Index Catalog // ScholarsArchive@OSU

Yield responses of invasive grasses to carbon doses

Creator:: Brunson, Jessi L.
Abstract:: The sagebrush steppe ecosystem of the northern Great Basin is severely degraded and continues to decline due in large part to the invasive, non-native annual grasses Bromus tectorum L. (cheatgrass) and Taeniatherum caput-medusae (L.) Nevski (medusahead). Restoration of invasive-dominated areas is difficult, but can be enhanced by adding a carbon...
Resource Type:: Masters Thesis
Full Text:: (b, d, f) in mg/kg soil at Lincoln Bench by date

Evaluation and use of a soil mineralizable nitrogen test to determine the fertilizer nitrogen needs of winter wheat grown in western Oregon

Creator:: Baloch, Dost M.
Abstract:: The assessment of optimum nitrogen (N) fertilizer need for winter wheat (Triticum aestivum L.) is important for economic and environmental sustainability. A comprehensive understanding of fertilizer N requirement depends on estimation of the quantity of N needed by the crop versus that supplied by soil. The objectives of this study...
Resource Type:: Dissertation
Full Text:: Evaluation and Use of a Soil Mineralizable Nitrogen Test to

Cover crop dry matter and nitrogen accumulation in Western Oregon

Creator:: Sattell, Robert, Buford, Thomas, Murray, Helene, Dick, Richard, McGrath, Daniel M. (Daniel Morton), and Oregon State University. Extension Service
Abstract:: Cover crop selection and management depend on many factors, among them the cover crop’s ability to accumulate dry matter (i.e., residues) and nitrogen (N). Dry matter provides energy for soil organisms, contributes to soil organic matter, improves tilth, and acts as a sink for nutrients.
Resource Type:: Technical Report
Full Text:: Oregon EM 8739 • October 1999 $1.50 Cover Crop Dry Matter and Nitrogen Accumulation in Western Oregon R

N processing in grass seed crops differing in soil drainage and disturbance in western Oregon, U.S.A.

Creator:: Nelson, Machelle A.
Abstract:: A better understanding of grass seed crop and soil fertility is necessary to improve fertilizer practices and preserving water quality in Willamette Valley, Oregon, where 55% of land-use is in grass seed production that directly impacts adjacent waterways containing native protected fish species. I determined tillage effects on soil N...
Resource Type:: Masters Thesis
Full Text:: Seed Crops Differing in Soil Drainage and Disturbance in West n Oregon, U.S.A. Abstract approved

Effects of residual and applied nitrogen on Nugaines wheat

Creator:: Laopirojana, Pojanee
Abstract:: A study was made to evaluate the effect of different rates of N fertilization on Nugaines wheat. The variable N treatments provided different N regimes as a basis for evaluating potential diagnostic tests for assessing the N status of the wheat plant. The crop was grown in Lane county during...
Resource Type:: Masters Thesis
Full Text:: Residual and Applied Nitrogen on Nugaines Wheat by Pojanee Laopirojana A THESIS submitted to Oregon

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:: Nitrogen Availability in Soil by John Z. Burket A DISSERTATION submitted to Oregon State

Nitrogen and dry matter relationships for winter wheats produced in western Oregon

Creator:: Locke, Kerry A.
Resource Type:: Dissertation
Full Text:: Philosophy in Crop and Soil Science presented on March 8, 1991. Title: Nitrogen and Dry Matter

The effects of nitrogen manipulations and hydrology on the establishment and competitive abilities of wetland prairie plant species (western Oregon)

Creator:: Davis, Kimberly J.
Abstract:: Many studies suggest that weedy plant species are most successful when soil nitrogen in abundant. Consequently, I used soil nitrogen manipulations to determine if altering nitrogen would affect the establishment of both weedy and native plant species in a western Oregon wetland prairie. In two studies, we added carbon amendments...
Resource Type:: Dissertation
Full Text:: : Mark V. Wilson Many studies suggest that weedy plant species are most successful when soil nitrogen

Evaluation of soil and plant analyses as components of a nitrogen monitoring program for silage corn

Creator:: Marx, Ernest S.
Resource Type:: Masters Thesis
Full Text:: efficiency, growers need methods for evaluating corn crop nitrogen status. This study examined several soil

Nitrogen dynamics in western Oregon perennial grass pastures fertilized with dairy manure

Creator:: Baumeister, Nancy C.
Resource Type:: Masters Thesis
Full Text:: exclusion of plant roots on soil water relations. Nitrogen Dynamics in Western Oregon Perennial Grass

ScholarsArchive@OSU

Yield responses of invasive grasses to carbon doses

Evaluation and use of a soil mineralizable nitrogen test to determine the fertilizer nitrogen needs of winter wheat grown in western Oregon

Cover crop dry matter and nitrogen accumulation in Western Oregon

N processing in grass seed crops differing in soil drainage and disturbance in western Oregon, U.S.A.

Effects of residual and applied nitrogen on Nugaines wheat

Cover crops and biochemical functional diversity in relation to nitrogen availability in soil

Nitrogen and dry matter relationships for winter wheats produced in western Oregon

The effects of nitrogen manipulations and hydrology on the establishment and competitive abilities of wetland prairie plant species (western Oregon)

Evaluation of soil and plant analyses as components of a nitrogen monitoring program for silage corn

Nitrogen dynamics in western Oregon perennial grass pastures fertilized with dairy manure

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