Cadmium uptake by garland chrysanthemum can be predicted from the cadmium in the soil solution, independent of soil type

Kamewada, Kunihiko; Nakayama, Megumi

doi:10.1111/j.1747-0765.2009.00380.x

Cited by 11 publications

(13 citation statements)

References 21 publications

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“…The Cd ion-pairs and their equilibrium constants used in the AdamsCalc computer program are shown in Table 2 (Lindsay 1979); details of the calculation methods are shown in Kamewada and Nakayama (2009 …”

Section: Characterization Of the Soil Solutionmentioning

confidence: 99%

“…In Kamewada and Nakayama (2009), the Cd adsorption kinetics were investigated using a monodentate coordination model, which enabled (Cd 2þ ) in the soil solution to be explained by:…”

Section: Validating the Modelmentioning

confidence: 99%

“…We assumed that (Cd 2þ ) is dominated by adsorption equilibrium expressed by the following stoichiometric formula, as described in Kamewada and Nakayama (2009):…”

Section: Characterization Of the Soil Solutionmentioning

confidence: 99%

“…In an earlier study aimed at deriving a new method for evaluating plant-available Cd in unsaturated soil (Kamewada and Nakayama 2009), we conducted a pot trial to investigate the effects of soil Cd content, soil pH, soil type, and soil Cl À content on Cd uptake by garland chrysanthemum (Chrysanthemum coronarium cv. Kiwame-Cyuba).…”

mentioning

confidence: 99%

“…) for major electrolytes concentrations and EC of soil solutions collected from the pot experiment reported in Kamewada and Nakayama (2009) were used to calculate f Cd , from which the following exponential regression curve between f Cd and EC was obtained:…”

mentioning

confidence: 99%

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A widely applicable model for predicting the cadmium concentration in soil solution

Kamewada

Nakayama

2011

Soil Science and Plant Nutrition

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We developed a method for predicting the total cadmium (Cd) concentration [Cd T . From this, we derived the balance equationWe calculated (CdCl þ ) as the product of (Cd 2þ ), chloride activity (Cl -), and a production constant. Our proposed prediction model wasWe conducted an experiment using six types of soil and manipulated the Cd content, pH, and chloride concentration [Cl À ] to determine the effect on Cd concentration in the soil solution. The soil solution measurements produced rectilinear regression relationships between log(Cd 2þ ) and log Q Cd -0.6pH with slopes of 1.0 in all soil types, which validated the proposed Cd adsorption-desorption stoichiometry; the y-intercept of the regression lines represented log(K Cd /C Cd ) and depended on the soil type. Furthermore, we were able to predict log(K Cd /C Cd ) as a function of cation exchange capacity (CEC), and the activity coefficient

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Section: Characterization Of the Soil Solutionmentioning

confidence: 99%

“…In Kamewada and Nakayama (2009), the Cd adsorption kinetics were investigated using a monodentate coordination model, which enabled (Cd 2þ ) in the soil solution to be explained by:…”

Section: Validating the Modelmentioning

confidence: 99%

“…We assumed that (Cd 2þ ) is dominated by adsorption equilibrium expressed by the following stoichiometric formula, as described in Kamewada and Nakayama (2009):…”

Section: Characterization Of the Soil Solutionmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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A widely applicable model for predicting the cadmium concentration in soil solution

Kamewada

Nakayama

2011

Soil Science and Plant Nutrition

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Soil‐solution speciation by MINEQL+4.6 model and plant uptake of Cd and Zn by barley (Hordeum vulgare L.) after application of different phosphate fertilizers

