Effects of Irrigation Frequency and Nitrogen Fertilizer Rate on Water Stress, Nitrogen Uptake, and Plant Growth of Container-grown Rhododendron Public Deposited

http://ir.library.oregonstate.edu/concern/defaults/s1784m356

This is the publisher’s final pdf. The published article is copyrighted by American Society for Horticultural Science and can be found at:  http://pubs.ashspublications.org/.

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • The influence of irrigation frequency (same amount of water per day given at different times) and nitrogen (N) fertilizer rate on water stress [stomatal conductance (gs)], N uptake, and growth (biomass) of container-grown evergreen Rhododendron 'P.J.M. Compact' and 'English Roseum' and deciduous Rhododendron 'Gibraltar' was evaluated. Both N deficiency and high N rate increased water stress. Water stress was greatest in plants fertilized with the highest N rate and gs of plants grown with the higher N rates changed more in response to water deficits resulting from irrigation treatments and seasonal climatic changes. Watering plants more frequently decreased water stress of plants fertilized with higher N rates and altering irrigation frequency had little impact on alleviating water stress of N-deficient plants. Increasing irrigation frequency decreased N uptake efficiency (N uptake per gram N applied), increased N use efficiency (growth per gram N uptake) and altered biomass allocation with little influence on total plant biomass. Response of biomass allocation to N rates was similar among cultivars and response of biomass allocation to irrigation frequency varied among cultivars. Altering irrigation frequency changed either the availability of N in the growing substrate or the ability of roots to absorb N. Our results indicate that transitory increases in plant water stress can alter N uptake, N use, and plant form without detectable changes in total plant biomass.
Resource Type
Date Available
Date Issued
Citation
  • Scagel, C., Bi, G., Fuchigami, L., & Regan, R. (2011). Effects of irrigation frequency and nitrogen fertilizer rate on water stress, nitrogen uptake, and plant growth of container-grown rhododendron. HortScience, 46(12), 1598-1603.
Academic Affiliation
Series
Keyword
Rights Statement
Funding Statement (additional comments about funding)
Publisher
Peer Reviewed
Language
Replaces
Additional Information
  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2012-11-07T21:40:26Z No. of bitstreams: 1 ScagelCarolynFHorticultureEffectsIrrigationFrequency.pdf: 999348 bytes, checksum: 5540733fda1af4586159d1b58f24d29f (MD5)
  • description.provenance : Made available in DSpace on 2012-11-07T22:42:08Z (GMT). No. of bitstreams: 1 ScagelCarolynFHorticultureEffectsIrrigationFrequency.pdf: 999348 bytes, checksum: 5540733fda1af4586159d1b58f24d29f (MD5) Previous issue date: 2011-12
  • description.provenance : Approved for entry into archive by Deborah Campbell(deborah.campbell@oregonstate.edu) on 2012-11-07T22:42:08Z (GMT) No. of bitstreams: 1 ScagelCarolynFHorticultureEffectsIrrigationFrequency.pdf: 999348 bytes, checksum: 5540733fda1af4586159d1b58f24d29f (MD5)

Relationships

In Administrative Set:
Last modified: 07/11/2017

Downloadable Content

Download PDF
Citations:

EndNote | Zotero | Mendeley

Items