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ARS Home » Pacific West Area » Corvallis, Oregon » Forage Seed and Cereal Research Unit » People & Locations » Hannah Rivedal
Hannah Rivedal (PhD)
Forage Seed and Cereal Research Unit
Research Plant Pathologist

Phone: (541) 738-4144
Fax:

(Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)

Projects
Developing Decision Support Tools to Incorporate Hemp into Existing Farming Enterprises
In-House Appropriated (D)
  Accession Number: 438146
Optimizing and Stabilizing Economic and Ecological Sustainability of Pacific Northwest Seed Cropping Systems Under Current and Future Climate Conditions
In-House Appropriated (D)
  Accession Number: 445390
Professional Support for the 2024 Annual Meeting of the Pacific Division of the American Phytopathological Society
Grant (G)
  Accession Number: 444904
Determining the Predominant Industrial Hemp Diseases to Assist Breeding and Management Efforts
Non-Assistance Cooperative Agreement (S)
  Accession Number: 440965
Understanding Pacific Northwest Turfgrass Plant Parasitic Nematode Communities to Improve Management Efficiency
Trust Fund Cooperative Agreement (T)
  Accession Number: 443397

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Analysis of soft rot Pectobacteriaceae population diversity in US potato growing regions between 2015 and 2022 - (Peer Reviewed Journal)
Detection of Podosphaera macularis in air samples by quantitative PCR Reprint Icon - (Peer Reviewed Journal)
Gent, D.H., Adair, N.L., Hatlen, R., Miles, T.D., Richardson, B.J., Rivedal, H.M., Ross, C., Wiseman, M.S. 2024. Detection of Podosphaera macularis in air samples by quantitative PCR. Plant Disease. https://doi.org/10.1094/PDIS-04-24-0894-RE.
Plant-parasitic nematodes associated with grasses grown for seed in the Willamette Valley of Oregon Reprint Icon - (Peer Reviewed Journal)
Rivedal, H.M., Zasada, I.A., Temple, T.N., Peetz, A.B., Nunez Rodriguez, L.A., Starchvick, R.J., Braithwaite, E.T. 2024. Plant-parasitic nematodes associated with grasses grown for seed in the Willamette Valley of Oregon. Journal of Nematology. 56:1. https://doi.org/10.2478/jofnem-2024-0020.
Comparison of molecular and morphological identification methods for Anguina seed gall nematodes in Oregon grasses grown for seed Reprint Icon - (Peer Reviewed Journal)
Rivedal, H.M., Temple, T.N., Starchvick, R.J., Braithwaite, E.T., Lowder, S.R., Dorman, S.J., Nunez Rodriguez, L.A., Peetz, A.B., Zasada, I.A. 2024. Comparison of molecular and morphological identification methods for Anguina seed gall nematodes in Oregon grasses grown for seed. PhytoFrontiers. https://doi.org/10.1094/PHYTOFR-01-24-0001-R.
First report of Meloidogyne hapla on hemp (Cannabis sativa) in Oregon Reprint Icon - (Peer Reviewed Journal)
Nunez-Rodriguez, L., Rivedal, H.M., Peetz, A.B., Ocamb, C.M., Zasada, I.A. 2024. First report of Meloidogyne hapla on hemp (Cannabis sativa) in Oregon. Journal of Nematology. 56(1). Article e2024-1. https://doi.org/10.2478/jofnem-2024-0008.
Characterization of powdery mildew fungi affecting hemp in the Pacific Northwest Reprint Icon - (Peer Reviewed Journal)
Rivedal, H.M., Wiseman, M.S., Richardson, B.J., Massie, S.T., Garfinkel, A.R., Ocamb, C.M., Gent, D.H. 2024. Characterization of powdery mildew fungi affecting hemp in the Pacific Northwest. PhytoFrontiers. 4(2):205-212. https://doi.org/10.1094/PHYTOFR-07-23-0099-R.
First report of Spiroplasma citri associated with disease symptoms in field-grown hemp (Cannabis sativa) in the Pacific Northwest Reprint Icon - (Peer Reviewed Journal)
Rivedal, H.M., Temple, T.N., Thomas, W.J., Ocamb, C.M., Funke, C., Skillman, V.P., Jones, G., Shrestha, G., KC, A., Dung, J.K., Frost, K.E. 2024. First report of Spiroplasma citri associated with disease symptoms in field-grown hemp (Cannabis sativa) in the Pacific Northwest. Plant Disease. 108(1):202. https://doi.org/10.1094/PDIS-07-23-1419-PDN.
