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Revegetation Strategies and Technologies for Restoration of Aridic Saltcedar (Tamarix spp.) Infestation SitesAuthor(s): Kenneth D. Lair
Source: In: Riley, L.E.; Dumroese, R.K.; Landis, T.D., tech. coords. 2006. National Proceedings: Forest and Conservation Nursery Associations - 2005. Proc. RMRS-P-43. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 10-20
Publication Series: Proceedings (P)
Station: Rocky Mountain Research Station
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DescriptionCritical knowledge gaps exist regarding vegetative recovery in aridic, monotypic saltcedar (Tamarix spp.) stands with no desirable understory plants. Formulation of revegetation strategies that provide site stabilization, resistance to further saltcedar and secondary weed infestation, and acceptable habitat values for affected wildlife species becomes particularly problematic in monotypic saltcedar stands under biological, fire, and herbicidal (that is, nonmechanical) control scenarios. Amount and density of standing biomass (live and dead) remaining after control pose limitations in relation to seeding and outplanting techniques, seed interception in aerial (broadcast) applications, and seedbed preparation methods. Undisturbed soil surfaces impacted by saltcedar leaf litter accumulation, salinity, hummocky micro relief, and nutrient limitations restrict potential for successful revegetation. Long duration of saltcedar occupation may deplete desirable microbial communities, particularly arbuscular (endo)mycorrhizae symbiotic and host-specific to native revegetation species. Selected results of innovative revegetation strategies at study sites on the Rio Grande and the Colorado River are discussed. Technical approaches include: 1) soil surface and rhizosphere manipulation methods to facilitate removal of standing dead biomass, increase precipitation capture, improve soil moisture retention, and create microsites exhibiting lower salinity and increased protection from environmental extremes for improved seed germination; 2) salinity remediation using HydraHume™; 3) seeding methodologies, including use of seed coating techniques; and 4) mycorrhizal inoculation methods.
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CitationLair, Kenneth D. 2006. Revegetation Strategies and Technologies for Restoration of Aridic Saltcedar (Tamarix spp.) Infestation Sites. In: Riley, L.E.; Dumroese, R.K.; Landis, T.D., tech. coords. 2006. National Proceedings: Forest and Conservation Nursery Associations - 2005. Proc. RMRS-P-43. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 10-20
Keywordsseedbed manipulation, mycorrhizal inoculation, triclopyr, mulching, Atriplex
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