Mahdy

2012

Z. Pflanzenernähr. Bodenk.

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A greenhouse experiment was conducted to investigate the immediate effect of application of mono-ammonium phosphate (MAP), single superphosphate (SSP), and triple superphosphate (TSP) fertilizers containing varying concentrations of Cd on (1) chemical speciation of Cd and Zn in soil solution by chemical-equilibrium calculations (MINEQL+4.6 model), (2) growth of barley plants, (3) concentrations of Cd, P, and Zn in soil solution and plant tissue, as well as total plant accumulation of Cd, P, and Zn, and (4) monitoring pH and element changes during incubation periods following phosphate application. Results show that, in general, the pH of soil solution increased during the first 40 d of incubation, then declined. Also, at the end of incubation period, pH of soil solution was affected by fertilization source and fertilization rate. The concentration of Cd in soil solution changed with time. Phosphate fertilization (p < 0.05) or fertilizer source (p < 0.05) showed consistent effects. Also, the application of phosphate fertilizers with three rates significantly increased Zn concentrations in soil solution during the first half (0-30 d) of incubation period and then decreased but still more than in the control. In general, application of different sources of phosphate at 100 g kg -1 did not change the dominant forms of Cd in soil solution during all incubation time intervals. Speciation of Zn in the control after 30 d of incubation had changed, in comparison to 10 d of incubation, and the dominant forms were Zn 2+ , ZnOH + , ZnHCO 3 , ZnCO 3 (aq), and Zn(OH) 2 (aq). Adding phosphate fertilizer significantly increased both shoot and root dry weight compared to control, indicating P was a growth-limiting factor in the control plants. The Zn concentrations in shoot and root were lower in the TSP-and SSP-fertilizers treatment than those in the MAP and fertilizer treatments at all rates of fertilization. Adding phosphate increased the Cd : Zn and P : Zn ratios in the shoot and root tissue, with the effect being greater with increasing fertilization rate. Phosphate fertilization greatly increased the total accumulation of Cd of barley compared with the control plants (p < 0.001), with the effect being greater with increasing fertilization rate. Source and rate of fertilizers, and their interactions had significant effect (p < 0.05) on Cd accumulation in the whole plant.

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Concentration of cadmium in durum wheat as affected by time, source and placement of nitrogen fertilization under reduced and conventional-tillage management

et al. 2010

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Cadmium concentration in durum (Triticum durum L.) grain may be influenced by fertilizer management. A three year field study was conducted at two locations in southwestern Manitoba, Canada, to determine the effect of source, timing and placement of N fertilizer on grain Cd concentration of durum wheat under reduced-tillage (RT) and conventionaltillage (CT) management. There was a significant year-to-year variation in grain yield and grain Cd concentration, indicating a strong effect of environment on phytoavailability of Cd. Soil type also had a dominating effect on Cd in durum grain. Grain Cd concentration and accumulation were always lower at the Newdale clay loam (CL) location than the Stockton fine sandy loam (FSL) location. Compared to CT, RT management decreased grain Cd concentration and accumulation. Application of N fertilizer significantly increased grain Cd concentration and decreased grain Zn concentration. The increase in grain Cd could be due to the increasing Cd concentration in soil solution, the improved crop growth, or a competitive interaction between Cd and Zn for binding sites in the soil system and for uptake sites in the roots, following the application of N fertilizer. Time, source and placement of N fertilization showed inconsistent effect on grain yield and grain Cd concentration. The effects when observed were minor compared to effects of year and soil type on grain Cd concentration. Application of anhydrous ammonia (NH 3 ) generally resulted in higher Cd concentration in durum grain than application of same level of other N sources including urea ammonium nitrate (UAN), urea and ammonium nitrate (AN), probably due to greater N efficiency from the NH 3 as compared to the other sources. Where differences due to placement occurred, banded application of fertilizers generally resulted in higher Cd concentration in durum grain than did dual-banded placement, indicating a higher fertilizer availability. Soil type, year and N fertilization greatly affected concentration of Cd in durum grain. Selection of a suitable source, timing and placement combination of N fertilization is important in optimizing crop yield and minimizing grain Cd concentration.

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Cadmium uptake by garland chrysanthemum can be predicted from the cadmium in the soil solution, independent of soil type

Cited by 11 publications

References 21 publications

A widely applicable model for predicting the cadmium concentration in soil solution

A widely applicable model for predicting the cadmium concentration in soil solution

Soil‐solution speciation by MINEQL+4.6 model and plant uptake of Cd and Zn by barley (Hordeum vulgare L.) after application of different phosphate fertilizers

Concentration of cadmium in durum wheat as affected by time, source and placement of nitrogen fertilization under reduced and conventional-tillage management

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