Sodium and chloride accumulation in leaf, woody, and root tissue of Populus after irrigation with landfill leachate

Zalesny, Jill A.; Zalesny, Ronald S.; Wiese, Adam H.; Sexton, Bart T.; Hall, Richard B.

doi:10.1016/j.envpol.2007.10.032

Cited by 57 publications

(55 citation statements)

References 26 publications

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“…Although actual phytoremediation effectiveness was not evaluated in these cycles, a longer (15-mo) in situ study (cycle 4) was conducted that involved evaluating approximately 20 traits. The tissue concentration of contaminants in the roots, stems, and leaves, along with soil and leachate concentrations, were tested (Zalesny et al, 2007a;2007b;2007c). Ultimately, superior clones will be selected for the resource manager as early as 21 mo from the planting of selection cycle 1.…”

Section: Discussionmentioning

confidence: 99%

Choosing Tree Genotypes for Phytoremediation of Landfill Leachate Using Phyto-Recurrent Selection

Zalesny

Wiese

et al. 2007

International Journal of Phytoremediation

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Information about the response of poplar (Populus spp.) genotypes to landfill leachate irrigation is needed, along with efficient methods for choosing genotypes based on leachate composition. Poplar clones were irrigated during three cycles of phyto-recurrent selection to test whether genotypes responded differently to leachate and water, and to test whether the methodology had merit as a tool for plant selection during remediation. Fifteen below-and above-ground traits were evaluated. Twenty-five clones were tested in cycle 1, while the best 12 genotypes were evaluated in cycles 2 and 3. Eight clones were selected and subsequently tested in an in situ landfill study (cycle 4). Results from cycles 1, 2, and 3 are presented here. Overall, clones responded differently to irrigation treatments, with certain genotypes exhibiting better below-and above-ground growth with water than leachate. However, growth was greater with leachate irrigation for some clones. In addition, differences between treatments within clones decreased with days after planting (DAP). There were no treatment differences for number of leaves, height, and root length at the end of cycle 2 (45 DAP) or cycle 3 (30 DAP). These results detail the extensive variation in clonal responses to leachate irrigation, along with the need and efficacy of using phyto-recurrent selection to choose superior genotypes.

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Section: Discussionmentioning

confidence: 99%

Choosing Tree Genotypes for Phytoremediation of Landfill Leachate Using Phyto-Recurrent Selection

Zalesny

Wiese

et al. 2007

International Journal of Phytoremediation

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“…Otherwise, the germination of these varieties is delayed by the salts in solution-treated wastewater that was disinfected during this phase. The salts caused the reported increase in the osmotic pressure of soil solution which has prevented the seed absorption and subsequently a poor port and then a reduction in performance [3,[7][8][9].…”

Section: Growth Parametersmentioning

confidence: 99%

Disinfection of Treated Wastewater and its Reuse in the Irrigation of Golf Grass: The Case of Plant M’zar Agadir-Morocco

Mouhanni¹,

Bendou²,

Er‐Raki

2011

Water

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Abstract:The treated wastewater of Agadir M'zar plant has a good physico-chemical quality and it contains important nutrients (NPK: nitrogen, phosphorus, potassium). However, the reuse of this water, without disinfecting it, for irrigating the golf grass in the Agadir region, revealed the presence of a bacterial load that can hinder the quality and suitability of spaces for a population that is very demanding. Among the various methods of water disinfection, chlorination with bleach is the least expensive and the most systematically simple. Its effectiveness depends only on the pH of the waters to be disinfected. This study reports the results of disinfection of M'zar plant wastewater with a solution of sodium hypochlorite (bleach), and their reuse for irrigating the golf grass. For this purpose, we carried out a monitoring protocol for germination and growth parameters (number of tillers and leaf length) in order to study and compare the effect of disinfected treated wastewater (DTWW) and groundwater (GW) on the plant turf. The obtained result showed that the disinfection with bleach increased the salinity of the treated wastewater and can affect the permeability of soils and crops.

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“…Sodium is thus the first cation to be leached, especially in a coarse textured soil with low cation exchange capacity. Our data suggest, therefore, a high sodium absorption potential for poplar roots, which makes this an interesting tree species in areas with repeated applications of highsalinity irrigation water (Zalesny et al 2008), or for phytoremediation projects involving high salinity landfill leachate.…”

Section: Discussionmentioning

confidence: 93%

Reduced soil nutrient leaching following the establishment of tree-based intercropping systems in eastern Canada

et al. 2011

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Tree-based intercropping (TBI) systems, combining agricultural alley crops with rows of hardwood trees, are largely absent in Canada. We tested the hypothesis that the roots of 5-8 years old hybrid poplars, growing in two TBI systems in southern Québec, would play a ''safety-net'' role of capturing nutrients leaching below the rooting zone of alley crops. TBI research plots at each site were trenched to a depth of 1 m on each side of an alley. Control plots were left with tree roots intact. In each treatment at each site, leachate at 70 cm soil depth was repeatedly sampled over two growing seasons using porous cup tension lysimeters, and analyzed for nutrient concentrations. Daily water percolation rates were estimated with the forest hydrology model ForHyM. Average nutrient concentrations for all days between consecutive sampling dates were multiplied by water percolation rates, yielding daily nutrient leaching loss estimates for each sampling step. We estimated that tree roots in the TBI system established on clay loam soil decreased subsoil NO 3 -leaching by 227 kg N ha -1 and 30 kg N ha -1 over two consecutive years, and decreased dissolved organic N (DON) leaching by 156 kg N ha -1 year -1 in the second year of the study. NH 4 ? leaching losses at the same site were higher when roots were present, but were 1-2 orders of magnitude lower than NO 3 -or DON leaching. At the sandy textured site, the safety net role of poplar roots with respect to N leaching was not as effective, perhaps because N leaching rates exceeded root N uptake by a wider margin than at the clay loam site. At the sandy textured site, significant and substantial reductions of sodium leaching were observed where tree roots were present. At both sites, tree roots reduced DON concentrations and the ratio of DON to inorganic N, perhaps by promoting microbial acquisition of DON through rhizodeposition. This study demonstrated a potential safety-net role by poplar roots in 5-8 yearold TBI systems in cold temperate regions.

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Sodium and chloride accumulation in leaf, woody, and root tissue of Populus after irrigation with landfill leachate

Cited by 57 publications

References 26 publications

Choosing Tree Genotypes for Phytoremediation of Landfill Leachate Using Phyto-Recurrent Selection

Choosing Tree Genotypes for Phytoremediation of Landfill Leachate Using Phyto-Recurrent Selection

Disinfection of Treated Wastewater and its Reuse in the Irrigation of Golf Grass: The Case of Plant M’zar Agadir-Morocco

Reduced soil nutrient leaching following the establishment of tree-based intercropping systems in eastern Canada

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