobiomes Journal. 7 (1):100-112. https://doi.org/10.1094/PBIOMES-12-22-0101-R.

Book Chapters

Meeting presentations, abstracts and proceedings

Adams, A. K, Brandon D Kristy, Myranda S Gorman, Alhagie K Cham, Bode A Olukolu (2022). OmeSeq-qRRS/Qmatey-A platform for broad-spectrum, quantitative, and strain-level metagenomic profiling. Microbiome, Cold Spring Harbor Laboratory.

Barnes, E. M., Yin, C., Schlatter, D., Hao, P., Willmore, C., Paulitz, T., and Tringe, S. G. 2023 The Root Microbiome of Camelina in the Dryland Wheat Production Areas of Eastern Washington. Poster presented at Annual Meeting of American Society of Microbiology, Houston, TX, June 15-19, 2023.

Becker, S.J., J. Borneman, P. Ruegger, and J.O. Becker 2022. Predicting specific cyst nematode suppression in California sugar beet soils. Journal of Nematology 54: no. 1, pp. 12.

Branch, E. A., and Pethybridge, S. J. 2023. Microbial communities associated with table beets from different field sites and production practices in New York State. Plant Health 2023, Denver, Colorado, 12-16 August 2023 (Poster Presentation).

Delgado, H., Camille Wendlandt, Maren L Friesen, Stephanie Porter. Loci associated with differential success in nodulating contrasting host species in naturally co-evolving legume and rhizobium populations. American Phytopathology Society Meeting Aug 2023

Eaker, A. , Richard Allen White III, Maren L Friesen. Mutalism maintenance: comparative genomics of coexisting clovers. American Phytopathology Society Meeting Aug 2023

Echeverria, D., Skillman, V., Rivedal, H.M., Temple, T., and Frost, K. 2023. Identifying biotic characteristics of soils that suppress powdery scab of potato (Solanum tuberosum L.). American Phytopathological Society Annual Meeting, August 13 – 16, Denver, CO.

Friesen, M. Can we replace synthetic nitrogen with microbes? WA SoilCon Feb 2023

Frost, K., Charlton, B., and Sathuvalli, V. Struggles with Ss and powdery scab suppression. WERA089: Potato virus and virus-like disease management working group and potato tuber necrotic virus SCRI research meeting, March 16-17, 2023, Denver, CO.

Frost, K., Klasek, S., Crants, J., Rosen, C. and Kinkel, L. 2023. Relationships between soil health, soil microbiomes, and potato yield. Annual Meeting of the Potato Association of America, July 23-27, Charlottetown, PEI, CA.

Landry, D., Alison Adams, Virginia Sykes, Tara Rickman, Heather Kelly, and Bode A. Olukolu (2022) Evaluation of Fusarium Ear Rot Resistance and Impact on Yield in non-GMO and Bt-Maize Hybrids. The Tennessee Agricultural Production Association (TAPA), Gatlinburg, TN.

Loria, K., Brockmueller, B., Darby, H., Diggins, K., Everest, E., Gomez, M., Krezinski, I., Mallory, E., Molloy, T., Moore, V., Murphy, S., Pelzer, C., Pethybridge, S. J., Ryan, M., Sharifi, A., Smith, D., and Youngerman, E. 2023. Expanding productivity and resilience of organic dry bean systems in the Northeast and upper Midwest. Bean Improvement Cooperative Conference, Greenville, SC. (Poster Presentation). 6-8 November 2023.

Luong, K. P., McFeaters, T. S., Pethybridge, S. J., and Esker, P. D. 2023. Associations of microclimates, soil, and histories, on the population structure of diversity of Sclerotinia sclerotiorum in Pennsylvania and New York. Plant Health 2023, Denver, Colorado, 12-16 August 2023 (Poster Presentation).

Luong, K. P., Pethybridge, S. J., and Esker, P. D. 2023. Developing a high-throughput method for screening fungicide sensitivity in Sclerotinia sclerotiorum. Plant Health 2023, Denver, Colorado, 12-16 August 2023 (Poster Presentation).

