Russell Ingham

Russell Ingham
Oregon State University | OSU

About

46
Publications
5,974
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628
Citations
Citations since 2017
5 Research Items
201 Citations
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2017201820192020202120222023010203040
2017201820192020202120222023010203040

Publications

Publications (46)
Article
Full-text available
Punctodera mulveyi n. sp. is described and illustrated from turf grass (Poa annua) in golf course greens with other fescues in Bandon, Coos County, Oregon, USA. Females and cysts are characterised by a saccate, globose to ovoid or pear-shaped body with a protruding neck. The cuticle has a lace-like pattern of ridges and heavy punctations on the sub...
Conference Paper
Full-text available
In the spring of 2019, a soil sample collected from a golf course from Southern Oregon (Brandon, OR), was received by the USDA-ARS, Mycology and Nematology Genetic Diversity and Biology Laboratory (MNGDBL), Beltsville, Maryland for species identification. A large number of cysts and juveniles (J2) were separated from soil by sieving and Baermann fu...
Article
The Pacific Northwest (PNW) of the United States (Idaho, Oregon, and Washington) is a diverse agricultural production area with over 400 different commodities grown in the region. Plant-parasitic nematodes are a constraint to the production of many of these commodities. Soil sample data from 2012 to 2016 were obtained from nematode diagnostic labor...
Article
Meloidogyne chitwoodi (Columbia root-knot nematode, CRKN) can cause serious damage in potato production systems, decreasing tuber value in the fresh market and processing industries. Genetic resistance to CRKN was first identified from the wild diploid potato species Solanum bulbocastanum accession SB22 and was successfully introgressed into tetrap...
Chapter
Agriculture in the Pacific Northwest (PNW) of the United States is diverse. The states within this region, Washington, Idaho and Oregon, are ranked as the 11th, 20th and 21st respectively, in the U.S. for crop value, including nursery and ornamentals in 2012 (USDA NASS 2014). Combined, over 17 million ha of land were farmed within this region of th...
Article
Full-text available
Globodera ellingtonae was detected in Oregon in 2008. In order to make decisions regarding the regulation of this nematode, knowledge of its biology is required. We determined the host status of a diversity of potato (Solanum tuberosum) varieties in soil-based experiments and identified hatching stimulants in in vitro hatching assays. 'Russet Burba...
Article
Full-text available
Corky ringspot disease (CRS) of potato (Solanum tuberosum) is caused by the tobacco rattle virus (TRV), which is vectored by stubby-root nematodes, Paratrichodorus spp. and Trichodorus spp., and is a significant threat to potato quality and production in many areas of the western United States. Between 2002 and 2005, fields with a history of CRS we...
Article
Full-text available
Organic growers are required to maintain or improve soil chemical, biological, and physical properties and thus need to integrate biological processes into fertility management. However, few guidelines exist for satisfying tree nutrient demands ecologically. Sound nitrogen (N) management is a key component for overall orchard productivity whereas p...
Article
Full-text available
Corky ringspot disease (CRS) of potato produces necrotic areas in tubers that are considered quality defects that can lead to crop rejection. CRS is caused by tobacco rattle virus that is vectored by stubby-root nematodes (Paratrichodorus spp., Trichodorus spp.) at very low population densities, making disease management difficult and expensive. Fu...
Article
Full-text available
Metam sodium (MS) is often applied to potato fields via sprinkler irrigation systems (water-run, WR) to reduce propagules of soil-borne pathogenic fungi, particularly Verticillium dahliae, to prevent yield loss from potato early dying disease. However, this procedure has not been effective for controlling quality defects in tubers caused by Columbi...
Article
Full-text available
Heterodera avenae is widely distributed in the western United States, where most wheat is grown in non-irrigated winter wheat/summer fallow rotations in low rainfall regions. Economic and social pressures have motivated growers to pursue a transition from winter wheat/summer fallow rotation to no-till annual spring cereals. Annual cereals are also...
Article
Full-text available
The root-lesion nematode, Pratylenchus penetrans (de Man, 1880) Filipjev, 1936, is a common pathogen of potato in the United States east of the Rocky Mountains and frequently interacts with Verticillium dahliae to aggravate early dying disease (4). West of the Rocky Mountains, P. penetrans is associated with numerous crops including mint, tree, and...
Article
Full-text available
During three years of trials in commercial production fields, populations of three genera of potato pathogens, Fusarium spp, Pythium spp, and Verticillium dahliae, were followed before and after the single or combination use of 1,3-dichloropropene (1,3-D), 1,3-D + 17% chloropicrin (1,3-D + chloropicrin), or metam sodium (MS). Populations of these f...
Article
Full-text available
Corky ringspot disease (CRS) of potato, caused by tobacco rattle virus that is vectored by stubby-root nematodes (Paratrichodorus spp.), is often controlled by aldicarb. When use of aldicarb on potato was suspended in 1989, an increase in crops rejected due to CRS in the Columbia Basin of the U.S. Pacific Northwest occurred. During 1992-94, several...
