Predicting success of prescribed fires in pinyon-juniper woodland in Nevada / [book]

Allen D. Bruner, Don A. Klebenow
1979 unpublished
RESEARCH SUMMARY Prescribed burning is an inexpensive management tool which can be used for converting pinyon-juniper woodlands to brush-grassland communities that benefit wildlife and livestock grazing. One of the difficulties of prescribed burUing is predicting whether or not conditions are right for a successful burn. In this study, 30 prescribed burns were attempted out of fire season from fall 1974 to fall 1976. These attempts were made during varied atmospheric conditions and in several
more » ... nyon-juniper communities, but only 12 of the 30 attempts were successful. An analysis of the burns showed that the success of a burn could be predicted accurately (89 percent) by adding together the maximum windspeed in miles per hour, the air temperature in degrees Fahrenheit, and the percentage of vegetation cover (windspeed [mi/h] + air temperature [OF] + vegetation cover [percent] = score). If the score thus obtained was less than 110, the fire would not burn; if it was greater than 130 it was too hazardous to light. Scores between 110 and 125 produced fires Which needed continual retorching, and scores between 126 ana 130 produced fires that carried by themselves and created clean burns. Fires were most successful in dispersed, scattered and dense pinvon-juniper stands, less successful in open and closed stands. The best ignition technique was to have two people walk perpendicular to the wind along the wIndward edge of the area to be burned headfiring and ignite trees using smudge pot lighters.
doi:10.5962/bhl.title.69037 fatcat:y4ayhnoqczgyljvl7i33qtkz5a