Moore, A., Sathuvalli, V., Frost, K., Yilma, S., Aguilar, M., and Charlton, B. 2023. Powdery scab of potato: expanding genomic resources for the pathogen and host. American Phytopathological Society Annual Meeting, August 13 – 16, Denver, CO.

Moore, A., Sathuvalli, V., Frost, K., Yilma, S., Aguilar, M., and Charlton, B. 2023. Powdery scab of potato: expanding genomic resources for the pathogen and host. Phytopathology xx(Suppl. yy):SX.YY

Odoi M, Onufrak A, Boggess S, Pantalone V, Olukolu B, Trigiano R, Hadziabdic D (2023) Compendium of plant-associated microbes on endangered whorled sunflower. American Phytopathological Society Conference, Denver, CO (August 2023).

Odoi ME, Onufrak A, Boggess SL, Pantalone V, Olukolu B, Hadziabdic D, Trigiano RN. (2022) Characterizing endophytic leaf fungal composition of whorled sunflower. Phytopathology. 112(11):178

Parks, J, Maren L Friesen. The role of microorganisms in nutrient provisioning in Peaola. WSU Plant Sciences Retreat. March 2023. Pullman, WA

Parks, J. Maren L Friesen. Microbial underpinnings of pea-canola intercropping success. MPS Seminar. Oct 2023. Pullman, WA

Paulitz, T. C. 2023. The Soil Microbiome & Soil Health. A 1.5-hour hands-on lab to growers at the Wheat Academy, Dec. 2023

Peng, H., Barnes, E. M., Yin, C., Schlatter, D., Willmore, C., Paulitz, T., Tringe, S. G., and Lu, C. 2023. The Root Microbiome of Camelina in the Dryland Wheat Production Areas of Eastern Washington. poster at the Department of Energy Biological Systems Science Division Meeting, Bethesda, MD, April 17-18, 2023.

Pethybridge, S. J., and Hay, F. S. 2023. Fight the blight: Stemphylium leaf blight, an emerging threat to United States onion production. National Allium Research Conference, San Antonio, TX.

Pethybridge, S. J., and Ryan, M. R. 2023. Breaking down the barriers to organic no-till soybean and dry bean production through improved white mold management. USDA NIFA Organic Programs Project Directors Meeting (Poster and Oral Presentation). Pp. 73-75.

Petipas, R.H., E.A. McNeil, J.F. Tabima, M.L. Friesen, and C.J. Jack. Prairie soil promotes wheat growth but are the effects caused by soil microbes? American Society of Naturalists Meeting, Virtual Asilomar, Asilomar, CA. January 2023

Pineros-Guerrero, N., Hay, F. S., Heck, D. W., Klein, A., Hoepting, C. A., and Pethybridge, S. J. 2023. Determining the contribution of onion transplants to the population genetics of Stemphylium vesicarium in New York, USA using microsatellite markers. Proc. International Congress of Plant Pathology, Lyon, France. 20-25 August 2023.

Ryan, M. R., Allen, J., Brockmueller, B., Loria, K., McFadden, E., Menalled, U. D., Pelzer, C. J., Pethybridge, S. J., Rowland, A., Sharifi, A., Silva, E. M., Wayman, S., and Youngerman, E. 2023. Taking out tillage with cover crops. Proc. Northeast Cover Crops Council Annual Meeting, Portland, Maine, 16 February 2023 (Poster Presentation).

Saif, M. S., Chancia, R. A., Pethybridge, S. J., Murphy, S. P., Hassanzadeh, A., and van Aardt, J. 2023. Predicting table beet yield with hyperspectral UAS imagery. STRATUS Conference, Rochester, NY, 22-24 May 2023.

Saif, M. S., Chancia, R., Sharma, P., Murphy, S. P., Pethybridge, S. J., and van Aardt, J. 2023. Detection of Cercospora leaf spot disease in table beets from UAS multispectral imagery. Proc. International Congress of Plant Pathology, Lyon, France, 20-25 August 2023.

