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Creator:: O'Brien, Timothy John
Abstract:: Field and greenhouse experiments were conducted in 1996 and 1997 to evaluate the effects of integrating conservation tillage and cover cropping on broccoli production as well as agroecological parameters. A field experiment was conducted during 1996-97 at the Oregon State University Horticulture Research farm near Corvallis, OR. The specific objectives...
Resource Type:: Masters Thesis
Full Text:: to extend thanks to my graduate committee members: Drs. Carol Mallory-Smith and Delbert Hemphill

Creator:: Sattell, Robert, Dick, Richard, Hemphill, Delbert D., McGrath, Daniel M. (Daniel Morton), and Oregon State University. Extension Service
Abstract:: Red clover is used successfully in Oregon as a fall-planted cover crop and green manure in rotations with vegetable crops.
Resource Type:: Technical Report
Full Text:: pratense) R. Sattell, R. Dick, D. Hemphill, and D. McGrath l s Red clover is an herbaceous perennial or

Creator:: Sattell, Robert, Dick, Richard, Hemphill, Delbert D., McGrath, Daniel M. (Daniel Morton), and Oregon State University. Extension Service
Abstract:: Subclovers are used for forage and hay and have been used successfully in Oregon as fall-planted and relay interplanted cover crops in annual rotations. They are capable of accumulating substantial amounts of N, a portion of which is available to the following crop. Rapid growth suppresses weeds in spring.
Resource Type:: Technical Report
Full Text:: CLOVERS (Trifolium subterraneum) R. Sattell, R. Dick, D. Hemphill, and D. McGrath Subterranean clovers

Creator:: Sattell, Robert, Dick, Richard, Hemphill, Delbert D., Luna, John, McGrath, Daniel M. (Daniel Morton), and Oregon State University. Extension Service
Abstract:: Crimson clover may be used as a cover crop, green manure, pasture, or hay. It often is used as a winter annual cover crop in annual rotations. It has been used successfully in reduced-tillage farming systems, and in orchards and vineyards where it can be managed to reseed itself.
Resource Type:: Technical Report
Full Text:: (Trifolium incarnatum L.) R. Sattell, R. Dick, D. Hemphill, J. Luna, and D. McGrath Crimson clover is an

Creator:: Chongwe, Edgar Happy
Abstract:: Three experiments whose objectives were to investigate cover crop kill by winter freeze, weed suppression by 'Micah' barley and other spring cereals, and allelopathic potential of cereal covers were conducted at the Vegetable Research Farm and in the greenhouse and growth chamber facilities at OSU in 1989/90. Kill by winter...
Resource Type:: Masters Thesis
Full Text:: , Drs. Ray D. William, Russell S. Karow and N.S. Mansour for their assistance and guidance in this

Creator:: Oregon State University. Extension Service, Sattell, Robert, and Dick, Richard
Abstract:: Published January 1998. 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:: science, Oregon State University Contributors Del Hemphill, professor of agriculture Russ Ingham

Creator:: Burket, John Zimmerman
Abstract:: Nitrogen availability in agricultural soils from fertilizer, plant residue inputs, and soil organic matter has important implications beyond crop yield. Legume winter cover crops and one fourth the recommended N rate on sweet corn resulted in yields equivalent to those at the recommended rate in the Willamette Valley of western...
Resource Type:: Dissertation
Full Text:: Cover Crops in Sweet Corn and Broccoli Rotations John Z. Burket, Delbert D. Hemphill, and Richard P

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:: . Sattell, T. Buford, H. Murray, R. Dick, and D. McGrath Robert Sattell, former faculty research assistant

Creator:: Hess, Mario
Abstract:: The contamination of ground water resources represents a serious problem and a prominent threat to the health of our society. This study focuses on the leaching of inorganic anions as a function of agricultural practices under natural field conditions. In order to enhance the understanding of such leaching processes, this...
Resource Type:: Masters Thesis
Full Text:: , to Jeoffrey Lewis, Joe Stravens, Gideon Abraham, Delbert Hemphill, Toralf Grossmann, Patrick Shelby

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