Index Catalog // ScholarsArchive@OSU

Comparison of Disturbed and Undisturbed Soil Core Methods to Estimate Nitrogen-Mineralization Rates in Manured Agricultural Soils

Creator:: Moberg, Dean P., Johnson, Richard L., and Sullivan, Dan M.
Abstract:: Ion exchange resin/soil cores are a common in situ approach to estimating soil nitrogen (N) mineralization rates. However, no studies compare the two common methods of core preparation (disturbed and undisturbed). The objective of our study was to compare N mineralized and soil temperature in disturbed versus undisturbed cores of...
Resource Type:: Article
Full Text:: during summer and winter. A total of 13 soil / incubation-period combinations were tested. Disturbed

Assessment of the Biological Control Potential of Common Carabid Beetle Species for Autumn- and Winter-Active Pests (Gastropoda, Lepidoptera, Diptera: Tipulidae) in Annual Ryegrass in Western Oregon

Creator:: Reich, Inga, Jessie, Casi, Ahn, Seung-Joon, Choi, Man-Yeon, Williams, Christopher, Gormally, Mike, and Mc Donnell, Rory
Abstract:: Many studies have shown that ground beetles feed on different agricultural pests, but little is known about their species communities from US cropping systems. We assessed the biological control potential of the most common carabid beetle species in Oregon annual ryegrass grown for seed by investigating spatial and temporal overlap...
Resource Type:: Article
Full Text:: laetulus—were also found to have consumed pests, they were active only during spring and summer, when crop

Camelina: Seed Yield Response to Applied Nitrogen and Sulfur

Creator:: Wysocki, Donald J., Chastain, Thomas G., Schillinger, William F., Guy, Stephen O., and Karow, Russell S.
Abstract:: Camelina (Camelina sativa L. Crantz) has received worldwide attention in recent years as a biofuel crop and as a broadleaf option in cereal-based cropping systems. The objective of our 3-year study was to determine camelina seed yield and nitrogen use efficiency (NUE) as affected by six applied nitrogen (N) rates...
Resource Type:: Article
Full Text:: majority of precipitation occurs 29 in the winter and summers are comparatively dry. Camelina responded

Frankliniella occidentalis (Pergande) integrated pest management programs for fruiting vegetables in Florida

Creator:: Demirozer, Ozan, Tyler-Julian, Kara, Funderburk, Joe, Leppla, Norm, and Reitz, Stuart
Abstract:: BACKGROUND: The spread of the western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), resulted in the worldwide destabilization of established integrated pest management programs for many crops. Efforts to control the pest and the thrips-vectored tospoviruses with calendar applications of broad-spectrum insecticides have been unsuccessful. The result has been a...
Resource Type:: Article
Full Text:: Pests, ed. by Lewis T. CAB International, Wallingford, Oxon, UK, pp. 197–216 (1997). 2 Childers CC

Short-term responses of native bees to livestock and implications for managing ecosystem services in grasslands

Creator:: Kimoto, Chiho, DeBano, Sandra J., Thorp, Robbin W., Taylor, Robert V., Schmalz, Heidi, DelCurto, Timothy, Johnson, Tracey, Kennedy, Patricia L., and Rao, Sujaya
Abstract:: Rangelands are significant providers of ecosystem services in agroecosystems world‐wide. Yet few studies have investigated how different intensities of livestock grazing impact one important provider of these ecosystem services—native bees. We conducted the first large‐scale manipulative study on the effect of a gradient of livestock grazing intensities on native bees...
Resource Type:: Article
Full Text:: that make up 35% of the world’s food supply (NRC 2007). The fitness of many cross-pollinat- ed, non

Removal of molluscicidal bait pellets by earthworms and its impact on control of the gray field slug (Derocerus reticulatum Mueller) in western Oregon grass seed fields