Seed gall nematodes in grasses grown for seed: Survey and identification methods Reprint Icon - (Abstract Only)
Rivedal, H.M., Zasada, I.A. 2023. Seed gall nematodes in grasses grown for seed: Survey and identification methods. Grow: Plant Health Exchange. https://doi.org/10.1094/GROW-REG-07-23-001.
Diagnostic guide: Fusarium head blight of cereal grains Reprint Icon - (Peer Reviewed Journal)
Hagerty, C.H., Namdar, G.F., Rivedal, H.M., Wen, N., Yin, C. 2023. Diagnostic guide: Fusarium head blight of cereal grains. Plant Health Progress. 24(2):252-257. https://doi.org/10.1094/PHP-10-22-0110-DG.
First report of the root-lesion nematode, Pratylenchus penetrans, parasitizing hemp (Cannabis sativa) in Washington Reprint Icon - (Peer Reviewed Journal)
Zasada, I.A., Nunez-Rodriguez, L., Rivedal, H.M., Peetz, A.B., Ocamb, C. 2023. First report of the root-lesion nematode, Pratylenchus penetrans, parasitizing hemp (Cannabis sativa) in Washington. Plant Health Progress. https://doi.org/10.1094/PHP-12-22-0122-BR.
First report of Pyricularia grisea causing gray leaf spot of perennial ryegrass (Lolium perenne L.) in Oregon Reprint Icon - (Peer Reviewed Journal)
Braithwaite, E., Wang, R., Kowalewski, A., Tabima, J.F., Temple, T.N., Rivedal, H.M. 2023. First report of Pyricularia grisea causing gray leaf spot of perennial ryegrass (Lolium perenne L.) in Oregon. Plant Health Progress. 24(3):382-385. https://doi.org/10.1094/PHP-11-22-0119-BR.
Comparing methods to quantify cover in turfgrass research Reprint Icon - (Peer Reviewed Journal)
Kowalewski, A.R., Schmid, C.J., Braithwaite, E.T., McNally, B.C., Elmore, M.T., Mattox, C.M., McDonald, B.W., Wang, R., Lambrinos, J.G., Fitzpatrick, G., Rivedal, H.M. 2023. Comparing methods to quantify cover in turfgrass research. Crop Science. 63:1581-1591. https://doi.org/10.1002/csc2.20908.
A quantitative PCR assay for detection and quantification of Fusarium sambucinum Reprint Icon - (Peer Reviewed Journal)
Thomas, W.J., Borland, T.G., Bergl, D.D., Claassen, B.J., Flodquist, T.A., Montgomery, A.S., Rivedal, H.M., Woodhall, J., Ocamb, C.M., Gent, D.H. 2022. A quantitative PCR assay for detection and quantification of Fusarium sambucinum. Plant Disease. 106:2601-2606. https://doi.org/10.1094/PDIS-02-22-0269-RE.
Horizontal transmission and expression of Epichloë typhina in orchardgrass (Dactylis glomerata) Reprint Icon - (Peer Reviewed Journal)
Merlet, L., Dombrowski, J.E., Bushman, B.S., Gilmore, B.S., Rivedal, H.M., Martin, R.C. 2022. Horizontal transmission and expression of Epichloë typhina in orchardgrass (Dactylis glomerata). European Journal of Plant Pathology. 163:415–428. https://doi.org/10.1007/s10658-022-02485-y.
An overview of pathogens associated with biotic stresses in hemp crops in Oregon, 2019-2020 Reprint Icon - (Peer Reviewed Journal)
Rivedal, H.M., Funke, C.N., Frost, K.E. 2022. An overview of pathogens associated with biotic stresses in hemp crops in Oregon, 2019-2020. Plant Disease. 106(5):1334-1340. https://doi.org/10.1094/PDIS-11-21-2415-SR.
First report of Pectobacterium versatile causing potato soft rot in Oregon and Washington Reprint Icon - (Peer Reviewed Journal)
Ma, X., Brazil, J., Rivedal, H.M., Perry, K.L., Frost, K., Swingle, B.M. 2022. First report of Pectobacterium versatile causing potato soft rot in Oregon and Washington. Plant Disease. https://apsjournals.apsnet.org/doi/epdf/10.1094/PDIS-08-21-1635-PDN.
Diversity and pathogenicity of Pectobacterium species responsible for causing soft rot and blackleg of potato in the Columbia Basin Reprint Icon - (Peer Reviewed Journal)
Rivedal, H.M., Brazil, J.A., Frost, K.E. 2021. Diversity and pathogenicity of Pectobacterium species responsible for causing soft rot and blackleg of potato in the Columbia Basin. American Journal of Potato Research. 98:267-284. https://doi.org/10.1007/s12230-021-09841-4.