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ARS Home » Pacific West Area » Corvallis, Oregon » Horticultural Crops Disease and Pest Management Research Unit » Research » Research Project #432677

Research Project: Development of Knowledge-based Approaches for Disease Management in Small Fruit and Nursery Crops

Location: Horticultural Crops Disease and Pest Management Research Unit

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)

Cool temperatures favor growth of Oregon isolates of Calonectria pseudonaviculata and increase severity of boxwood blight on two Buxus cultivars Reprint Icon - (Peer Reviewed Journal)
Weiland, G.E., Ohkura, M., Scagel, C.F., Davis, E.A., Beck, B.R. 2022. Cool temperatures favor growth of Oregon isolates of Calonectria pseudonaviculata and increase severity of boxwood blight on two Buxus cultivars. Plant Disease. https://doi.org/10.1094/PDIS-04-22-0769-RE.

Irrigation frequency and volume has little influence on Phytophthora root rot in container-grown rhododendron Reprint Icon - (Peer Reviewed Journal)
Weiland, G.E., Scagel, C.F., Grunwald, N.J., Davis, E.A., Beck, B.R., Mitchell, J.N. 2022. Irrigation frequency and volume has little influence on Phytophthora root rot in container-grown rhododendron. Journal of Environmental Horticulture. 40(2):67-78. https://doi.org/10.24266/2573-5586-40.2.67.

First report of macrophomina phaseolina causing charcoal root rot of hebe ochracea and hebe pinguifolia in Oregon, U.S.A. Reprint Icon - (Peer Reviewed Journal)
Weiland, G.E. 2022. First report of macrophomina phaseolina causing charcoal root rot of hebe ochracea and hebe pinguifolia in Oregon, U.S.A.. Plant Disease. https://doi.org/10.1094/PDIS-09-21-2036-PDN.

Is disease induced by flooding representative of nursery conditions in rhododendrons infected with p. cinnamomi or p. plurivora? Reprint Icon - (Peer Reviewed Journal)
Mestas, A., Weiland, G.E., Scagel, C.F., Grunwald, N.J., Davis, E.A., Mitchell, J.N., Beck, B.R. 2022. Is disease induced by flooding representative of nursery conditions in rhododendrons infected with p. cinnamomi or p. plurivora?. Plant Disease. 106:157-1166. https://doi.org/10.1094/PDIS-06-21-1340-RE.

Irrigation and rootstocks to manage northern root-knot nematode during wine grape vineyard establishment Reprint Icon - (Peer Reviewed Journal)
East, K.E., Zasada, I.A., Schreiner, R.P., Moyer, M.M. 2021. Irrigation and rootstocks to manage northern root-knot nematode during wine grape vineyard establishment. Plant Health Progress. 23(1):49-56. https://doi.org/10.1094/PHP-06-21-0097-RS.

The challenges of managing phytophthora root rot in the nursery industry Reprint Icon - (Review Article)
Weiland, G.E. 2021. The challenges of managing phytophthora root rot in the nursery industry. Plant Health Progress. 22:332-341. https://doi.org/10.1094/PHP-02-21-0036-FI.

Optimizing inoculum production methods for infesting soil with phytophthora species Reprint Icon - (Peer Reviewed Journal)
Davis, E.A., Weiland, G.E., Scagel, C.F. 2021. Optimizing inoculum production methods for infesting soil with phytophthora species. Plant Disease. https://doi.org/10.1094/PDIS-12-20-2698-RE.

Genomic analyses of globodera pallida, a quarantine agricultural pathogen in Idaho Reprint Icon - (Peer Reviewed Journal)
Wasala, S.K., Howe, D.K., Dandurand, L.M., Zasada, I.A., Denver, D.R. 2021. Genomic analyses of globodera pallida, a quarantine agricultural pathogen in Idaho. Pathogens. 10(3):363. https://doi.org/10.3390/pathogens10030363.

Virulence of five phytophthora species causing rhododendron root rot in Oregon Reprint Icon - (Peer Reviewed Journal)
Sacher, G.O., Scagel, C.F., Davis, E.A., Beck, B.R., Weiland, G.E. 2021. Virulence of five phytophthora species causing rhododendron root rot in Oregon. Plant Disease. https://doi.org/10.1094/PDIS-09-20-1873-RE.

