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Filtering by: Subject Organic farming -- Oregon Remove constraint Subject: Organic farming -- Oregon Degree Field Soil Science Remove constraint Degree Field: Soil Science

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Cultural controls for suppressing Phytophthora cinnamomi root rot of blueberry

Creator:

Yeo, John R.

Abstract:

Phytophthora cinnamomi is a soilborne pathogen that causes root rot disease of highbush blueberry (Vaccinium corymbosum L.). When new installations of susceptible blueberry cultivars are infected with P. cinnamomi, plants often fail to grow significant new tissue, greatly reducing yields over the life of the planting. Chemical fungicides are available...

Resource Type:

Dissertation

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(gypsum and a variety of organic materials) via a series of trials in the greenhouse. Based on the
Estimating the dry matter production, nitrogen requirements, and yield of organic farm-grown potatoes

Creator:

McQueen, John Paul Gainer

Abstract:

As part of a participatory research project, where farmers and Oregon State University researchers collaborated, aspects of potato (Solanum tuberosum L.) growing systems were studied. It was determined through conversations with the farmers that quantification of certain growth parameters of potato was lacking, including dry matter accumulation, crop nitrogen (N)...

Resource Type:

Masters Thesis

Full Text:

concerning the growth of potato (Solanum tuberosum L.) on organic farms in Oregon and western Washington
Nitrogen dynamics in western Oregon perennial grass pastures fertilized with dairy manure

Creator:

Baumeister, Nancy C.

Resource Type:

Masters Thesis

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Nitrogen dynamics in western Oregon perennial grass
Quantifying C and N contents and isotope signatures of SOM pools in the H. J. Andrews DIRT plots

Creator:

Keirstead, Heath

Abstract:

The mechanisms governing short- and long-term belowground carbon dynamics need to be understood. As part of a larger project developed to assess the effect of quantity and quality of litter inputs on the rate of soil organic matter (SOM) formation, I examined SOM in the H. J. Andrews Detritus Input...

Resource Type:

Masters Thesis

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organic matter (SOM) formation, I examined SOM in the H. J. Andrews Detritus Input and Removal

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Academic Affiliation

Crop and Soil Science4

Advisor

Sullivan, Dan M.2
Myrold, David D.1
Sulzman, Elizabeth W.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1993 to 2015

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Committee Member

Bryla, David R.1
Hart, John1
Kowalewsky, Alec1
Pschedit, Jay1
Stone, Alexandra1
more Committee Members »

Creator

Baumeister, Nancy C.1
Keirstead, Heath1
Mcqueen, John Paul Gainer1
Yeo, John R.1

Date

Date range begin – Date range end

Current results range from 1992 to 2014

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Decade

2010-20191
2000-20092
1990-19991

Degree Field

Soil Science[remove]4

Degree Level

Master's3
Doctoral1

Degree Name

Master of Science (M.S.)3
Doctor of Philosophy (Ph.D.)1

File Format

application/pdf1

Language

English [eng]4

License

All rights reserved3

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No4

Resource Type

Masters Thesis3
Dissertation1

Rights Statement

In Copyright3
Copyright Not Evaluated1

Subject

Blueberries -- Diseases and pests -- Cultural control1
Blueberries -- Organic farming1
Denitrification1
Gypsum as soil amendment1
Nitrogen fertilizers -- Northwest, Pacific1
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