Index Catalog // ScholarsArchive@OSU

Estimating plant-available nitrogen from manure

Creator:: Oregon State University. Extension Service and Sullivan, Dan M. (Dan Matthew), 1954-
Abstract:: Nutrient management plans for crops require estimates of plant-available nitrogen (PAN) provided by application of manure or compost. Recent developments have stimulated interest in utilizing manure nitrogen (N) as a resource. These factors include the following: • Increased cost of N fertilizers • Increased value of PAN from manure on...
Resource Type:: Technical Report
Full Text:: State University Extension Service) Estimating Plant-available Nitrogen from Manure EM 8954-E

Estimating plant-available nitrogen release from cover crops

Creator:: Sullivan, Dan M. (Dan Matthew), 1954-, Andrews, N. (Nick), and Oregon State University. Extension Service
Abstract:: This publication assists western Oregon farmers and agricultural professionals in determining the nitrogen fertilizer replacement value of winter cover crops. Includes information on plant-available nitrogen (PAN) basics; a site-specific, step-by-step method to estimate PAN; Willamette Valley case studies; and appendices summarizing Willamette Valley cover crop research that supports these PAN...
Resource Type:: Technical Report
Full Text:: nitrogEn rElEasE from covEr crops D.M. Sullivan and N.D. Andrews Dan M. Sullivan, Extension soil

Soil carbon and nitrogen in old-growth forests in western Oregon and Washington

Creator:: Remillard, Suzanne Marie
Abstract:: Soil organic carbon (SOC, kg C m-2) is an important component in evaluating global C stores. The nitrogen (TN, kg N m"2) cycle is closely linked to C and understanding its role is also important. Contents and distributions of SOC and TN in soil profiles, to 1-meter depth, were estimated...
Resource Type:: Masters Thesis
Full Text:: . DISTRIBUTION OF SOIL CARBON AND NITROGEN IN OLD-GROWTH FORESTS IN WESTERN OREGON AND WASHINGTON

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:: Grass Seed Crops Differing in Soil Drainage and Disturbance in Western Oregon, U.S.A.. by Machelle A

Nitrogen dynamics across silvicultural canopy gaps in young forests of western Oregon

Creator:: Thiel, Aaron L.
Abstract:: Silvicultural canopy gaps are emerging as an alternative management tool to accelerate development of complex forest structure in young, even-aged forests of the Pacific Northwest. I investigated patterns of nitrogen (N) availability along transects through 0.1 and 0.4 ha silvicultural gaps in three 50-70 year old Douglas-fir forests of western...
Resource Type:: Masters Thesis
Full Text:: 21, 2008. Title: Nitrogen Dynamics Across Silvicultural Canopy Gaps in Young Forests of Western

Using the nitrogen mineralization soil test to predict spring fertilizer N rate for soft white winter wheat grown in western Oregon

Creator:: Anderson, Nicole P., Hart, John M. (John Mervyn), 1947-, Christensen, Neil Walter, 1944-, Mellbye, Mark Edward, Flowers, Michael Darrell, 1971-, and Oregon State University. Extension Service
Abstract:: Soft white winter wheat is grown in western Oregon and requires a spring application of nitrogen (N) fertilizer for optimum production. Determining the amount of N to apply has been a challenge for growers. Wheat obtains N from two sources: soil and fertilizer. Both available and mineralizable N can be...
Resource Type:: Technical Report
Full Text:: . Anderson or M.D. Flowers, OSU Department of Crop and Soil Science. Using the Nitrogen Mineralization Soil

Acidifying soil for crop production west of the Cascade Mountains

Creator:: Oregon State University. Extension Service, Horneck, Donald Arthur, Hart, John M. (John Mervyn), 1947-, Stevens, R., Petrie, S., and Altland, James Elmer, 1973-
Abstract:: Soil acidification sometimes is necessary for optimum plant growth west of the Cascade Mountain Range. Commercial producers of blueberries, azaleas, rhododendrons, and other ornamentals may need to reduce soil pH for optimum production. Soil acidification is best performed prior to planting; it is much more difficult in established plantings. No...
Resource Type:: Technical Report
Full Text:: : Western Oregon and Washington, EM 8857-E (Oregon State University Extension Service) EM 8857-E

Using the nitrogen mineralization soil test to predict spring fertilizer N rate : soft white winter wheat grown in western Oregon

Creator:: Oregon State University. Extension Service, Hart, John M. (John Mervyn), 1947-, Christensen, Neil Walter, 1944-, Mellbye, Mark Edward, and Flowers, Michael Darrell, 1971-
Abstract:: Soft white winter wheat grown in western Oregon requires a spring application of nitrogen (N) fertilizer for optimum production. Determining the amount of N to apply has been a challenge for growers because wheat is produced in numerous rotations that provide varying amounts of N to the wheat crop. Inadequate...
Resource Type:: Technical Report
Full Text:: Using the Nitrogen Mineralization Soil Test to Predict

Non-linear nitrogen dynamics and calcium depletion along a temperate forest soil nitrogen gradient

Creator:: Sinkhorn, Emily R.
Abstract:: Understanding how N availability influences base cation stores is critical for long-term ecosystem sustainability. Indices of nitrogen (N) availability and the distribution of nutrients in plant biomass, soil, and soil water were examined across ten young, unpolluted Douglas-fir (Pseudotsuga menziesii) stands in the Oregon Coast Range spanning a three-fold soil...
Resource Type:: Masters Thesis
Full Text:: nitrogen in old-growth forests in western Oregon and Washington. Forest Science. Oregon State University

Nitrogen transformation and losses in Walla Walla silt loam soil as influenced by wheat straw and nitrogenous fertilizers

Creator:: Chandra, Purna
Resource Type:: Dissertation
Full Text:: and wheat straw in Walls Walla silt loam soil as Influenced by rates and sources of added nitrogen

ScholarsArchive@OSU

Estimating plant-available nitrogen from manure

Estimating plant-available nitrogen release from cover crops

Soil carbon and nitrogen in old-growth forests in western Oregon and Washington

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

Nitrogen dynamics across silvicultural canopy gaps in young forests of western Oregon

Using the nitrogen mineralization soil test to predict spring fertilizer N rate for soft white winter wheat grown in western Oregon

Acidifying soil for crop production west of the Cascade Mountains

Using the nitrogen mineralization soil test to predict spring fertilizer N rate : soft white winter wheat grown in western Oregon

Non-linear nitrogen dynamics and calcium depletion along a temperate forest soil nitrogen gradient

Nitrogen transformation and losses in Walla Walla silt loam soil as influenced by wheat straw and nitrogenous fertilizers

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