First report of the hop cyst nematode, heterodera humuli, in two counties of the Yakima Valley region, WA, USA Reprint Icon - (Peer Reviewed Journal)
Darling, E., Pu, J., Cole, E., Perrault, J., Christian, R., Hale, A., Warner, F., Zasada, I.A., Chung, H., Quintanilla, M. 2021. First report of the hop cyst nematode, heterodera humuli, in two counties of the Yakima Valley region, WA, USA. Plant Disease. 105(4):727-738. https://doi.org/10.1094/PDIS-08-20-1769-PDN.

Phytophthora species differ in response to phosphorous acid and mefenoxam for the management of phytophthora root rot in rhododendron Reprint Icon - (Peer Reviewed Journal)
Weiland, G.E., Scagel, C.F., Grunwald, N.J., Davis, E.A., Beck, B.R. 2020. Phytophthora species differ in response to phosphorous acid and mefenoxam for the management of phytophthora root rot in rhododendron. Plant Disease. 105:1505-1514. https://doi.org/10.1094/PDIS-09-20-1960-RE.

Growth, sporulation, and pathogenicity of the raspberry pathogen phytophthora rubi under different temperature and moisture regimes - (Peer Reviewed Journal)
Graham, K.A., Beck, B.R., Zasada, I.A., Scagel, C.F., Weiland, G.E. 2021. Growth, sporulation, and pathogenicity of the raspberry pathogen phytophthora rubi under different temperature and moisture regimes. Plant Disease. https://doi.org/10.1094/PDIS-09-20-1916-RE.

Field performance of wine grape rootstocks and fumigation during the establishment phase of a chardonnay vineyard in Washington Reprint Icon - (Peer Reviewed Journal)
East, K.E., Zasada, I.A., Tarara, J., Moyer, M.M. 2021. Field performance of wine grape rootstocks and fumigation during the establishment phase of a chardonnay vineyard in Washington. American Journal of Enology and Viticulture. 72:113-125. https://doi.org/10.5344/ajev.2020.20023.

New reduced-risk agricultural nematicides – Rationale and review Reprint Icon - (Peer Reviewed Journal)
Desaeger, J., Wram, C., Zasada, I.A. 2020. New reduced-risk agricultural nematicides – Rationale and review. Journal of Nematology. 52:1-16. https://doi.org/10.21307/jofnem-2020-091.

Differential response of Meloidogyne, Pratylenchus, Globodera, and Xiphenema species to the nematicide fluazaindolozine Reprint Icon - (Peer Reviewed Journal)
Wram, C.L., Zasada, I.A. 2020. Differential response of Meloidogyne, Pratylenchus, Globodera, and Xiphenema species to the nematicide fluazaindolozine. Phytopathology. 110(12):2003-2009. https://doi.org/10.1094/PHYTO-05-20-0189-R.

Confirmation of Calonectria pseudonaviculata causing boxwood blight of Buxus sempervirens and Buxus cultivars in Oregon Reprint Icon - (Peer Reviewed Journal)
Sacher, G.O., Weiland, G.E., Putnam, M.L., Crouch, J., Castroaguddin, V.L. 2020. Confirmation of Calonectria pseudonaviculata causing boxwood blight of Buxus sempervirens and Buxus cultivars in Oregon. Plant Disease. 104(6):1862. https://doi.org/10.1094/PDIS-01-20-0078-PDN.

Pathogenicity of four phytophthora species causing rhododendron root rot in Oregon - (Abstract Only)

Plastic mulches improved plant growth and suppressed weeds in late summer-planted floricane raspberrry Reprint Icon - (Peer Reviewed Journal)
Zhang, H., Ghimire, S., Benedict, C., Zasada, I.A., Liu, H., Devetter, L., Miles, C. 2020. Plastic mulches improved plant growth and suppressed weeds in late summer-planted floricane raspberrry. HortScience. 55(4):565-572. https://doi.org/10.21273/HORTSCI14734-19.

Annual and perennial alleyway cover crops vary in their effects on physical, chemical, and biological properties of soil quality in Pacific Northwest red raspberry Reprint Icon - (Peer Reviewed Journal)
Rudolph, R.E., Zasada, I.A., Hesse, C.N., Devetter, L.W. 2020. Annual and perennial alleyway cover crops vary in their effects on physical, chemical, and biological properties of soil quality in Pacific Northwest red raspberry. HortScience. 55(3):344-352. https://doi.org/10.21273/HORTSCI14511-19.

