Claudia Nischwitz

Publications | Abstracts

• Stock, M., Oliver, E., Wagner, K.M, Nischwitz, C., (2022). Improving Dahlia Production in Northern Utah through Nutrient and Temperature Management.. American Society for Horticultural Science
• Nischwitz, C., Schmitt, M., Skantar, A., Bunderson, T., McClure, M.A, (2011). Root-knot nematode species in golf course greens in the Western U.S.A.. Phytopathology
• Nischwitz, C., Olsen, M., (2011). Susceptibility of mesquite species to powdery mildew in Arizona. Phytopathology
• Nischwitz, C., Dhiman, C., Survey of Erwinia amylovora, causal agent of fire blight, from apple and. Phytopathology

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

Publications | Books

• Murray, M., Nischwitz, C., (2022). Abiotic Disorders of Tomato. Utah State University *

Publications | Book Chapters

• Nischwitz, C., Compton, T., Chowdhury, I.A, Koirala, S., MacLellan, M.P, Wade, E., Dutta, B., Diseases of Alliums: Handbook of Plant Disease Management. Handbook of Vegetable and Herb Diseases. Springer
• Steinitz, T., Wagner, K.M, Drost, D.T, Alston, D.G, Hunter, B., Nischwitz, C., Ramirez, R., Allen, L., Barnhill, J.V, Frame, D., Pace, M., Durward, C., Reeve, J., Jewkes, M., Heflebower, R.F, (2014). A Guide to Common Organic Gardening Questions. USU Extension *
• Beddes, T., Drost, D.T, Alston, D.G, Nischwitz, C., Bunn, B., (2014). Sweet Corn Production: Utah Vegetable Production and Pest Management Guide. Utah State University

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

Publications | Fact Sheets

• Webb, K., Stock, M., Pratt, A., Nischwitz, C., Volesky, N., (2026). Basket Flower cut flower production in Utah. USU Extension
• Webb, K., Stock, M., Scow, B., Reid, C., Xiong, Y.V, Nischwitz, C., Volesky, N., (2026). Gomphrena cut flower production in Utah. USU Extension
• Stock, M., Scow, B., Reid, C., Xiong, Y.V, Harrison, A., Harrison, L., Nischwitz, C., Volesky, N., (2026). Strawflower cut flower production in Utah. USU Extension
• Webb, K., Stock, M., Scow, B., Reid, C., Xiong, Y.V, Nischwitz, C., Volesky, N., (2025). Miniature Carnation Cut Flower Production in Utah. USU Extension
• Webb, K., Stock, M., Scow, B., Reid, C., Xiong, Y.V, Harrison, A., Harrison, L., Pratt, A., Nischwitz, C., Volesky, N., (2025). Statice cut flower production in Utah. USU Extension
• Harrison, A., Stock, M., Harrison, L., Pratt, A., Nischwitz, C., Volesky, N., (2024). Bells of Ireland cut flower production in Utah. USU Extension
• Harrison, A., Stock, M., Harrison, L., Pratt, A., Stewart, O., Nischwitz, C., Volesky, N., (2024). Cosmos cut flower production in Utah. USU Extension
• Stock, M., Harrison, A., Harrison, L., Pratt, A., Nischwitz, C., Volesky, N., (2024). Dusty miller cut foliage production in Utah. USU Extension
• Harrison, A., Stock, M., Harrison, L., Pratt, A., Nischwitz, C., Volesky, N., (2024). Echinacea cut flower production in Utah. USU Extension
• Nischwitz, C., Noorlander, M., Hubbell, M., Wille, C., (2024). Virus del marchitamiento manchado del tomate en tomates y pimientos. USU Cooperative Extension *
• Stock, M., Pratt, A., Nischwitz, C., Oliver, E., Wagner, K.M, Volesky, N., (2023). Dahlia Cut Flower Production in Utah. USU Extension
• Clawson, J., Nischwitz, C., (2023). Dwarf Bunt in Winter Wheat.
• Gleeson, S., Stock, M., Nischwitz, C., (2022). Dahlia mosaic virus on dahlia. USU Extension
• Caron, M., Davis, R., Hansen, S., Beddes, T., , Alston, D.G, Nischwitz, C., (2018). Redberry Mite on Blackberry. Utah State University Fact Sheet *
• Nischwitz, C., Holmgren, L.N, (2016). Barley yellow dwarf virus. Utah State University Extension *
• Nischwitz, C., Olsen, S.H, Patterson, R., (2015). Zebra chip disease of potato. USU Extension *
• Nischwitz, C., (2015). Candidatus Liberibacter of pepper . *
• Nischwitz, C., Kopp, K., Gunnell, J., (2013). Necrotic Ring Spot and Summer Patch of Turfgrass.
• Nischwitz, C., Dhiman, C., Drost, D.T, (2013). Botrytis Neck Rot of Onion. USU Cooperative Extension
• Nischwitz, C., Dhiman, C., (2012). Pink root disease of onion. USU Extension *
• Baker, F.A, Alston, D.G, Nischwitz, C., (2012). Important Pests of Ornamental Aspen. Utah State University Cooperative Extension *
• Nischwitz, C., Black, B.L, Pace, M., (2011). Peach leaf curl disease. USU Extension *
• Nischwitz, C., Murray, M., (2011). Thousand Cankers Disease of Walnut (Geosmithia morbida). USU Extension
• Nischwitz, C., (2011). Fuego bacteriano del manzano y el peral (Erwinia amylovora). USU extension *
• Nischwitz, C., Dhiman, C., Streptomycin resistance of Erwinia amylovora, causal. USU Extension *

