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Filtering by: Creator Schmidt, Mariek E. Academic Affiliation Crop and Soil Science Advisor Dick, Richard P.

Soil quality dynamics in an integrated reduced-tillage and cover-cropped vegetable agroecosystem

Creator:

Banners, Candace R.

Abstract:

Soil response and function were investigated following the adoption of an integrated reduced-tillage and cover-cropped vegetable system in the Willamette Valley of Western Oregon. The experiment was conducted over three cropping seasons (2002-2004) at the Oregon State University Vegetable Research Farm (Corvallis, OR). The design was a randomized complete-block with...

Resource Type:

Masters Thesis

Full Text:

to Soil Microbiology. John Wiley and Sons, New York. Amézketa, E. 1999. Soil aggregate stability: A
Microbial community structure as influenced by season and stand age in a Douglas-fir (Pseudotsuga menziesii) ecosystem

Creator:

Kucera, Jennifer Moore

Abstract:

Forest harvest can have significant impacts on forest ecosystems that may influence the capacity of soils to sequester carbon (C). The microbial community controls decomposition, which is a critical process in partitioning litter- and root-C between CO₂ and storage in semi-permanent soil-C pools. The objectives of this study were to...

Resource Type:

Dissertation

Full Text:

available P in forest floors from coniferous stands (Schmidt et al., 1996; Lindo and Visser, 2003). In
Cover crops and biochemical functional diversity in relation to nitrogen availability in soil

Creator:

Burket, John Zimmerman

Abstract:

Nitrogen availability in agricultural soils from fertilizer, plant residue inputs, and soil organic matter has important implications beyond crop yield. Legume winter cover crops and one fourth the recommended N rate on sweet corn resulted in yields equivalent to those at the recommended rate in the Willamette Valley of western...

Resource Type:

Dissertation

Full Text:

al., 1988; Fisk and Schmidt, 1995), and is a significant source of N nutrition for plants