Index Catalog // ScholarsArchive@OSU

Creator:: Oregon State University. Extension Service and Selker, John S.
Abstract:: We first need to note that the soil nitrogen that makes plants green is primarily in the form of nitrate, and this nitrogen is accessible to plants specifically because it stays dissolved in the soil water. In a typical corn field, where the bulk of the roots are in the...
Resource Type:: Technical Report
Full Text:: Production John Selker below the root zone responded to irrigation-driven percolation as mint fields were

Creator:: Oregon State University. Extension Service, Selker, John, and Rupp, David Earl
Abstract:: Directly below commercial mint fields, percolation in excess of 10 ppm of nitrogen as nitrate (NO3 --N), the EPA drinking water standard, occurs for much of the year (Figure 1, page 2). Concentrations rise rapidly after irrigation starts in June, indicating that this nitrogen is being pushed through by irrigation...
Resource Type:: Technical Report
Full Text:: John Selker and David Rupp John Selker, professor of bioengineering; David Rupp, graduate research

Creator:: Oregon State University. Extension Service, Feaga, Jeff, and Selker, John S.
Abstract:: According to the United States Geological Survey, 9 percent of wells in the Willamette Valley exceed the EPA’s 10 ppm drinking water standard for nitrogen in the NO3– compound, or NO3–-N. A study of 281 domestic drinking water wells in Lane County showed that 22 percent of the wells exceeded...
Resource Type:: Technical Report
Full Text:: Arbor, Michigan. Sattell, R., R. Dick, D. Hemphill, J. Selker, F. Brandi- Dohrn, H. Minshew, M. Hess, J

Creator:: Parrish, Christopher E., Mason, H. Benjamin, Trehu, Anne M., Hollinger, Geoffrey A., Selker, John S., and Zhang, Eugene
Abstract:: The workshop was funded by the National Science Foundation (NSF), OCE Division of Ocean Sciences (Award # 1817257). This report summarizes the key findings, outcomes, and recommendations of the workshop and serves as a draft of the comprehensive roadmap.
Resource Type:: Technical Report
Full Text:: E. Parrish, H. Benjamin Mason, Anne M. Trehu, Geoffrey A. Hollinger, John S. Selker, and Eugene

Creator:: Sattell, Robert, Dick, Richard, Hemphill, Delbert D., Selker, John S., Brandi-Dohrn, Florian M., Minchew, Hudson, Hess, Marlo, Sandeno, Joan, Kaufman, Susan M., and Oregon State University. Extension Service
Abstract:: Declared out of print April 2010. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: Nitrate Leaching in Western Oregon EM R. Sattell, R. Dick, D. Hemphill, J. Selker, F. Brandi-Dohrn, H

Creator:: Feaga, Jeff and Oregon State University. Agricultural Experiment Station
Abstract:: Published January 2004. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report
Full Text:: . Selker, F. Brandi

Creator:: Sattell, Robert, Buford, Thomas, Murray, Helene, Dick, Richard, McGrath, Daniel M. (Daniel Morton), and Oregon State University. Extension Service
Abstract:: Cover crop selection and management depend on many factors, among them the cover crop’s ability to accumulate dry matter (i.e., residues) and nitrogen (N). Dry matter provides energy for soil organisms, contributes to soil organic matter, improves tilth, and acts as a sink for nutrients.
Resource Type:: Technical Report
Full Text:: Brandi-Dohrn, F., R.P. Dick, M. Hess, S.M. Kaufman, D.D. Hemphill, and J.S. Selker. Nitrate leaching

Creator:: Hart, John M. (John Mervyn), 1947-, Sullivan, Dan M. (Dan Matthew), 1954-, Mellbye, Mark Edward, Hulting, Andrew Gerald, Christensen, Neil Walter, 1944-, Gingrich, Gale Allen, and Oregon State University. Extension Service
Abstract:: This publication replaces FG 15-E, Peppermint: West of Cascades Fertilizer Guide.
Resource Type:: Technical Report
Full Text:: are produced with ample daylight (usually more than 14 hours), warm day- time temperatures (85–95°F

Creator:: Hemphill, Delbert D., Jr. and Oregon State University. Agricultural Experiment Station
Abstract:: We have conducted a full-time program of vegetable crop research at the North Willamette Research and Extension Center (formerly the North Willamette Experiment Station) since 1976. The Center, a branch of both Oregon State University's Agricultural Experiment Station and its Extension Service, is just north of Aurora, a historic farming...
Resource Type:: Technical Report
Full Text:: University, Corvallis, OR 97331. Dr. John Selker is Associate Professor, Department of Bioresources

Creator:: Hart, John M. (John Mervyn), 1947-, Sullivan, Dan M. (Dan Matthew), 1954-, Myers, J. R., Peachey, Ronald Edward, and Oregon State University. Extension Service
Abstract:: This is a nutrient management guide for sweet corn growers and agricultural professionals working with sweet corn growers.
Resource Type:: Technical Report
Full Text:: plant-available P. Research from California showed a 40 percent reduction in available P with a 20°F

ScholarsArchive@OSU