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Arbuscular mycorrhizal fungi associated with Populus-Salix stands in a semiarid riparian ecosystem.

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This study examined the activity, species richness, and species composition of the arbuscular mycorrhizal fungal (AMF) community of Populus-Salix stands on the Verde River (Arizona, USA), quantified patterns of AMF richness and colonization along complex floodplain gradients, and identified

A feasibility study of a Salix viminalis gravel hydroponic system to renovate primary settled wastewater.

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A Salix viminalis/gravel system based on hydroponics was developed for wastewater renovation in order to avoid the problems of soil damage and pollution associated with long-term application of wastewater to soil. For such a system to work the mineral elements applied must match closely the

Physiological and biochemical responses of Salix integra Thunb. under copper stress as affected by soil flooding.

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To explore the joint effect of copper (Cu) and flooding on Salix integra Thunb. (S. integra), the physiological and biochemical parameters of the seedlings grown in Cu amended soil (50, 150, 450 mg kg-1) with or without the flooding for 60 days were evaluated. The results suggested that the flooding

Rhizospheric mobilization and plant uptake of radiocesium from weathered micas: I. Influence of potassium depletion.

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Potassium depletion in the soil solution around plant roots promotes the root uptake of radiocesium. However, it can also induce the transformation of mica through the release of interlayer K. In bulk soil, the formation of frayed edge sites (FES) with a high selectivity for Cs adsorption is usually

Effect of planting and fertilization on lead partitioning in dredged sediment.

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Dredging has been practiced to remove sediment impacted by persistent contaminants, such as heavy metals. Of these metals, lead (Pb) is of particular concern due to its toxicity. Therefore, dredged sediment containing Pb requires further mitigation. One method for Pb mitigation is phytoremediation

The potential for phytoremediation of iron cyanide complex by willows.

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Hybrid willows (Salix matsudana Koidz x Salix alba L.), weeping willows (Salix babylonica L.) and hankow willows (Salix matsudana Koidz) were exposed to potassium ferrocyanide to determine the potential of these plants to extract, transport and metabolize this iron cyanide complex. Young rooted

Removal of cyanide by woody plants.

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Hydrogen cyanide is a high volume production chemical that causes severe environmental problems. The toxicity of potassium cyanide (KCN) to basket willow trees (Salix viminalis) was tested. In aqueous solution, 2 mg CN l(-1) as KCN depressed the transpiration after 72 h about 50%. Trees exposed to

Direct measurement of sieve tube turgor pressure using severed aphid stylets.

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Turgor pressure in individual sieve tubes was measured directly by gluing capillary micromanometers over exuding aphid stylets with cyanoac-rylate adhesive. Pressures of up to 10 bars were measured in sieve tubes of Salix babylonica, with an estimated accuracy of +/- 0.3 bars or better.For

Phytotoxicity of cyanide to weeping willow trees.

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BACKGROUND Cyanide is found predominantly in industrial effluents generated by metallurgical operations. It is an extremely toxic compound, so that problems and catastrophic accidents have recently occurred all around the globe. The goal of this study was to determine the toxicity of cyanide to a

Rhizospheric mobilization and plant uptake of radiocesium from weathered micas: II. Influence of mineral alterability.

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Acute K depletion in the rhizosphere can lead to increased root uptake of radiocesium. Two processes can govern this increase: the very low uptake of potassium and the weathering of Cs-fixing clay minerals. Their respective importance is, however, unknown. We investigated the effects of these

Characterization of Croatian Rape (Brassica sp.) Honey by Pollen Spectrum, Physicochemical Characteristics, and Multielement analysis by ICP-OES.

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Rape (Brassica sp.) unifloral honey from Croatia was characterized by certain physicochemical parameters, micro- and macroelement content, and pollen spectrum, as determined in 21 honey samples. The Brassica sp. pollen type was predominant in the analyzed samples and ranged between 60 and 98%, with

Effect of temperature on the uptake and metabolism of cyanide by weeping willows.

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Plants' uptake and metabolism of cyanide in response to changes in temperature was investigated. Pre-rooted weeping willows (Salix babylonica L.) were exposed to hydroponic solution spiked with potassium cyanide for 2-3 d. Ten different temperatures were used, ranging from 11 degrees C to 32 degrees

Evidence for solution flow in the phloem of willow.

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Sucrose specific mass transfer measurements were made in a translocating willow shoot (Salix viminalis L.) by a steady state labelling technique and the translocate sucrose specific activity, concentration and velocity monitored by analysis of the honeydew from two colonies of the willow aphid

The effect of temperature on the rate of cyanide metabolism of two woody plants.

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The response of cyanide metabolism rates of two woody plants to changes in temperature is investigated. Detached leaves (1.0 g fresh weight) from weeping willow (Salix babylonica L.) and Chinese elder (Sambucus chinensis Lindl.) were kept in glass vessels with 100ml of aqueous solution spiked with

Water Renew systems: wastewater polishing using renewable energy crops.

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Macronutrients concentrations were measured during the establishment year of short rotation coppice of Salix viminalis, Populus trichocarpa, Eucalyptus gunnii irrigated with secondary treated effluent. Twenty four plots of 12.25 m2 located in Cranfield, Bedfordshire, UK on heavy fine clay were

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