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Research ArticleResearch Section

Linear anionic polyacrylamide as an effective post-fire soil treatment: Understanding the chemistry and physical science

R.A. Davidson, C.F. Davidson and A. Roa-Espinosa
Journal of Soil and Water Conservation July 2009, 64 (4) 243-252; DOI: https://doi.org/10.2489/jswc.64.4.243
R.A. Davidson
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C.F. Davidson
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A. Roa-Espinosa
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Abstract

Controlling erosion, reestablishing vegetation, and overcoming the negative effects of hydrophobic soils has long been a challenge following catastrophic wildfire on forested lands and rangelands. A three-year controlled study was recently completed to compare polyacrylamide soil treatment to the traditional cover method using agricultural straw on high severity burned soils of the Red Bull Fire, which burned through the Uinta National Forest near Provo, Utah, in July and August of 2004. Weed free, recycled paper pellets containing polyacrylamide were found to be an effective Burn Area Emergency Rehabilitation treatment option on clay rich soils containing divalent cations (i.e., Ca2+) within the soil matrix. This study showed aerial application of the granular polyacrylamide pellets resulted in an even distribution of the polymer-based product on the soil surface. Through water activation, a blend of water-soluble linear anionic polyacrylamide copolymers are slowly released, which bind with the soil particles, structurally stabilizing the soil. When compared to agricultural straw, polyacrylamide results show improved revegetation, reduced soil hydrophobicity, and reduced soil erosion.

Footnotes

  • Robert A. Davidson is a soil scientist for the Uinta-Wasatch-Cache National Forest and the Manti-La Sal National Forest, USDA Forest Service, Provo, Utah. Charles F. Davidson is a professor in the Department of Chemistry, Weber State University, Ogden, Utah. Aicardo Roa-Espinosa is a visiting professor, University of Wisconsin-Madison, Madison, Wisconsin.

  • © 2009 by the Soil and Water Conservation Society

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Journal of Soil and Water Conservation: 64 (4)
Journal of Soil and Water Conservation
Vol. 64, Issue 4
July/August 2009
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Linear anionic polyacrylamide as an effective post-fire soil treatment: Understanding the chemistry and physical science
R.A. Davidson, C.F. Davidson, A. Roa-Espinosa
Journal of Soil and Water Conservation Jul 2009, 64 (4) 243-252; DOI: 10.2489/jswc.64.4.243

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Linear anionic polyacrylamide as an effective post-fire soil treatment: Understanding the chemistry and physical science
R.A. Davidson, C.F. Davidson, A. Roa-Espinosa
Journal of Soil and Water Conservation Jul 2009, 64 (4) 243-252; DOI: 10.2489/jswc.64.4.243
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