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Filtering by: Creator Horneck, D.A. Committee Member Sullivan, Dan

Soil quality assessment of Willamette Valley soils and root colonization potential by arbuscular mycorrhizal fungi

Creator:

Allen, Natalie M.

Abstract:

Interest in measuring soil quality continues to increase worldwide in view of demands on land productivity and the necessity to preserve soil resources, yet identification of suitable indicators for soil quality assessment is still evolving. This study adapted 10 biological, physical, and chemical indicators of soil quality identified by the...

Resource Type:

Masters Thesis
Nitrogen mineralization from organic amendments during the second year following application

Creator:

Kusonwiriyawong, Charirat

Abstract:

Estimates of nitrogen (N) available from long-term application of organic amendments are required to balance N inputs with crop N requirements. Two studies were conducted to (1) determine N mineralized from organic amendments (manures and composts) during year 2 after application, and (2) compare plant-available N (PAN) determined via in...

Resource Type:

Masters Thesis
Influence of cover crop residue management on soil moisture, vine growth, and productivity in a pre-production vineyard in the Willamette Valley

Creator:

Curtis, Morgan A.

Abstract:

The use of cover crops in young vineyards is not widely accepted in the Pacific Northwest due to concerns of water and nutrient competition between the cover crop and vines. The last 2 years of a 4-year study started in 2009 are reported here. The study evaluated the use of...

Resource Type:

Masters Thesis

Full Text:

. Literature cited Ball, D.A., R. Parker, J. Colquhoun, and I. Dami. 2004. Preventing herbicide drift and