Other Scholarly Content

 

Nursery conifer diseases : evaluation of Benomyl to control root disease of Engelmann spruce seedlings Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/defaults/vq27zp88k

Descriptions

Attribute NameValues
Alternative Title
Creator
Abstract
  • The benomyl fungicide, rersan, applied at 7 and 14 pounds active ingredient per acre, on April 26 and July 25, 1973, was ineffective in reducing mortality in 2-0 Engelmann spruce seedlings derived from two different seed sources growing in three different nursery sections at the USFS Coeur d'Alene Nursery. Percent mortality in plots monitored over the entire summer was 8.6, 3.6 and 8.0 in sections 31, 36, and 37 respectively, and ranged from 0 to as high as 21.9 in individual mortality plots. Percent mortality in sections 31 and 37 was similar and significantly greater than in section 36, indicating variation in conditions associated with individual sections. Percent mortality combined for sections 36 and 37 (seed source 72-180) was significantly less than that for section 31 (seed source 72-144) indicating variation in host or seed lot susceptibility or tolerance. Higher rates of application, 28 and 42 pounds active per acre, applied during a second treatment period were ineffective. Because of experimental design inadequacies, however, the results are inconclusive. Bioassay studies to determine chemical distribution in soil and within seedlings were generally negative. Reasons for lack of control and negative assays are discussed. Isolation studies did reveal a high frequency of occurrence of Fusariuin spp. in dead seedlings, and disease expression increased with increasing summer temperatures, implicating fusarial pathogens in the causal complex.
Resource Type
Date Available
Date Issued
Series
Subject
Rights Statement
Publisher
Language
File Format
File Extent
  • 6957450 bytes
Digitization Specifications
  • Scanned at 600 DPI using a Cannon DR-9080C in TIF format. PDF generated through Capture Perfect using OmniPage Professional 15 for textual OCR.
Replaces
Additional Information
  • description.provenance : Made available in DSpace on 2006-11-09T18:34:48Z (GMT). No. of bitstreams: 1 no. 75-15_ocr.pdf: 6957450 bytes, checksum: a94ad20da452c19786b51429de7d051a (MD5) Previous issue date: 1975
  • description.provenance : Submitted by Adam Powell (powella@onid.orst.edu) on 2006-11-06T18:36:43Z No. of bitstreams: 1 no. 75-15_ocr.pdf: 6957450 bytes, checksum: a94ad20da452c19786b51429de7d051a (MD5)
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2006-11-09T18:34:46Z (GMT) No. of bitstreams: 1 no. 75-15_ocr.pdf: 6957450 bytes, checksum: a94ad20da452c19786b51429de7d051a (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2006-11-07T20:17:00Z (GMT) No. of bitstreams: 1 no. 75-15_ocr.pdf: 6957450 bytes, checksum: a94ad20da452c19786b51429de7d051a (MD5)

Relationships

Parents:

This work has no parents.

Items