Sauceda Padron, A. Y., Sharma, P., and Pethybridge, S. J. 2023. Determining the mating types in Cercospora beticola populations from a table beet field. Proc. 2023 Cornell AgriTech Summer Scholars Program, Cornell University, Geneva, New York, Abstract.

Sharma, P., Murphy, S., Kikkert. J. R., and Pethybridge, S. J. 2023. Effect of residue management on Cercospora leaf spot of table beet and microbiome. Proc. International Congress of Plant Pathology, Lyon, France. 20-25 August 2023.

Thornton, M., Olsen, N., Miller, J., Frost, K., Goyer, A., and Qin, R. 2023. Is plant maturity a reliable indicator of bruise susceptibility? Annual Meeting of the Potato Association of America, July 23-27, Charlottetown, PEI, CA.

Webster, C., Anita Paneru, Won-Jun Kim, Abdelrhman Mohamed, Ibrahim Bozyel, Eduardo Sanchez, Natalie Sanchez, Maren L. Friesen, and Haluk Beyenal. Electrochemically active biofilm in soil. EMSL User Meeting: Visualizing Chemical Processes Across the Environment, October 3–5, 2023

Yin, C., Larson, M., Lahr, N., and Paulitz, T. 2023. Wheat Rhizosphere-Derived Bacteria Protect Soybean Roots from Fusarium graminearum Infection. Poster presented at the Annual Meeting of the American Phytopathological Society, Denver, CO, Aug. 13-16, 2023.

Technical Bulletins and Extension Publications

Aegerter, B.J., Becker, J.O., Davis, R.M., Goodell, P.B., Henderson, D.W., Lanini, W.T., Natwick, E.T., Stapleton, J.J., Stoddard, C.S., Turini, T.A., Westerdahl, B.B. 2022.

Becker, J. O. Agriculture: Pest Management Guidelines Cucurbits. UC IPM Pest Management Guidelines: Cucurbits. UC ANR Publication 3445. Davis, CA. https://ipm.ucanr.edu/agriculture/cucurbits/

Becker, J.O. and Smith Becker, J. 2022. 35th Anniversary of the Nematode Quarantine Facility at the University of California Riverside. Topics in Subtropics 22, 7-8.

Becker, J.O. and Westerdahl, B. 2023. Citrus: Nematodes. Pp. 183-185. (revision), UC IPM Pest Management Guideline: Citrus, UC ANR Publication 3441, Publication URL:

Branch, E. B., Pethybridge, S. J., Murphy, S. M., and Kikkert. J. R. 2023. Efficacy of fungicides for control of Rhizoctonia damping-off and root rot in table beet, 2022. Plant Dis. Manage. Rep. 17:V026.

Damann, K., and Pethybridge, S. J. 2023. Hoop pending for covered agriculture. YouTube Video. 20 January 2023. The Current Cucurbit Website.

Damann, K., and Pethybridge, S. J. 2023. On-farm trials: three years of grower’s feedback. pending for covered agriculture. YouTube Video. 20 January 2023. The Current Cucurbit Website. 20 January 2023. The Current Cucurbit Website.

Gonzalez, J., Gleason, M. R., Gonthier, D., Pethybridge, S. J., Nair, A. J., Bessin, A., Williams, M., Zhang, W., Dantzker, H., Fiske, A., Diggins, K., Mphande, K., Badilla, S., and Damann, K. 2023. Mesotunnels for improved management of cucurbit pests and diseases: Tips for growers.

Gonzalez, J., Gonthier, D., Pethybridge, S. J., Bessin, R., Nair, A., Zhang, W., Cheng, N., Fiske, K., Gauger, A., Damann, K., Murphy, S., Badilla, S., Mphande, K., and Gleason, M. 2023. Mesotunnels for organic management of cucurbit pests and diseases: Tips for growers. NCPA 038. North Central IPM Center. Pp. 8.