Soilborne Phytophthora and Pythium diversity from rhododendron in propagation, container, and field production systems of the Pacific Northwest Reprint Icon - (Peer Reviewed Journal)
Weiland, G.E., Scagel, C.F., Grunwald, N.J., Davis, E.A., Beck, B.R., Foster, Z.S., Fieland, V.J. 2020. Soilborne Phytophthora and Pythium diversity from rhododendron in propagation, container, and field production systems of the Pacific Northwest. Plant Disease. 104(6):1841-1850. https://doi.org/10.1094/PDIS-08-19-1672-RE.

Scouting for boxwood blight: Insights from the 2019 survey - (Trade Journal)
Weiland, G.E., Pscheidt, J.W. 2020. Scouting for boxwood blight: Insights from the 2019 survey. Digger. March 2020:25-28. Available: http://www.diggermagazine.com/wp-content/uploads/2020/02/Digger_202003.pdf

Directed energy system technology for the control of soil borne fungal pathogens and plant-parasitic nematodes Reprint Icon - (Peer Reviewed Journal)
Riga, E., Crisp, J.D., McComb, G.J., Zasada, I.A., Weiland, G.E. 2020. Directed energy system technology for the control of soil borne fungal pathogens and plant-parasitic nematodes. Pest Management Science. 76(6):2072-2078. https://doi.org/10.1002/ps.5745.

Boxwood (Buxus spp.)-Box Blight - (Other)
Pscheidt, J.W., Weiland, G.E. 2020. Boxwood (Buxus spp.)-Box Blight. Pacific North West Plant Disease Management Handbook. p. 4B-56 to 4B-58.

The draft genomes of Radopholus similis populations from Costa Rica Reprint Icon - (Peer Reviewed Journal)
Wram, C.L., Hesse, C.N., Wasala, S.K., Howe, D.K., Peetz, A.B., Denver, D.R., Humprheys Pereira, D., Zasada, I.A. 2019. The draft genomes of Radopholus similis populations from Costa Rica. Journal of Nematology. 51:1-4. https://doi.org/10.21307/jofnem-2019-052.

How low can they go? Plant-parasitic nematodes in a Washington vineyard Reprint Icon - (Peer Reviewed Journal)
East, K.E., Moyer, M.M., Madden, N.M., Zasada, I.A. 2019. How low can they go? Plant-parasitic nematodes in a Washington vineyard. Catalyst: Discovery into Practice. 3(1):31-36. https://doi.org/10.5344/catalyst.2019.19001.

Effect of the trap crop, Solanum sisymbriifolium, on Globodera pallida, Globodera tabacum, and Globodera ellingtonae Reprint Icon - (Peer Reviewed Journal)
Dandurand, L.M., Zasada, I.A., Lamondia, J.A. 2019. Effect of the trap crop, Solanum sisymbriifolium, on Globodera pallida, Globodera tabacum, and Globodera ellingtonae. Journal of Nematology. 51:1-11. https://doi.org/10.21307/jofnem-2019-030.

Difference in toxicity and physiological response of Meloidogyne incognita to sub-lethal doses of post-plant nematicides Reprint Icon - (Peer Reviewed Journal)
Wram, C.L., Zasada, I.A. 2019. Difference in toxicity and physiological response of Meloidogyne incognita to sub-lethal doses of post-plant nematicides. Phytopathology. 109(9):1605-1613. https://doi.org/10.1094/PHYTO-11-18-0420-R.

Variable abundance and distribution of Wolbachia and Cardinium Endosymbionts in plant-parasitic nematode field populations Reprint Icon - (Peer Reviewed Journal)
Wasala, S.K., Brown, A.M., Kang, J., Howe, D.K., Peetz, A.B., Zasada, I.A., Denver, D.R. 2019. Variable abundance and distribution of Wolbachia and Cardinium Endosymbionts in plant-parasitic nematode field populations. Frontiers in Microbiology. 10:964. https://doi.org/10.3389/fmicb.2019.00964.

Further elucidation of the host range of Globodera ellingtonae - (Peer Reviewed Journal)
Peetz, A.B., Baker, H., Zasada, I.A. 2019. Further elucidation of the host range of Globodera ellingtonae. Nematropica. 49(1):12-17.

Polyethylene and biodegradable plastic mulches improve growth, yield, and weed management in floricane red raspberry Reprint Icon - (Peer Reviewed Journal)
Zhang, H., Miles, C., Ghimire, S., Benedict, C., Zasada, I.A., Devetter, L.W. 2019. Polyethylene and biodegradable plastic mulches improve growth, yield, and weed management in floricane red raspberry. Scientia Horticulturae. 250:371-379. https://doi.org/10.1016/j.scienta.2019.02.067.

