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Filtering by: Subject Soils -- Lead content -- Oregon Remove constraint Subject: Soils -- Lead content -- Oregon Degree Field Crop Science Remove constraint Degree Field: Crop Science

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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:

IN WESTERN OREGON CHAPTER 1 INTRODUCTION The importance of a quick, reliable soil N
Effects of winter cover crops following potato (Solanum tuberosum L.) on soil nitrate and soil fertility in the Columbia Basin

Creator:

Fernando, M.F. Sydney W.

Resource Type:

Dissertation

Full Text:

central Oregon. The use of winter cover crops to reduce residual soil NO3- N has been studied previously
Spring nitrogen and cultivar effects on winter canola (Brassica napus L.) production in western Oregon

Creator:

Ferguson, Brock T.

Abstract:

Limited information is available on the effects of applied spring nitrogen (N) and cultivar on winter canola (Brassica napus L.) production in high-rainfall environments. The objectives of this investigation were: (i) to determine the effects of spring N and winter canola cultivars on seed and oil production characteristics, and (ii)...

Resource Type:

Masters Thesis

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including soil temperature and seed zone water content. One limitation to the planting of winter canola
Deep soil nitrogen survey, Lower Umatilla Basin, Oregon

Creator:

del Nero, Zachary Augustus

Abstract:

Soils of 49 agricultural and 2 "native condition" sites in the Lower Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning in Fall of 1992. Several sites were sampled in Spring and Fall 1993 in order to indicate movement or loss of residual soil nitrogen over time....

Resource Type:

Masters Thesis

Full Text:

Deep soil nitrogen survey, Lower Umatilla Basin, Oregon AN

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Academic Affiliation

Crop and Soil Science4

Advisor

Chastain, Thomas G.1
Karow, Russell S.1
Mosley, Alvin R.1
Warkentin, Benno P.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1995 to 2015

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Committee Member

Boydston, Rick1
Christensen, Neil W.1
Clough, George1
Elias, Sabry1
Hannaway, D. B.1
more Committee Members »

Creator

Baloch, Dost M.1
del Nero, Zachary Augustus1
Ferguson, Brock T.1
Fernando, M.F. Sydney W.1

Date

Date range begin – Date range end

Current results range from 1994 to 2015

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Decade

2010-20191
1990-19993

Degree Field

Crop Science[remove]4

Degree Level

Doctoral2
Master's2

Degree Name

Doctor of Philosophy (Ph.D.)2
Master of Science (M.S.)2

Language

English [eng]4

License

All rights reserved1

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No3

Resource Type

Dissertation2
Masters Thesis2

Rights Statement

Copyright Not Evaluated3
In Copyright1

Subject

Canola -- Fertilizers -- Oregon, Western1
Canola -- Soils -- Nitrogen content -- Oregon, Western1
Canola -- Yields -- Oregon, Western1
Cover crops -- Columbia River Watershed1
Cover crops -- Oregon1
more Subjects »

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