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

Publications | Journal Articles

Academic Journal

• Shin, G., Asselin, J., Smith, A., Aegerter, B., Coutinho, ., Zhao, M., Dutta, B., Mazzone, J., Neupane, R., Gugino, B., Hoepting, C., Khanal, M., Malla, S., Nischwitz, C., Sidhu, J., Machado Burke, A., Davey, J., Uchanski, M., Derie, M.L, du Toit, L.J, Stresow, S., Bonasera, J.M, Stodghill, P., Kvitko, B., (2025). Plasmids encode and can mobilize onion pathogenicity in Pantoea agglomerans. The ISME journal, 19, doi: https://doi.org/10.1093/ismejo/wraf019
• Stock, M., Oliver, F., Nischwitz, C., (2024). Nitrogen Management and Virus Incidence on Cut Flower Production of Dahlia . Journal of Environmental Horticulture, 42, 14-22. doi: https://doi.org/10.24266/0738-2898-42.1.14
• Frantz, R., Compton, T., Nischwitz, C., Gordillo, L.F, (2023). Modeling the Spread of Curly Top Disease in Tomato Crops. Letters in Biomathematics
• Frantz, R., Nischwitz, C., Compton, T., Gordillo, L.G, (2023). Modeling the Spread of Curly Top Disease in Tomato Crops. Letters in Biomathematics
• Zahniser, J., Henry, T., Schumm, Z., Spears, L., Nischwitz, C., Scow, B., Volesky, N., (2022). Centrocoris volxemi (Puton) (Hemiptera: Heteroptera: Coreidae), first records for North America and second species of the genus established in the United States. Proceedings of the Entomological Society of Washington
• Buckland, K., Alston, D.G, Reeve, J., Nischwitz, C., Drost, D.T, (2017). Trap Crops in Onion to Reduce Onion Thrips and Iris Yellow Spot Virus. Southwestern Entomologist, 42:1, 73-90. doi: http://dx.doi.org/10.3958/059.042.0108
• Scott, J., Nischwitz, C., Ramirez, R., Gordillo, L.G, (2017). Managing the spread of alfalfa stem nematode:the relationship between crop rotation periods and pest re-emergence. Natural Resource Modeling
• Kawasaki, Y., Nischwitz, C., Grilley, M.M, Jones, J., Takemoto, J.Y, (2016). Production and application of syringomycin E as an organic fungicide seed protectant against pythium damping-off. Journal of Phytopathology, 164:10, 801–810.
• Nischwitz, C., Skantar, A., Handoo, Z.A, Hult, M.N, Schmitt, M.E, McClure, M.A, (2013). Occurrence of <i>Meloidogyne fallax</i> in North America, and Molecular Characterization of <i>M. fallax</i> and <i>M. minor</i> from U.S. Golf Course Greens. Plant Disease, 97:11, 1424-1430. doi: 10.1094/pdis-03-13-0263-re
• Nischwitz, C., (2013). Redescription of Robustodorus megadorus with Molecular. Journal of nematology, 45, 237-252.
• Nischwitz, C., Dhiman, C., (2013). Streptomycin resistance of Erwinia amylovora isolated from apple (Malus domesticus) in Utah . Plant Health Progress, 14:1, doi: 10.1094/php-2013-1025-01-rs
• Nischwitz, C., Srinivasan, B., Sundaraj, S., Mullis, S., McInnes, B., Gitaitis, R., (2012). Geographical Distribution and Survival of Iris yellow spot virus in Spiny Sowthistle, Sonchus asper, in Georgia. Plant Disease, 96:8, 1165-1171.
• McClure, M.A, Nischwitz, C., Skantar, A., Subbotin, S.A, Schmitt, M.E, (2012). Root-knot Nematodes in Golf Course Greens of the Western United States. Plant Disease, 96, 635-647. doi: 10.1094/pdis-09-11-0808
• Gitaitis, R., Mullis, S., Lewis, K., Langston, D., Watson, A., Sanders, H., Torrance, R., Jones, J., Nischwitz, C., (2012). First Report Of A New Disease Of Onion In Georgia Caused. Plant Disease, 96, 285.
• Seyran, M., Nischwitz, C., Lewis, K.J, Gitaitis, R.D, Brenneman, T.B, Stevenson, K.L, (2009). Phylogeny of the pecan scab fungus Fusicladium effusum G. Winter based on the cytochrome b gene sequence. Mycological Progress
• Nischwitz, C., Srinivasan, R., Sundaraj, S., Mullis, S., McInnes, B., Gitaitis, R., Geographical distribution and survival of Iris yellow spot virus in spiny sowthistle, Sonchus asper (L.) Hill in Georgia, USA . Plant Disease