Current status of potato cyst nematodes in the United States and Canada Reprint Icon - (Peer Reviewed Journal)
Dandurand, L.M., Zasada, I.A., Wang, X., Mimee, B., Dejong, W., Novy, R.G., Whitworth, J.L., Kuhl, J. 2019. Current status of potato cyst nematodes in the United States and Canada. Annual Review of Phytopathology. 57:117-133. https://doi.org/10.1146/annurev-phyto-082718-100254.

Trends in occurrence, distribution, and population densities of plant-parasitic nematodes in the Pacific Northwest of the United States from 2012 to 2016 Reprint Icon - (Peer Reviewed Journal)
Zasada, I.A., Kitner, M.L., Wram, C., Wade, N., Ingham, R.E., Hafez, S., Mojtahedi, H., Chavoshi, S., Hammack, N. 2019. Trends in occurrence, distribution, and population densities of plant-parasitic nematodes in the Pacific Northwest of the United States from 2012 to 2016. Plant Health Progress. 20(1):20-28. https://doi.org/10.1094/PHP-11-18-0077-RS.

Rhododendron-Phytophthora root rot - (Other)
Pscheidt, J.W., Ocamb, C., Weiland, G.E., Scagel, C.F., Sacher, G., Mestas, A. 2019. Rhododendron-Phytophthora root rot. Pages 4R-28 to 4R-30 in Pacific Northwest Plant Disease Control Handbook. Oregon State University, Corvallis, OR. https://pnwhandbooks.org/node/3437.

Developmental dynamics of Meloidogyne hapla in Washington wine grapes Reprint Icon - (Peer Reviewed Journal)
East, K.E., Zasada, I.A., Schreiner, R.P., Moyer, M.M. 2019. Developmental dynamics of Meloidogyne hapla in Washington wine grapes. Plant Disease. 103(5):966-971. https://doi.org/10.1094/PDIS-07-18-1195-RE.

Analysis of nematode-endosymbiont coevolution in the Xiphinema americanum species complex using molecular markers of variable evolutionary rates Reprint Icon - (Peer Reviewed Journal)
Howe, D.K., Smith, M., Tom, D.M., Brown, A.M., Peetz, A.B., Zasada, I.A., Denver, D.R. 2018. Analysis of nematode-endosymbiont coevolution in the Xiphinema americanum species complex using molecular markers of variable evolutionary rates. Nematology. 21(5):533-546. https://doi.org/10.1163/15685411-00003233.

Comparative genomics of Wolbachia-Cardinium dual endosymbiosis in a plant-parasitic nematode Reprint Icon - (Peer Reviewed Journal)
Brown, A.M., Wasala, S.K., Howe, D.K., Peetz, A.B., Zasada, I.A., Denver, D.R. 2018. Comparative genomics of Wolbachia-Cardinium dual endosymbiosis in a plant-parasitic nematode. Frontiers in Microbiology. 9:2482. https://doi.org/10.3389/fmicb.2018.02482.

Brassicaceous seed meal, root removal, and chemical fumigation vary in their effects on soil quality parameters and Pratylenchus penetrans in a replanted floricane raspberry production system Reprint Icon - (Peer Reviewed Journal)
Rudolph, R.E., Zasada, I.A., Hesse, C.N., Devetter, L.W. 2018. Brassicaceous seed meal, root removal, and chemical fumigation vary in their effects on soil quality parameters and Pratylenchus penetrans in a replanted floricane raspberry production system. Applied Soil Ecology. 113:44-51. https://doi.org/10.1016/j.apsoil.2018.08.024.

Disease control of Phytophthora plurivora and other Phytophthora species infecting European beech and rhododendron in the United States - (Abstract Only)
Weiland, G.E., Grunwald, N.J., Scagel, C.F. 2018. Disease control of Phytophthora plurivora and other Phytophthora species infecting European beech and rhododendron in the United States. Meeting Abstract for LIFE+ ELMIAS Ash and Elm, and IUFRO WP 7.02.01 Root and Stem Rots Conference (LIFE-IUFRO); 2018. Aug 26-Sept 1; Uppsala and Visby, Sweden.

Presence and distribution of heavy metal tolerant fungi in surface soils of a temperate pine forest Reprint Icon - (Peer Reviewed Journal)
Torrez-Cruz, T.J., Hesse, C.N., Kuske, C.R., Porras-Alfaro, A. 2018. Presence and distribution of heavy metal tolerant fungi in surface soils of a temperate pine forest. Applied Soil Ecology. 131:66-74. https://doi.org/10.1016/j.apsoil.2018.08.001.

