Reduction of Cadmium Uptake of Rice Plants Using Soil Amendments in High Cadmium Contaminated Soil: A Pot Experiment

To study the cadmium accumulation characteristics of Solanum nigrum with different ploidies, the biomass, cadmium content and cadmium accumulation of diploid (Solanum photeinocarpum), tetraploid (Solanum photeinocarpum) and hexaploid (Solanum nigrum) were measured by a pot experiment. The results showed that the biomass of roots, stems, leaves and shoots of S. nigrum plants with different ploidy all ranked as follows: hexaploid > tetraploid > diploid. Cadmium content and cadmium accumulation in stems, leaves and shoots of hexaploid plants were significantly higher than those in tetraploid and diploid plants, and the cadmium translocation factor and translocation accumulation factor of hexaploid were the largest, too. Therefore, hexaploid S. nigrum had a highest ability to extract and transport cadmium, which can be used as an ideal plant for remediation of cadmium-contaminated soil.

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Role of Nitrogen Fertilizer on Cadmium Uptake by Ramie (Boehmeria nivea (L.) Gaudich) Grown on Cadmium Contaminated Soil

Agrikultura ◽

10.24198/agrikultura.v26i1.8460 ◽

2015 ◽

Vol 26 (1) ◽

Author(s):

Reginawanti Hindersah ◽

Anne Nurbaity ◽

Dedi Nursyamsi

Keyword(s):

Nitrogen Fertilizer ◽

Contaminated Soil ◽

Cadmium Concentration ◽

Dry Weight ◽

Cadmium Uptake ◽

Edible Plant ◽

Boehmeria Nivea ◽

Shoot Dry Weight ◽

High Level ◽

Cadmium Contaminated Soil

ABSTRACTContinues phosphate fertilization as well as organic matter amendment can increase cadmium concentrationin soil and induce more cadmium uptake by plants. Pytoremediation using non edible plant such as ramie(Boehmeria nivea L. Goud) is cheap and effective method to extract Cd from Cd-contaminated soil. Since inplant tissue Cd is bound in phytochelatin peptide which contains nitrogen and sulphur, the objective of thisgreen house experiment was to assess the influence of nitrogen fertilizer in form of urea on cadmiumuptake, nitrogen and sulphur concentration in shoots as well as shoot dry weight of 60-day old ramiegrown in cadmium-contaminated soil. The experiment was set up in a Split Plot Design with two treatmentsand three replications. The main plot was cadmium levels (0, 10 and 15 mg kg-1) and subplot was urea level(0, 5.0 and 7.5 g pot-1). The result showed that the increase of cadmium concentration in soil enhanced itsconcentration in ramie shoot regardless of urea levels. However either cadmium or urea did not changesulphur concentration in ramie shoot. Urea of 7,5 g/pot increased shoot dry weight but adding CdCl2.H2O of15 mg/kg did not change shoot dry weight. This experiment demonstrated that ramie was able to grow inrelatively high level of soil cadmium, and higher cadmium uptake by ramie shoot was not followed by anincrease in nitrogen as well as sulphur uptake.Keywords: Cadmium, Urea, Nitrogen, Sulphur, Ramie.

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Addition of straw from hyperaccumulator plants to cadmium-contaminated soil increases cadmium uptake by loquat seedlings

Environmental Monitoring and Assessment ◽

10.1007/s10661-017-5941-3 ◽

2017 ◽

Vol 189 (5) ◽

Cited By ~ 8

Author(s):

Lijin Lin ◽

Ming’an Liao ◽

Xiulan Lv ◽

Dong Liang ◽

Hui Xia ◽

...

Keyword(s):

Contaminated Soil ◽

Cadmium Uptake ◽

Hyperaccumulator Plants ◽

Cadmium Contaminated Soil

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Effect of Nano Zeolite on the Transformation of Cadmium Speciation and Its Uptake by Tobacco in Cadmium-contaminated Soil

Open Chemistry ◽

10.1515/chem-2018-0069 ◽

2018 ◽

Vol 16 (1) ◽

pp. 667-673 ◽

Cited By ~ 5

Author(s):

Qiulong Hu ◽

Wei-ai Zeng ◽

Fan Li ◽

Yanning Huang ◽

Songsong Gu ◽

...

Keyword(s):

Soil Ph ◽

Negative Correlation ◽

Contaminated Soil ◽

Pot Experiment ◽

Tobacco Plants ◽

Cadmium Speciation ◽

Better Than ◽

Cadmium Contaminated Soil ◽

Soil Cd

AbstractThe study was aimed at exploring the effects of applying ordinary and nano zeolite on the soil pH, soil available cadmium (Cd) content, soil Cd speciation and Cd uptakes by tobacco using pot experiment with simulated Cd contaminated soil indoors. The results showed that soil pH increased and available Cd content reduced with the amount of ordinary and nano zeolite increasing. Compared with the control, the application of ordinary and nano zeolite increased soil pH at 0.47 - 1.05 and 0.73 - 1.57, respectively, and reduced the available Cd contents at 19.3% - 32.7% and 23.2% - 40.5%, respectively. In addition, soil pH had significantly negative correlation with available Cd content in each treatment (p<0.05). Nano zeolite could more effectively reduce Cd contents of all parts of tobacco than ordinary zeolite with the same amount treatments, and Cd content in all parts of tobacco plants was positively correlated with soil available Cd content. The content of exchangeable Cd (EXE) in soil decreased to some extent with different zeolite treatments, application of nano zeolite was better than that of application of ordinary zeolite in reducing Cd bioavailability and transferability. Overall, application of nano zeolite has an advantage over ordinary zeolite in reducing available Cd content in soil and Cd content in tobacco.

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