Creator:: Gavin, W. E., Mueller-Warrant, G. W., Griffith, S. M., and Banowetz, G. M.
Abstract:: Slugs are common pests of grass seed fields in western Oregon and the current focus of repeated, and often unsuccessful, efforts by growers to control them using molluscicides. Here we document rapid loss of molluscicidal bait pellets to earthworms and the resulting adverse effects on slug control. Three years of...
Resource Type:: Article
Full Text:: annual precipitation� 1000mm) and dry, moderate summers. Contrasting tillage practices employed at these

Crop Response to Lime in the Western United States

Creator:: Jackson, T. L. (Thomas Lloyd), 1922- and Reisenauer, H. M.
Abstract:: The western states include a complex combination of geological, topographical, climatic, and vegetative features. The region extends through 1900 km of latitude and contains three major north-south, storm-directing mountain systems. Most of the region is arid (annual precipitation < 50 em); however, sizeable agriculturally important areas west of the Cascade...
Resource Type:: Part of Book
Full Text:: the summers are dry. Second, west of the Cascade Range, temperature variation through the year is

Response of the nitrogen-fixing lichen Lobaria pulmonaria to phosphorus, molybdenum, and vanadium

Creator:: Marks, Jade A., Pett-Ridge, Julie C., Perakis, Steven S., Allen, Jessica L., and McCune, Bruce
Abstract:: Nitrogen-fixing lichens (cyanolichens) are an important source of nitrogen (N) in Pacific Northwest forests, but limitation of lichen growth by elements essential for N fixation is poorly understood. To investigate how nutrient limitation may affect cyanolichen growth rates, we fertilized a tripartite cyanobacterial lichen (Lobaria pulmonaria) and a green algal...
Resource Type:: Article
Full Text:: , widely distributed, well studied, and easily transplant- ed. Not only is it of conservation concern as an

Dynamics of ammonia oxidizing archaea and bacteria populations and contributions to soil nitrification potentials

Creator:: Taylor, Anne E., Zeglin, Lydia H., Wanzek, Thomas A., Myrold, David D., and Bottomley, Peter J.
Abstract:: It is well known that the ratio of ammonia oxidizing archaea (AOA) and bacteria (AOB) ranges widely in soils, but no data exist on what might influence this ratio, its dynamism, or how changes in relative abundance influences the potential contributions of AOA and AOB to soil nitrification. By sampling...
Resource Type:: Article
Full Text:: Characterization of study site. Corvallis OR has cool wet winters and warm dry summers 171 which is reflected in

1998 Seed production research at Oregon State University, USDA-ARS cooperating

Creator:: United States. Agricultural Research Service, Oregon State University. Department of Crop Science, and Youngberg, Harold W.
Resource Type:: Other
Full Text:: prevalent in years with dry conditions in late summer extending well into autumn. We used a rainfall

ScholarsArchive@OSU

Comparison of Disturbed and Undisturbed Soil Core Methods to Estimate Nitrogen-Mineralization Rates in Manured Agricultural Soils

Assessment of the Biological Control Potential of Common Carabid Beetle Species for Autumn- and Winter-Active Pests (Gastropoda, Lepidoptera, Diptera: Tipulidae) in Annual Ryegrass in Western Oregon

Camelina: Seed Yield Response to Applied Nitrogen and Sulfur

Frankliniella occidentalis (Pergande) integrated pest management programs for fruiting vegetables in Florida

Short-term responses of native bees to livestock and implications for managing ecosystem services in grasslands

Removal of molluscicidal bait pellets by earthworms and its impact on control of the gray field slug (Derocerus reticulatum Mueller) in western Oregon grass seed fields

Crop Response to Lime in the Western United States

Response of the nitrogen-fixing lichen Lobaria pulmonaria to phosphorus, molybdenum, and vanadium

Dynamics of ammonia oxidizing archaea and bacteria populations and contributions to soil nitrification potentials

1998 Seed production research at Oregon State University, USDA-ARS cooperating

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