Vitis spp. rootstocks are poor hosts for Meloidogyne hapla, a nematode commonly found in Washington winegrape vineyards Reprint Icon - (Peer Reviewed Journal)
Zasada, I.A., Howland, A.D., Peetz, A.B., East, K., Moyer, M.M. 2019. Vitis spp. rootstocks are poor hosts for Meloidogyne hapla, a nematode commonly found in Washington winegrape vineyards. American Journal of Enology and Viticulture. 70(1):1-8. https://doi.org/10.5344/ajev.2018.18027.

Plant-parasitic nematodes of Idaho, Oregon, and Washington (Pacific Northwest) - (Book / Chapter)
Zasada, I.A., Dandurand, L., Gleason, C., Hagerty, C., Ingham, R. 2018. Plant-parasitic nematodes of Idaho, Oregon, and Washington (Pacific Northwest). In: Subbotin, S.A., Chitambar, J.J., editors. Plant Parasitic Nematodes in Sustainable Agriculture of North America, Vol. 1 – Canada, Mexico and Western USA. Cham, Switzerland: Springer. p. 211-240.

Effectiveness of nontarped broadcast fumigation and root removal on root lesion nematode and Fusarium and Pythium species in a red raspberry system Reprint Icon - (Peer Reviewed Journal)
Devetter, L., Watkinson, S., Zasada, I.A., Weiland, G.E., Hesse, C.N., Walters, T.W. 2018. Effectiveness of nontarped broadcast fumigation and root removal on root lesion nematode and Fusarium and Pythium species in a red raspberry system. Plant Health Progress. 19(2):168-175. https://doi.org/10.1094/PHP-01-18-0006-RS.

Genome-based evolutionary history of Pseudomonas spp Reprint Icon - (Peer Reviewed Journal)
Hesse, C.N., Schulz, F., Bull, C.T., Shaffer, B.T., Yan, Q., Shapiro, N., Hassan, K.A., Varghese, N., Elbourne, L.D., Paulsen, I.T., Kyrpides, N., Woyke, T., Loper, J.E. 2018. Genome-based evolutionary history of Pseudomonas spp. Environmental Microbiology. 20(6):2142–2159. https://doi.org/10.1111/1462-2920.14130.

Contribution of a winter wheat cover crop to the maintenance of root lesion nematode populations in the red raspberry production system Reprint Icon - (Peer Reviewed Journal)
Rudolph, R.E., Walters, T.W., Devetter, L.W., Zasada, I.A. 2018. Contribution of a winter wheat cover crop to the maintenance of root lesion nematode populations in the red raspberry production system. HortTechnology. 28(2):182-188. https://doi.org/10.21273/HORTTECH03971-18.

A rapid, sensitive and field-deployable isothermal assay for the detection of Verticillium alfalfae Reprint Icon - (Peer Reviewed Journal)
Reyes Gaige, A., Dung, J.K., Weiland, G.E. 2018. A rapid, sensitive and field-deployable isothermal assay for the detection of Verticillium alfalfae. Canadian Journal of Plant Pathology. https://doi.org/10.1080/07060661.2018.1474262.

Heroes and villains: Research identifies harmful and beneficial microbes in nursery soil - (Trade Journal)
Weiland, G.E., Scagel, C.F., Grunwald, N.J., Foster, Z., Fieland, V., Santamaria, L. 2018. Heroes and villains: Research identifies harmful and beneficial microbes in nursery soil. Digger. March:25-29.

Late summer disease symptoms in western Washington red raspberry fields associated with co-occurrence of Phytophthora rubi, Verticillium dahliae, and Pratylenchus penetrans, but not Raspberry bushy dwarf virus Reprint Icon - (Peer Reviewed Journal)
Weiland, G.E., Benedict, C., Zasada, I.A., Scagel, C.F., Beck, B.R., Davis, E.A., Graham, K., Peetz, A.B., Martin, R.R., Dung, J.K., Reyes Gaige, A., Thiessen, L.S. 2017. Late summer disease symptoms in western Washington red raspberry fields associated with co-occurrence of Phytophthora rubi, Verticillium dahliae, and Pratylenchus penetrans, but not Raspberry bushy dwarf virus. Plant Disease. 102(5):938-947. https://doi.org/10.1094/PDIS-08-17-1293-RE.