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Filtering by: Creator Mangum, Doris Louella Academic Affiliation Soil Science

The status of organic materials in several southern Willamette Valley grassland soils

Creator:

Laurent, Tom Edwin

Resource Type:

Masters Thesis
Silicic acid and oxidizable carbon movement in a Walla Walla silt loam as related to long-term residue and nitrogen applications

Creator:

Douglas, Clyde Lee

Abstract:

Intensive cultivation of Walla Walla silt loams (coarse silty, mixed, mesic, typic Haploxeroll) in eastern Oregon and Washington during the past 50 years, has decreased internal soil drainage in the 15 to 40 cm layer. However, no measurements have been made to determine the causes and corrective management for this...

Resource Type:

Dissertation