Public or Trade Journal

• Nischwitz, C., Onion insect quiz. Onion World *

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

Publications | MultiMedia

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.

Publications | Other

Bulletins

• Johnson, M.S, Nischwitz, C., (2014). Damping-off.
• Alston, D.G, Murray, M., Nischwitz, C., (2012). Utah Home Orchard Pest Management Guide. USU Cooperative Extension *
• Davis, R., Kuhns, M.R, Nischwitz, C., (2011). Spruce Health in Utah Landscapes. USU Extension

Magazine/Trade Publications

• Nischwitz, C., (2025). Onion Quiz. Onion World *

Newsletter

• Nischwitz, C., (2024). Bacterial Bulb Rots in Utah. Plant Health News *
• Nischwitz, C., (2024). Goji Berry Gall Mite. Plant Health News *
• Murray, M., Nischwitz, C., Kast, M., (2024). Hemp Seed Testing Reveals the Good and the Bad. Plant Health News *
• Nischwitz, C., (2024). Edema (or Oedema). Plant Health News *
• Nischwitz, C., (2024). Ethylene Damage on Transplants in Greenhouses. Plant Health News *
• Nischwitz, C., Stock, M., (2022). New diseases detected on Utah cut flowers. Utah Pests Quarterly Newsletter, Utah Plant Pest Diagnostic Laboratory & USU Extension *
• Compton, T., Nischwitz, C., Stock, M., (2020). Dahlia mosaic virus (DMV) on dahlia in Utah. Utah Pests News *
• Nischwitz, C., (2017). Ergot in grasses and small grains. Utah Plant Pest Diagnostic lab *
• Nischwitz, C., (2016). High Plains virus and wheat streak mosaic virus in small grainstha . Utah Plant Pest Diagnostic lab *
• Nischwitz, C., (2016). Leaf mold of tomato common in spring 2016. Utah Plant Pest Diagnostic lab *
• Nischwitz, C., (2016). Discarded store-bought produce could be path of new plant disease introductions. *
• Nischwitz, C., (2014). Bacterial spot of pepper. USU Extension *
• Alston, D.G, Nischwitz, C., Petrizzo, E., (2012). Insect vectors of vegetable virus diseases. Utah State University Extension *

Other

An asterisk (*) at the end of a publication indicates that it has not been peer-reviewed.