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Filtering by: Date issued sim 1987-08-24 Degree Level Master's Language English [eng]

Effects of grazing management and tree planting pattern in a young Douglas-fir argoforest

Creator:

Carlson, Deirdre H.

Abstract:

A silvopastoral system using a Douglas-fir (Pseudotsuga menziesii) tree crop and subclover (Trifolium subterraneum) as a nitrogen-fixing forage crop was investigated near Corvallis, Oregon, during 1983-1985. Treatments included all possible combinations of three planting patterns (no trees, trees planted 2.5 m apart in a grid, and clusters of five trees...

Resource Type:

Masters Thesis
Response of Cuscuta campestris and Cuscuta indecora to glyphosate applied after attachment to alfalfa (Medicago sativa)

Creator:

Fessehaie, Rezene

Abstract:

The response to glyphosate [N-(phosphonomethyl) glycine] of two dodder species Cuscuta campestris Yuncker (field dodder) and Cuscuta indecora Chiosy (largeseed dodder) parasitizing alfalfa (Medicago sativa L.) was compared. In the absence of glyphosate, alfalfa was killed or severely injured by parasitism from uncontrolled dodder. Results of field experiments in which...

Resource Type:

Masters Thesis
An investigation of the relation between total ozone and synoptic tropospheric disturbances

Creator:

Pirlet, Andre Jean

Abstract:

It has been shown by Schlesinger and Mintz (1979) that the UCLA general circulation model (GCM) is able to simulate the observed negative correlation between the total amount of ozone in a vertical atmospheric column (the total ozone) and the eastward-propagating synoptic disturbances in the troposphere, with the total ozone...

Resource Type:

Masters Thesis