Govinda, S., Ocamb, C.M., Rivedal, H., KC, A., Dung, J., Frost, K., Wysocki, D., Reitz, S., and Steiner, J. 2022. State-wide needs assessment for the hemp industry in Oregon. Oregon State University Extension and Experiment Station Communications Publication EM9417. https://extension.oregonstate.edu/catalog/pub/em-9417-statewide-needs-assessment-hemp-industry-oregon. Role: Participated in the needs assessment activities, wrote and edited content.https://ipm.ucanr.edu/agriculture/citrus/nematodes/

Kikkert. J. R., Lund, M., and Pethybridge, S. J. 2023. What to do after a bad Sclerotinia white mold season. Cornell VegEdge 19(21):9.VegEdge newsletter – Vol. 19, Iss. 21, 8/30/2023 (cornell.edu)

Pethybridge, S. J. 2023. Crop insights – beets. Cornell VegEdge 19(15):5.VegEdge newsletter – Vol. 19, Iss. 15, 7/19/2023 (cornell.edu)

Pethybridge, S. J. 2023. White mold in tomato. Long Island Fruit and Vegetable Update 13 (29 June 2023). Cornell Cooperative Extension, Suffolk County. Pp. 2.

Pethybridge, S. J., and Damann, K. 2023. Feasibility of mesotunnels for muskmelon production. Mid-Atlantic Fruit and Vegetable Growers Convention, Hershey, Pennsylvania. 31 January 2022. Pp. xxx.

Pethybridge, S. J., and Murphy, S. 2023. Efficacy of fungicides for white mold control in snap bean, 2022. Plant Dis. Manage. Rep. 17:V013.

Pethybridge, S. J., and Murphy, S. M. 2023. Efficacy of fungicides for white mold control in snap bean. Mid-Atlantic Fruit and Vegetable Growers Convention, Hershey, Pennsylvania. 31 January 2022. Pp. xxx.

Pethybridge, S. J., Kikkert, J. R., and Telenko, D. 2023. Keep watch for tar spot in sweet corn. Cornell VegEdge 19(18):1-3.VegEdge newsletter – Vol. 19, Iss. 18, 8/9/2023 (cornell.edu)

Pethybridge, S. J., Murphy, S. M., and Damann, K. 2023. Feasibility of Mesotunnels for muskmelon production. Mid-Atlantic Fruit and Vegetable Growers Convention, Hershey, Pennsylvania. 31 January 2022. Pp. 38-40. http://www.pvga.org/23-proceedings/.

Pethybridge, S. J., Murphy, S. M., and Kikkert, J. R. 2023. Manipulating table beet and carrot production with plant growth regulators. Cornell VegEdge 19(1):6-VegEdge newsletter – Vol. 19, Iss. 1, 1/4/2023 (cornell.edu).

Pethybridge, S. J., Murphy, S. P., and Kikkert. J. R. 2023. Efficacy of conventional and OMRI-listed fungicides for Cercospora leaf spot control in table beet (2023 results). Cornell VegEdge 19(24):4-5.VegEdge newsletter – Vol. 19, Iss. 24, 11/1/2023 (cornell.edu)

Pethybridge, S. J., Murphy, S. P., and Kikkert. J. R. 2023. Efficacy of conventional and OMRI-listed fungicides for Cercospora leaf spot control in table beet. UMass Extension Vegetable Notes (November 9, 2023). VegNotes 35(24):4-6.november_9_2023_vegetable_notes.pdf (umass.edu)

Pethybridge, S. J., Murphy, S. P., Lund, M., and Kikkert, J. R. 2023. How long do sclerotia that cause white mold survive in central New York? Cornell VegEdge 19(25):4-5.VegEdge newsletter – Vol. 19, Iss. 25, 12/6/2023 (cornell.edu)

Rodriguez-Herrera, K. D., Ma, X., Swingle, B., Pethybridge, S. J., Reiners, S., Nault, B., Day, C. T. C., DuBeer, C., Herrmann, T. Q., and Smart, C. D. 2023. A new bacterial disease of cucurbits in NY: Cucurbit yellow vine disease caused by Serratia marcescens. Cornell AgriTech Factsheet.

