Dr. Kari L. Arnold

UCCE Stanislaus County Orchard and Vineyard Systems Advisor
University of California Cooperative Extension
3800 Cornucopia Way
Suite A
Modesto, CA 95358
209-525-6821
klarnold@ucanr.edu Create VCard

Education

Ph.D. Plant Pathology, University of California, Davis. 2016
M.S. Plant Pathology, University of California, Davis. 2014
B.S. Plant Science, University of Nebraska, Lincoln. 2009

Discipline

Pomology

Specialty

Walnuts, Cherries, Grapes and Apricots

Bibliography

Peer Reviewed

  • Browne, Greg T.; Hasey, Janine K.; Ott, Natalia J.; Forbes, Holly; Arnold, Kari; and Milliron, Luke (2021). Flooding by California Rivers Results in Walnut Scion Infections by Species of Phytophthora. Plant Health Progress. American Phytopathological Society. 22:3, 368-373. 2/17/2021.
  • Al Rwahnih, Maher; Diaz-Lara, Alfredo; Arnold, Kari; Cooper, Monica; Smith, Rhonda; Zhuang, George; Battany, Mark Z.; Bettiga, Larry; Rowhani, Adib; Golino, Deborah (2020). Incidence and Genetic Diversity of Grapevine Pinot gris Virus in California. American Journal of Enology and Viticulture.
  • Arnold, K.; McRoberts, N.; Cooper, M.; Golino, D. (2019). Virus surveys of commercial vineyards show value of planting certified vines. California Agriculture. 73:2, 90-95.
  • Diaz-Lara, A.; Klaassen, V.; Stevens, K.; Sudarshana, M.R.; Rowhani, A.; Maree, H.J.; Chooi, Kar Mun; Blouin, A.G.; Habili, N.; Song, Y.; Aram, K.; Arnold, K. L.; Cooper, M.L.; Wunderlich, L.; Battany, M.C.; Bettiga, L.J.; Smith, R.J.; Bester, R.; Xiao, H.; Meng, B.; Preece, J.E.; Golino, D.A.; Al Rwahnih, M. (2018). Characterization of grapevine leafroll-associated virus 3 genetic variants and application towards RT-qPCR assay design. PLOS One. December 12.
  • Rowhani, A.; Daubert, S.; Arnold, K.; Al Rwahnih, M.; Klaassen, V.; Golino, D.; Uyemoto, J.K. (2018). Synergy between grapevine vitiviruses and grapevine leafroll viruses. European Journal of Plant Pathology. 151, 919-925. February 6.
  • Arnold, K.; Golino, D.; McRoberts, N. (2017). A Synoptic Analysis of the Temporal and Spatial Aspects of Grapevine Leafroll Disease in a Historic Napa Vineyard and Experimental Vine Blocks. Phytopathology. The American Phytopathological Society. 107:4, 418-426. April.

