A reproducible system for evaluating forest fire retardants
Document Type: Book
Author(s): R. W. Johansen
Publication Year: 1967

Cataloging Information

  • chemistry
  • fire management
  • fire retardants
  • flame length
  • heat
  • laboratory fires
  • photography
  • rate of spread
  • statistical analysis
  • woody fuels
Record Maintained By:
Record Last Modified: August 6, 2018
FRAMES Record Number: 26533
Tall Timbers Record Number: 253
TTRS Location Status: In-file
TTRS Call Number: A13.78:SE-26
TTRS Abstract Status: Fair use, Okay, Reproduced by permission

This bibliographic record was either created or modified by the Tall Timbers Research Station and Land Conservancy and is provided without charge to promote research and education in Fire Ecology. The E.V. Komarek Fire Ecology Database is the intellectual property of the Tall Timbers Research Station and Land Conservancy.


A method for testing the effectiveness of fire-retardant chemicals on woody fuels has been developed. The test involves the use of a preconstructed wood crib, one-half of which is treated with a fire retardant. The speed with flames pass through the treated portion of the crib is plotted over the weight of dry chemical present. A regression curve is plotted for each chemical that reflects treatment effectiveness in accordance with amount of chemical present. The most effective chemical has the steepest curve. Of the chemicals tested, the best 'effectiveness' ratings belong to ammonium sulfamate, ammonium phosphates (DAP, MAP, and 11-37-0), and ammonium sulfate in that order.

Johansen, R. W. 1967. A reproducible system for evaluating forest fire retardants. Research Paper SE-26. Asheville, NC, USDA Forest Service, Southeastern Forest Experiment Station.