Other Scholarly Content
 

Western spruce budworm 1/ control project on the Big Timber Ranger District, Gallatin National Forest, Montana

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/defaults/7p88ch910

Descriptions

Attribute NameValues
Creator
Abstract
  • The microbial insecticide, Bacillus thuringensis (Bt), was applied from fixed-wing aircraft to approximately 700 acres of western spruce budworm host type at the rate of 12 billion international units (BIU's) per gallon of water per acre. The objective of this control project was foliage protection to insure future cone production for this timber sale area. Evaluations, 20 days after spray application, showed the adjusted defoliation was 38.2 percent in the sprayed areas and 66.4 percent in the unsprayed areas at the termination of the budworm feeding period. Population reduction, corrected for natural mortality at 20 days, was 68 and 81 percent at the time of moth emergence.
Resource Type
Date Available
Date Issued
Series
Subject
Rights Statement
Publisher
Language
File Format
File Extent
  • 2469438 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

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details no._87-8_ocr.pdf 2017-07-20 Public Download