Non-Peer Reviewed

  • Shackel, Ken; Fulton, Allan; Arnold, Kari; Lampinen, Bruce (2021). Early Season Water Management And Yield Limiting Factors In Walnut. Walnut Research Reports. 71-108.
  • Nouri, Mohamed T.; Trouillas, Florent; Arnold, Kari; and Michailides, Themis (2021). Investigating Botryosphaeria/Phomopsis Diseases of Walnuts in San Joaquin and Stanislaus Counties, California. Walnut Research Reports. 269-286.
  • Shackel, Ken; Fulton, Allen; Arnold, Kari; Lampinen, Bruce; Milliron, Luke (2021). Pulling the Trigger for the Start of Irrigation in the Spring: Too Much Too Soon for Walnuts? The Scoop. 26:1, 3-6. April.
  • Nouri, Mohamed; Arnold, Kari; Olaya, Cristian; Sudarshana, Mysore R. (2021). Report of Cherry X-Disease Phytoplasma in the Northern San Joaquin Valley. The Scoop. 26:1, 7-8. April, 2021.
  • Arnold, Kari; Crisosto, Carlos; Nouri, Mohamed T.; Green, Daniel; Vasquez-Mendoza, Jacqueline (2021). The Evaluation of 1-Methylcyclopropene in Reducing Brown, Stuck Hulls and Dark Meats in Walnuts to Increase Quality in Older Orchards. Walnut Research Reports. 151-152.
  • Arnold, Kari; Michailidies, Themis (2021). Update: Managing Walnut Mold. The Scoop. 1-2. September, 2021.
  • Arnold, Kari; Nouri, Mohamed (2021). Walnut Updates. The Scoop. 26:2. October, 2021.
  • Niu, Haoyu; Zhao, Tiebiao; Zuber, Cameron; Vasquez-Mendoza, Jacqueline; Doll, David; Arnold, Kari; Chen, YangQuan (2020). A low-cost stem water potential monitoring method using proximate sensor and scikit-learn classification algorithms. American Society for Agricultural and Biological Engineers 2020 Annual Meeting. American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org. July.
  • Arnold, K. (2020). Crown Gall with Kari Arnold.P. Gordon. Oct 6. www.growingthevalleypodcast.com
  • Arnold, Kari; Shackel, Ken; Lampinen, Bruce; Fulton, Allen (2020). Delayed irrigation in walnuts. The Scoop. UCCE Stanislaus County. 25.2, 1-2. April.
  • Shackel, Ken; Fulton, Allan; Arnold, Kari; Lampinen, Bruce; Milliron, Luke; Wang, Ying-Tsui; Grosskopf, Joseph (2020). Early Season Water Management and Yield Limiting Factors in Walnut. Walnut Research Reports.
  • Arnold, Kari; Doll, David; Lampinen, Bruce; Zuber, Cameron; Michailides, Themis (2020). Integration of row spacing, tree spacing, and rootstocks for walnut production. American Society for Horticultural Science Annual Conference. Orlando, FL. August.
  • Arnold, Kari; Doll, David; Lampinen, Bruce; Robinson, Chris (2020). Integration of Row Spacing, Tree Spacing, and Rootstocks for Walnut Production. Walnut Research Reports.
  • Arnold, Kari; Michailides, Themis (2020). Managing Walnut Mold. The Scoop. UCCE Stanislaus County. 25.3, 3-4. July.
  • Arnold, Kari; Doll, David; Lampinen, Bruce; Robinson, Chris (2020). The incidence of crown gall in a recently established experimental walnut rootstock block. Orchard Pest and Disease Management 94th Annual Conference. Portland, OR. January.
  • Arnold, Kari (2020). Things to Consider When Establishing a New Walnut Orchard. The Scoop. 24.5, 5-6. December, 2020.
  • Arnold, Kari (2020). Walnut Rootstocks. The Scoop. UCCE Stanislaus County. 25.3, 4-5. July.
  • Shackel, Ken; Fulton, Allan; Arnold, Kari; Lampinen, Bruce (2019). Early Season Water Management in Walnut. Walnut Research Reports. 95-105.
  • Arnold, Kari; Doll, David; mLampinen, Bruce; Robinson, Chris (2019). Integration of Row Spacing, Tree Spacing, and Rootstocks for Walnut Production. Walnut Research Reports. 149-162.
  • Suvočarev, Kosana; Marino, Giulia; Arnold, Kari; Zaccaria, Daniele; Little, Cayle; Bali, Khaled; Sanden, Blake; Snyder, Richard L. (2019). Surface renewal measurements in roughness sublayer for water management in irrigated orchards. American Geophysical Union 2019 Centennial meeting.
  • Arnold, Kari (2019). University of California Cooperative Extension Advisors. Stanislaus County Agricultural Report. 24-25. http://www.stanag.org/pdf/cropreport/cropreport2019.pdf
  • Arnold, Kari (2019). Walnut News & Fruit for Thought. Summer.
  • Arnold, Kari; Chiu, Joanna; Abrieux, Antoine; Wilson, Derek; Rijal, Jhalendra (2018). Adapting Opto-Electronic Sensors to Detect Navel Orangeworm by Wing Beat Frequency. Walnut Research Reports. 265-268.
  • Arnold, K. (2018). Declining Walnuts, What's the Deal? West Coast Nut. 22-26. September. https://www.yumpu.com/en/document/fullscreen/61999856/wcn-sep18-final-e
  • Shackel, Ken; Fulton, Allan; Arnold, Kari; Lampinen, Bruce (2018). Evaluating Physiological Indicators for Early Season Water Management in Walnut. Walnut Research Reports.
  • Arnold, Kari; Doll, David; Lampinen, Bruce; Robinson, Chris (2018). Integration of Row Spacing, Tree Spacing, and Rootstocks for Walnut Production. Walnut Research Reports. 167-176.
  • Arnold, K. (2018). Planting Walnut Orchards. Pacific Nut Producers. January.
  • Arnold, Kari; Rijal, Jhalendra (2018). Walnut News & Fruit for Thought. Spring.

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