Extension Talks/Field Days/Workshops/Consultations

Becker, J. S. P. Ruegger, J. Borneman, and J.O. Becker, Forecasting Sugar Beet Cyst Nematode Suppression in Imperial Valley Soils. University of California, Agricultural and Natural Resources Division, Statewide Conference, Fresno, CA, April 24-27, 2023.

Becker, J.O. and A. Ploeg. Non-fumigant nematicides efficacy improved against RKN by soil wetting agent. California Fresh Market Carrot Research Symposium; by Zoom, February 14, 2023.

Becker, J.O.. Avicta seed treatment: two with one blow. The 68^th Annual Conference on Soilborne Plant Pathogens and the 53^rd California Nematology Workshop 2023, Salinas, CA. March 28-30.

Borneman, J. and J.O. Becker Predicting Nematode Suppression in the Imperial Valley. Sugarbeet Research Board Meeting, Holtville, CA, March 22, 2023.

Echeverria, D., and Frost, K.E. Identifying soils and soil properties suppressive to powdery scab. OSU-HAREC Potato Field Day, Hermiston, OR, June 21, 2023 (~100)

Frost, K. E. Hermiston Farm Fair, General Session (AD). Twelve invited speakers. (~80 attendees)

Frost, K.E. Above ground problems with potato plants in the seed lots. First rating of the Washington State potato seed lot trial, Othello, WA, June 6, 2023 (~50)

Frost, K.E. Enhancing potato productivity through management practices that support soil health. 2023 Southern Rocky Mountain Ag Conference, Monta Vista, CO, February 8, 2023 (~115).

Frost, K.E. Managing soil health in potatoes: opportunities and challenges. Washington State Potato Commission: Potato Summit. Spokane, WA, December 12, 2023. (~35).

Frost, K.E. Plant disease identification, diagnosis, and management. Hermiston Ag and City Expo, Hermiston, OR, February 24, 2023. (~25).

Frost, K.E. Plant pathology program updates 2023. OSU-HAREC Potato Field Day, Hermiston, OR, June 21, 2023 (~100)

Frost, K.E. Potato soil health and soilborne disease management. Hermiston Farm Fair, Hermiston, OR, November 29, 2023 (~75).

Frost, K.E. Potato soil health: where have we been and where are we going? Washington-Oregon Potato Conference, Kennewick, WA, January 26, 2023 (~200).

Frost, K.E. Powdery scab, the environment, and implications for disease management. Hermiston Farm Fair, Hermiston, OR, November 29, 2023 (~90).

Frost, K.E. The soil environment and its effect on powdery scab of potato. 2023 Southern Rocky Mountain Ag Conference, Monta Vista, CO, February 7, 2023 (~75).

Frost, K.E., Harris, M., Mesko, J., Pavelski, R., Phillips, M., and Pink, M. Round table discussion with the Spudman Dream Team about production challenges today, how they are handled and what the future of the potato industry looks like. Panel discussion hosted by Spudman Magazine (Zoom), February 16, 2023 (~30).

Moore, A., Sathuvalli, V., and Frost, K.E. Mapping powdery scab resistance in potato. OSU-HAREC Potato Field Day, Hermiston, OR, June 21, 2023 (~100)

Parks, J, Maren L Friesen. Testing microbial mechanisms of nitrogen provisioning to canola. WA Oilseed Commission Annual Meeting. Feb 2023 Pullman, WA

Paulitz, T. C. and Garland-Campbell, K. 2023. Fusarium Crown Rot of Wheat- It’s Everywhere and Persistent. Wheat Life, Dec. 2023.

Paulitz, T. C. Fusarium Crown Rot, WSU Wheat Beat Podcast, recorded Dec. 2023.

Paulitz, T. C. Presented talk on new research at the AgExpo Farm Forum, Spokane, WA, Feb. 7, 2023.

Pethybridge, S. J. 2023. ECOBean – Industry Advisory Panel (by zoom). Attendees = 20. Duration = 2 hours. Total contact = 40 hours. 24 March 2023.

Pethybridge, S. J. 2023. Efficacy of products for white mold control in dry bean in New York. NYS Dry Bean Council Twilight Meeting, Geneva, New York. Attendees = 25. Duration = 2 h. Total contact = 50 hours. 26 September 2023.

