Nitrogen fertilizer rate and application timing effects on growth and seed-oil yield of meadowfoam Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/zc77st701

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • Meadowfoam has been identified as a potential oilseed crop for production on poorly drained soils in areas with cool, moist winters. The effects of N fertilizer on meadowfoam (Limnanthes alba Benth.) have been studied in Oregon and Maryland, but the results have not been consistent with respect to the effects on oil yield: yields were reduced in most cases but significantly increased in another. Excessive lodging and incidence of fungal infection were associated with N fertilization in some studies. This study evaluated the effects of twelve combinations of N rate and timing on meadowfoam oil yields and on plant growth and development. Meadowfoam selection 703-A received 50, 100, and 200 kg N ha -1 applied in fall, winter, spring, and fall/spring application schedules (regimes). Each N treatment and the control were replicated four times in randomized complete blocks on the Hyslop Research Station of Oregon State University in Corvallis, Oregon. All N treatment means for seed and oil yield were greater than the control mean. Winter applications of N fertilizer increased the efficiency of fertilizer use, increased floral density, produced relatively early dry weight gains and flowering, and increased seed-oil content. Fall-applied fertilizer N responses were reduced by leaching losses, but it appeared that some quantity of N fertilizer should be applied in the fall and another application made in late winter (before March) for optimal seed-oil yields. Fall applications of slow-release forms of N should also be studied.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Kim Stowell (ksscannerosu@gmail.com) on 2013-06-27T23:23:00Z No. of bitstreams: 1 McGahueyMichael L1986.pdf: 422643 bytes, checksum: 701d9a1fb946b2840787098423886acf (MD5)
  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2013-07-10T22:42:38Z (GMT) No. of bitstreams: 1 McGahueyMichael L1986.pdf: 422643 bytes, checksum: 701d9a1fb946b2840787098423886acf (MD5)
  • description.provenance : Made available in DSpace on 2013-07-10T22:42:38Z (GMT). No. of bitstreams: 1 McGahueyMichael L1986.pdf: 422643 bytes, checksum: 701d9a1fb946b2840787098423886acf (MD5) Previous issue date: 1985-04-25
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-07-01T19:50:00Z (GMT) No. of bitstreams: 1 McGahueyMichael L1986.pdf: 422643 bytes, checksum: 701d9a1fb946b2840787098423886acf (MD5)

Relationships

In Administrative Set:
Last modified: 08/22/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items