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Creator:: Smiley, Richard W., Machado, Stephen, Rhinhart, Karl E. L., Reardon, Catherine L., and Wuest, Stewart B.
Abstract:: This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by The American Phytopathological Society and can be found at: https://doi.org/10.1094/PDIS-09-15-1020-RE
Resource Type:: Article
Full Text:: University, Columbia Basin Agricultural Research Center, P.O. Box 370, Pendleton, OR 97801; and Catherine L

Creator:: Yan, Guiping, Smiley, Richard W., Okubara, Patricia A., Skantar, Andrea M., and Reardon, Catherine L.
Abstract:: Pratylenchus neglectus is one of the most widespread and economically important nematodes that invades plant roots and restricts wheat productivity in the Pacific Northwest. It is challenging to quantify P neglectus using microscopic methods for studies that require large-scale sampling, such as assessment of rotation crops, wheat cultivars, and other...
Resource Type:: Article
Full Text:: , Nematology Laboratory, Beltsville, MD 20705; and Catherine L. Reardon, USDA-ARS, Columbia Plateau

Creator:: Weiland, Jerry E.
Abstract:: Disease control of soilborne pathogens by biological control agents (BCAs) is often inconsistent under field conditions. This inconsistency may be partly influenced by pathogen diversity if there is a differential response among pathogen species and isolates to selected BCAs. The responses of 148 Pythium isolates obtained from soil at three...
Resource Type:: Article
Full Text:: . 17. Hildebrand, D. M., Stone, J. K., James, R. L., and Frankel, S. J. 2004. Alter- natives to

Creator:: Smiley, Richard W. and Marshall, Juliet M.
Abstract:: The cereal cyst nematode Heterodera avenae reduces wheat yield in the Pacific Northwest. Resistance and tolerance traits among spring wheat cultivars were poorly defined. Screening trials were conducted with 39 cultivars over a 2-yr period in irrigated commercial fields that were infested by H. avenae. Comparisons were made between drill...
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Full Text:: E • p os te d 03 /2 8/ 20 16 T hi s pa pe r ha s be en p ee r re vi ew ed

Creator:: Molnar, Thomas J., Walsh, Emily, Capik, John M., Sathuvalli, Vidyasagar, Mehlenbacher, Shawn A., Rossman, Amy Y., and Zhang, Ning
Abstract:: Eastern filbert blight (EFB) is a devastating disease of European hazelnut, Corylus avellana, which causes economic losses in Oregon, where 99% of the U.S. crop is produced. The causal fungus, Anisogramma anomala, is native to eastern North America, where it is found associated with the American hazelnut (C. americana). Although...
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Full Text:: , H., Castlebury, L. A., Green, S., and Stone, J. K. 2009. Characteri- sation and phylogenetic

Creator:: Smiley, Richard W. and Yan, Guiping
Abstract:: The cereal cyst nematode Heterodera avenae suppresses wheat production in the western United States. A second species of cereal cyst nematode, H. filipjevi, was identified in eastern Oregon during 2008. This paper reports the discovery of H. filipjevi–infested fields in eastern Washington, thereby extending the known distribution of H. filipjevi...
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Full Text:: , H. filipjevi (Madzhidov, 1981) Stone, 1985, and H. latipons Franklin, 1969 are the most

Creator:: Weiland, Jerry E., Beck, Bryan R., and Davis, Anne
Abstract:: Pythium species are common soilborne oomycetes that occur in forest nursery soils throughout the United States. Numerous species have been described from nursery soils. However, with the exception of P. aphanidermatum, P irregulare, P. sylvaticum, and P ultimum, little is known about the potential for other Pythium species found in...
Resource Type:: Article
Full Text:: conifer nurseries. Phyto- pathology 80:698-704. 3. Hildebrand, D. M., Stone, J. K., James, R. L., and

Creator:: Yan, Guiping, Smiley, Richard W., Okubara, Patricia A., and Skantar, Andrea M.
Abstract:: Heterodera avenae and H. filipjevi are economically important cyst nematodes that restrict production of cereal crops in the Pacific Northwest United States and elsewhere in the world. Identification of these two species is critical for recommending and implementing effective management practices. Primers were designed from the internal transcribed spacer (ITS)...
Resource Type:: Article
Full Text:: . avenae Wollenweber, 1924; H. filipjevi (Madzhidov, 1981) Stone, 1985; and H. latipons Franklin, 1969

Creator:: Weiland, Jerry E., Santamaria, Luisa, and Grünwald, Niklaus J.
Abstract:: Mefenoxam and fosetyl-Al are common fungicides used to supplement disease control of Pythium damping-off and root rot in forest nurseries of the western United States. However, it is unknown whether fungicide-resistant Pythium isolates are present or whether new fungicide and biological treatments might also provide supplemental disease control. Isolates of...
Resource Type:: Article
Full Text:: performance. New For. 30:185-202. 7. Enebak, S. A., Palmer, M. A., and Blanchette, R. A. 1990. Managing soil

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