Pethybridge, S. J. 2023. Objective 2 CC_SCRI Meeting. Activities in New York. CC_SCRI Project Advisory Panel (by zoom). Attendees = 20. Duration = 60 min. Total contact = 20 hours. 20 September 2023.

Pethybridge, S. J. 2023. Optimizing control of Cercospora leaf spot with improved scouting and disease forecasting. New York Processing Vegetable Industry Roundtable Meeting, Batavia, New York. Attendees = 60. Duration = 30 min. Total contact = 30 hours. 15 March 2023.

Pethybridge, S. J. 2023. Potential for gibberellic acid 3 to manipulate table beet and carrot growth and yield. New York Processing Vegetable Industry Roundtable Meeting, Batavia, New York. Attendees = 60. Duration = 30 min. Total contact = 30 hours. 15 March 2023.

Pethybridge, S. J. 2023. Soilborne diseases of vegetables in New York. W5147 Multistate Project (by zoom). Attendees = 30. Duration = 60 min. Total contact = 30 h. 5 December 2023.

Pethybridge, S. J. 2023. Towards a durable management strategy for white mold in dry beans in New York. NYS Dry Bean Council, Geneva, New York. Attendees = 50. Duration = 30 min. Total contact = 25 hours. 22 March 2023.

Pethybridge, S. J. 2023. When push comes to shove…what really works for organic disease management (Invited Presentation). Sugarloaf Mountain, Maine. Attendees = 50. Duration = 3 hours. Total contact = 150 hours. 5 November 2023.

Pethybridge, S. J., and Murphy, S. M. 2023. Feasibility of Mesotunnels for muskmelon production. Empire Expo, Syracuse, NY. Attendees = 100. Duration = 30 min. Total contact = 50 hours. 6 February 2023.

Pethybridge, S. J., and Ryan, M. R. 2023. Breaking down the barriers to organic no-till soybean and dry bean production through improved white mold management. USDA NIFA Project Directors Meeting. Attendees = 120. Duration = 30 min. Total contact = 60 hours. 18 April 2023.

Pethybridge, S. J., Hay, F. S., and Heck, D. W. 2023. Stemphylium leaf blight of onions in New York. Wisconsin Muck Growers Conference (by zoom). Attendees = 100. Duration = 30 min. Total contact = 50 hours. 8 February 2023.

Pethybridge, S. J., Murphy, S. M., and Damann, K. 2023. Feasibility of Mesotunnels for muskmelon production. Mid-Atlantic Fruit and Vegetable Growers Convention, Hershey, Pennsylvania. Attendees = 100. Duration = 30 min. Total contact = 50 hours. 31 January 2023.

Ploeg, A. and J.O. Becker. An unusual root-knot nematode on an unusual plant. The 68^th Annual Conference on Soilborne Plant Pathogens and the 53^rd California Nematology Workshop 2023, Salinas, CA, March 28-30.

Ploeg, A. and J.O. Becker. Nematode problems in carrots and planned trials. Carrot industry research priorities meeting; by Zoom, January 24, 2023.

Rosen, C., Frost, K.E., and McIntosh, C. Recent developments in improving soil health for potato production. Potato Expo 2023, Aurora, CO, January 5, 2023 (~100).

Smith Becker, J. J. Borneman, and J.O. Becker, Cyst nematode suppression prediction. California Nematology Workgroup Meeting, Salinas, CA, March 28, 2023.

Upadhaya, S., Mayad, E.H., Potter, T., Gleason, C., Griffin LaHue, D., Frost, K., Wheeler, D., and Paulitz, T. Comparative analysis of soil health status in agricultural and native soils in PNW region. WSU Potato Field Day, Othello, WA, June 22, 2023 (~50)

Westphal, A., Z.T.Z. Maung, and J.O. Becker, Host response to Meloidogyne floridensis of selected California perennial crops. California Nematology Workgroup Meeting, Salinas, CA, March 28, 2023.