Solubility and Lability of Cadmium and Zinc in Two Soils Treated With Organic Matter

Almås, Åsgeir R.; McBride, Murray B.; Singh, Bal Ram

doi:10.1097/00010694-200003000-00007

Cited by 82 publications

(38 citation statements)

References 30 publications

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“…In this investigation, however, the addition of sewage sludge at 45 and 90 t ha −1 raised the initial extractability of mobile Zn by 0.08% and 0.11% of total content, respectively (data not shown). This result concurs with that of Almas et al (2000) who found that addition of organic matter increased the solubility of Zn by formation of organo-metallic complexes. Our result provides good evidence that the mobilization of unavailable zinc in calcareous soil can be increased by the addition of sewage sludge.…”

Section: Effect Of Organic Wastes and Incubation Time On Dynamics Of supporting

confidence: 93%

Dynamics of Organic C Mineralization and the Mobile Fraction of Heavy Metals in a Calcareous Soil Incubated with Organic Wastes

Usman

Kuzyakov

Stahr

2004

Water, Air, & Soil Pollution

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Abstract. Organic wastes such as sewage sludge and compost increase the input of carbon and nutrients to the soil. However, sewage sludge-applied heavy metals, and organic pollutants adversely affect soil biochemical properties. Therefore, an incubation experiment lasting 90 days was carried out to evaluate the effect of the addition of two sources of organic C: sewage sludge or composted turf and plant residues to a calcareous soil at three rates (15, 45, and 90 t of dry matter ha −1 ) on pH, EC, dissolved organic C, humic substances C, organic matter mineralization, microbial biomass C, and metabolic quotient. The mobile fraction of heavy metals (Zn, Cd, Cu, Ni, and Pb) extracted by NH 4 NO 3 was also investigated.The addition of sewage sludge decreased soil pH and increased soil salinity to a greater extent than the addition of compost. Both sewage sludge and compost increased significantly the values of the cumulative C mineralized, dissolved organic C, humic and fulvic acid C, microbial biomass C, and metabolic quotient (qCO 2 ), especially with increasing application rate. Compared to compost, the addition of sewage sludge caused higher increases in the values of these parameters. The values of dissolved organic C, fulvic acid C, microbial biomass C, metabolic quotient, and C/N ratio tended to decrease with time. The soil treated with sewage sludge showed a significant increase in the mobile fractions of Zn, Cd, Cu, and Ni and a significant decrease in the mobile fraction of Pb compared to control. The high application rate of compost resulted in the lowest mobility of Cu, Ni, and Pb. The results suggest that biochemical properties of calcareous soil can be enhanced by both organic wastes. But, the high salinity and extractability of heavy metals, due to the addition of sewage sludge, may limit the application of sewage sludge.

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Section: Effect Of Organic Wastes and Incubation Time On Dynamics Of supporting

confidence: 93%

Dynamics of Organic C Mineralization and the Mobile Fraction of Heavy Metals in a Calcareous Soil Incubated with Organic Wastes

Usman

Kuzyakov

Stahr

2004

Water, Air, & Soil Pollution

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“…Amendment of soils with organic matter and subsequent decomposition of organic matter may change the soil pH and thereby indirectly affect the distribution and bioavailability of metals. Studies have shown that addition of peat to pig manure increased soluble metal concentration due to decrease in soil pH (Yuan and LavKulich, 1997;Arnesen and Singh, 1998;Almas et al, 2000). On the contrary, alkaline organic amendments may reduce the concentration of metal ions in soil solution by raising soil pH, thereby allowing formation of insoluble metal precipitates, complexes, and secondary minerals (Knox et al, 2001;Basta et al, 2005).…”

Section: Speciation In Whole Soilmentioning

confidence: 99%

“…Agricultural wastes or by-products have been investigated of their uses as sorbent materials for heavy metals due to the tendency of heavy metals to form stable complexes with organic ligands (Marshall and Champagne, 1995;Almas et al, 2000;Ho, 2003;Shen and Duvnjak, 2005). In fact, plant materials are annually applied to soil in order to improve soil chemical and physical properties.…”

Section: Introductionmentioning

confidence: 99%

Effects of rice straw on the speciation of cadmium (Cd) and copper (Cu) in soils

Cui

Weng

et al. 2008

Geoderma

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“…The significant positive correlation of the micronutrients with OM is due to their release in the soil from the organic matter decomposition. Zinc solubility increases due to the application of OM which forms soluble organo-metallic complexes (Almas et al, 2000). Both extractable Mn and Cu were recorded to be highly significantly positively correlated to the cation exchangeable capacity (CEC) of the soil samples with r values of 0.669**and o.667**, respectively, in the surface samples as well as 0.724** and 0.789**, respectively, in the subsurface ones.…”

Section: Soil Nutrient Index Values (Niv)mentioning

confidence: 98%

Fertility Status and Indices of Micronutrients in Nile Valley Soils, East of the Nile River, Assiut Governorate, Egypt

2017

Egypt.J. Soil Sci.

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All collected soil samples had high nutrient index value (NIV) for both DTPA-Cu and Mn, while they showed medium NIV for DTPA-Zn. On the other hand, both El-Fateh and Sahel Seleem district soils were high NIV of 2.38 and 2.50, respectively, whereas Abnob and ElBadary ones revealed medium NIV of 2.33 and 2.17, respectively for the DTPA-Fe. Significant negative correlations were recorded between the investigated extracted micronutrients and soil pH, EC e and CaCO 3 content, whereas they were positively correlated to OM and CEC.

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Solubility and Lability of Cadmium and Zinc in Two Soils Treated With Organic Matter

Cited by 82 publications

References 30 publications

Dynamics of Organic C Mineralization and the Mobile Fraction of Heavy Metals in a Calcareous Soil Incubated with Organic Wastes

Dynamics of Organic C Mineralization and the Mobile Fraction of Heavy Metals in a Calcareous Soil Incubated with Organic Wastes

Effects of rice straw on the speciation of cadmium (Cd) and copper (Cu) in soils

Fertility Status and Indices of Micronutrients in Nile Valley Soils, East of the Nile River, Assiut Governorate, Egypt

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