Article
Full-text available
During 1993-94, several fumigant and nonfumigant nematicides were tested alone and in combination at various rates for control of Columbia root-knot nematode (Meloidogyne chitwoodi) in potato. Ethoprop, oxamyl, or metam sodium alone did not adequately reduce tuber infection. Metam sodium plus ethoprop reduced culled tubers to 3%, and metam sodium p...
Article
Full-text available
Production of storage and dehydration (dehy) onions is increasing rapidly in the northcentral Oregon region of the Columbia Basin. Roughly circular patches of stunted onions have been observed in many fields and are often numerous and (or) extensive in area. Onions in these patches often exhibit symptoms typical of stubby-root nematodes, and Paratr...
Article
Bryophytes provide microhabitats for aquatic invertebrates, many of which are capable of anhydrobiosis. Densities of nematodes, tardigrades, rotifers, and other invertebrates recovered from Eurhynchium oreganum (Sull.) Jaeg, were determined for over one year at an Oregon Coast Range site. Extraction efficiency of Baermann funnels was evaluated by c...
Article
Full-text available
Popcorn cultivars were evaluated in field and greenhouse tests for resistance to the Columbia root-knot nematode, Meloidogyne chitwoodi, as potential resistant crops in potato rotations. A nematode reproductive factor (Rf) was calculated for each cultivar. Reproductive factor values also were compared on a relative basis as percentages of the Rf on...
Article
Declared out of print March 2010. Information contained within documents may be obsolete. Please check for recent information at the OSU Extension Service website: http://extension.oregonstate.edu/catalog Rapeseed is grown for its oil and meal, and as a cover crop. Rapid fall growth captures part of the available soil nitrogen, which otherwise migh...
Article
Declared out of print March 2010.Information contained within documents may be obsolete. Please check for recent information at the OSU Extension Service website: http://extension.oregonstate.edu/catalog Sudangrass and sorghum sudangrass crosses are used as warm season cover crops, forage, and silage. When used as a cover crop, their fibrous roots...
Article
Full-text available
Endoparasitic nematode populations are usually measured separately for soil and roots without a determination of the quantitative relation between soil and root population components. In this study, Pratylenchus penetrans populations in peppermint soil, roots, and rhizomes were expressed as the density within a standardized core consisting of 500 g...
Article
Full-text available
Seasonal vertical migration of Meloidogyne chitwoodi through soil and its impact on potato production in Washington and Oregon was studied. Nematode eggs and second-stage juveniles (J2) were placed at various depths (0-180 cm) in tubes filled with soil and buried vertically or in holes dug in potato fields. Tubes were removed at intervals over a 12...
Article
Tylenchorhynchus claytoni has less effect on primary production-related processes than might be assumed from estimates of annual consumption by root-feeding nematodes in grasslands, but the total impact on system productivity will be a function of the density of all plant-parasitic nematodes, their host-parasitic relationships and other environment...
Article
The impact of nematode consumption on aboveground net primary production (ANPP) was addressed by treating two areas of mixed-grass prairie with the nematicide carbofuran. Monthly assessments of shoot biomass and nematode populations were made from each treated and control site for two growing seasons. Seasonal mean density of root-feeding nematodes...
Article
The impact of nematode consumption on aboveground net primary production (ANPP) was addressed by treating two areas of mixed-grass prairie with the nematicide carbofuran. Monthly assessments of shoot biomass and nematode populations were made from each treated and control site for two growing seasons. Seasonal mean density of root-feeding nematodes...
Article
Sideoats grama were grown in soil with and without the root-feeding ectoparasitic nematode Tylenchorhynchus claytoni. Half the plants in each treatment were defoliated at weekly intervals. Root biomass, shoot biomass and tiller number were significantly decreased by either defoliation or nematode feeding; combined defoliation and root feeding reduc...
Article
Full-text available
Blue grama Bouteloua gracilis was grown in gnotobiotic plant microcosms inoculated with Pseudomonas paucimobilis and with or without the plant ectoparasitic nematode Tylenchorhynchus claytoni. Plants inoculated with T. claytoni had less root biomass than controls on each of 4 sample dates but this was not significant. Shoot biomass, however, was si...
Article
Full-text available
Habitat constraints, life history strategies, and physiology of nematodes, examined by habitat type and trophic guild, affect size-frequency distributions. Although unimodal size-frequency distributions have been found for many animal taxa, nematodes have a strongly biomadal size-frequency distribution, apparently because of the dichotomy in life h...
Article
Full-text available
Because of the selectively permeable nature of nematode cuticles, staining of nematodes has been difficult. This paper reports the effect of Pronase and collagenase on cuticle permeability to five stains. Collagenase increased the rate of staining in both laboratory and field populations of dead nematodes. Live nematodes, however, did not absorb st...

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