Chemical forms of cadmium in two calcareous soil textural classes as affected by application of cadmium-enriched compost and incubation time

Rajaie, Majid; Karimian, N.; Maftoun, M.; Yasrebi, Jafar; Assad, M. T.

doi:10.1016/j.geoderma.2006.04.007

Cited by 55 publications

(25 citation statements)

References 30 publications

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“…Duncan's new multiple range tests of mean contents of Pb fractions at different time of incubation showed that the decreases of Sol-Exch, AOM and AFeOx fractions of Pb and the increase of Res fraction of Pb were significant in soils (P \ 0.05). The change of chemical forms of heavy metals and their conversion into less soluble forms in the course of time have also been reported by others (Mann and Ritchie 1994;Lim et al 2002;Lu et al 2005;Rajaie et al 2006;Jalali and Khanlari 2007). Figures 3 and 4 show the distribution of Pb among the fractions in the temperate and semiarid soils at the end of incubation, respectively.…”

Section: The Effect Of Time On Pb Fractions In Soilssupporting

confidence: 78%

Changes in chemical forms of lead in temperate and semiarid soils in sterile and unsterile conditions

Sinegani

Araki

2009

Environ Chem Lett

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Section: The Effect Of Time On Pb Fractions In Soilssupporting

confidence: 78%

Changes in chemical forms of lead in temperate and semiarid soils in sterile and unsterile conditions

Sinegani

Araki

2009

Environ Chem Lett

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“…This can be due to low concentration of these elements in MWC (Table 2) and the high pH and retention capacity of the calcareous soil under study. Rajaie et al (2006) evaluated the chemical forms of cadmium in two calcareous soil textural classes as affected by application of cadmium-enriched compost and incubation time. Results showed that large proportion of added Cd was converted to carbonate fraction and approximately stayed the same throughout the course of the experiment.…”

Section: Resultsmentioning

confidence: 99%

Effects of municipal waste compost and nitrogen fertilizer on growth and mineral composition of tomato

Rajaie¹,

Tavakoly²

2016

Int J Recycl Org Waste Agricult

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Purpose Since simultaneous use of organic and mineral fertilizers on the basis of their chemical compositions can lead to better plant growth and soil fertility, the roles of municipal waste compost (MWC) and nitrogen (N) fertilizer on growth and mineral composition of tomato and some soil properties were evaluated under greenhouse condition. Methods Treatments involved four MWC rates (0, 1, 2, and 4% on the basis of soil dry weight) and four N levels (0, 50, 100, and 200 mg kg -1 soil). Red cloud variety of tomato was sown in treated soils and 9 weeks later dried plant shoots and soil sub-samples were subjected to analysis. Results Combined use of MWC and N led to better growth of tomato than sole application of either MWC or N fertilizer. Plant concentration and/or uptake of nitrogen, phosphorus, zinc, copper, iron, and manganese were increased by both MWC and N. The beneficial effect of MWC on nutrients uptake was more pronounced with N addition. Plant and soil concentrations of cadmium and lead were under the detection limit of atomic absorption spectrophotometer. Soluble salts, organic matter, sodium, chloride and DTPA-extractable zinc, copper, iron, and manganese in the soil were effectively increased with addition of MWC.Conclusions Due to high soil pH and calcium carbonate equivalent (CCE) values of the calcareous soil, MWC heavy metals had no hazardous effect on tomato and even played a nutritional role. The most important problem raised from MWC application was the accumulation of soluble salts in the soil which must be monitored when making repeated application of MWC over an extended period of time.

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“…In this study, dry biomass of plants (wheat and maize) significantly increased in Cdcontaminated soil, which might be due to immobilization of Cd in amended soil (Tables 2, 3). Businelli et al (2009) reported reduction in the bioavailability of metals in soil amended with organic matter, while Rajaie et al (2006) reported highest metal availability in soil after addition of organic matter to soil. Bioavailable fraction of metals depends upon soil characteristics, climatic conditions, and the native microbial activity that converts compost and other organic material into mineral form (Clemente et al 2006).…”

Section: Tissue CD Concentration and Translocationmentioning

confidence: 96%

Organic amendments: effects on cereals growth and cadmium remediation

Ahmad

Akhtar

Zahir

et al. 2014

Int. J. Environ. Sci. Technol.

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Cadmium (Cd) is one of the toxic metals that adversely affect plant growth. Organic amendments may not only enhance nutrient status of soil, but they may also form complexes with Cd and reduce its availability to plants. This experiment was conducted to determine whether organic amendments (compost and biogas slurry) could stabilize/extract Cd and alleviate the adverse effects of Cd on the growth of two cereals, wheat and maize. Organic amendments along with four varying levels of Cd (0, 5, 20, 50 mg kg -1 soil) were prepared with soil. Effect of these amendments on tolerance indices, root/shoot dry biomass, tissue Cd concentration, Cd uptake and translocation were studied. Biogas slurry caused maximum increase in tolerance indices of wheat and maize (100-112 and 117-133 %, respectively, as compared to control), whereas compost caused significant increase in their dry biomass. Negative correlation between root dry biomass of wheat (r = -0.37) and maize (r = -0.53) to Cd revealed its suppressive effects. Dry biomass of plant correlated with organic amendments in wheat (r = 0.83-0.98), whereas weak correlation was observed in maize (r = 0.30-0.40). Compost significantly reduced Cd uptake in wheat and maize; however, it increased Cd translocation in plants. Based on the results of this study, root was the major sink of Cd when soil was amended with or without organic amendments. Biogas slurry removed 97 % Cd from artificially polluted water after 13 h at pH 6. The additions of compost in soil and biogas slurry in wastewater are recommended to stabilize/extract Cd.

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Chemical forms of cadmium in two calcareous soil textural classes as affected by application of cadmium-enriched compost and incubation time

Cited by 55 publications

References 30 publications

Changes in chemical forms of lead in temperate and semiarid soils in sterile and unsterile conditions

Changes in chemical forms of lead in temperate and semiarid soils in sterile and unsterile conditions

Effects of municipal waste compost and nitrogen fertilizer on growth and mineral composition of tomato

Organic amendments: effects on cereals growth and cadmium remediation

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