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Filtering by: Subject Nitrates -- Environmental aspects -- Oregon -- Morrow County Academic Affiliation Crop and Soil Science

Nitrate leaching and model evaluation under winter cover crops

Creator:

Minshew, Hudson F.

Resource Type:

Masters Thesis

Full Text:

of Master of Science in Soil Science presented on November 11, 1998. Title: Nitrate Leaching and
Nitrate and water under terraced dryland wheat production in Oregon

Creator:

Strock, Jeffrey S.

Abstract:

Dry land agriculture using summer fallow is a common crop production practice in the Columbia Plateau region of eastern Oregon. Farmed-over level terraces are used to control surface water runoff and soil erosion. More than 70 percent of the average annual precipitation around Pendleton, Oregon (350 - 400 mm) falls...

Resource Type:

Masters Thesis

Full Text:

Nitrate and water under terraced dryland wheat production in
Deep soil nitrogen survey, Lower Umatilla Basin, Oregon

Creator:

del Nero, Zachary Augustus

Abstract:

Soils of 49 agricultural and 2 "native condition" sites in the Lower Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning in Fall of 1992. Several sites were sampled in Spring and Fall 1993 in order to indicate movement or loss of residual soil nitrogen over time....

Resource Type:

Masters Thesis

Full Text:

Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning