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Filtering by: Creator Hemphill, Delbert D. Degree Level Master's Subject Cover crops -- Oregon

Integration of conservation tilage and cover crops in broccoli production systems of the Pacific Northwest

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
Weed suppression in vegetables with residues of 'micah' barley (Horedeum vulgare L.) and other spring cereals

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
Assessment of variability and monitoring methods for leaching under cover crop management

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