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Creator:: Camara, Kelli Marie
Abstract:: Winter wheat is commonly grown in dryland cropping systems in the Pacific Northwest region of semi-arid eastern Oregon. For agronomic, economic, and environmental reasons, it is important to understand the long-term sustainability of such dryland systems. The objective of this study was to evaluate the long-term effects of tillage, nitrogen...
Resource Type:: Masters Thesis
Full Text:: commonly grown in dryland cropping systems in the Pacific Northwest region of semi-arid eastern Oregon

Creator:: Shearin, Todd E.
Resource Type:: Masters Thesis
Full Text:: ZINC SUPPLIED BY MUNICIPAL BIOSOLIDS i;i Todd E. Shearin A THESIS submitted to Oregon State

Creator:: Petrie, S. E.
Abstract:: A series of field experiments was established in 1978, 1979, and 1980 on Lower Klamath Lake where Mn deficiency of oats had been observed in previous years. The pH of the soils ranged from 7.6 to 8.3 and the organic matter content was between 17 and 19%. The objectives of...
Resource Type:: Dissertation
Full Text:: N Fertilizer Effects on Soil Solution Mn and Mn Response

Creator:: Qureshi, Maqsood Hassan
Abstract:: Rotating wheat with other crops is a common practice in the Willamette Valley of western Oregon. Depending upon previous crop and soil type, current N fertilizer recommendations for wheat in the Willamette Valley vary widely. Excessive fertilizer poses environmental risk, whereas lower N inputs than required by the crop represent...
Resource Type:: Dissertation
Full Text:: different crops on a variety of soils in the Willamette Valley of western Oregon. Nitrogen fertilizer

Creator:: Chapin, Michele F.
Abstract:: Total organic carbon, total nitrogen, microbial respiration and enzyme activity (β-glucosidase) were measured on several horizons of a Dayton silt loam (fine, montmorillonitic, mesic, Typic Albaqualf) soil cropped to annual ryegrass under two straw residue management systems. The study evaluated the effects of annual burning of straw residues or annual...
Resource Type:: Masters Thesis
Full Text:: submitted to Oregon State University in partial fulfillment of the requirements for the degree of Master

ScholarsArchive@OSU