Zinc Availability in Calcareous Soils: Iii. The Level and Properties of Calcium in Soils and Its Influence on Zinc Availability

Navrot, J.; Ravikovitch, S.

doi:10.1097/00010694-196907000-00004

Cited by 19 publications

(8 citation statements)

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“…The mean concentration of Cu-F 2 fraction was also higher under field capacity in acidic soil compared to flooding, while the reverse was true for the neutral and alkaline soils. Considerable adsorption of metal onto soil carbonates in non-flooded soil might decrease metal availability (Navrot and Ravikovitch 1969). The content of Cu-F 2 in all soils also declined significantly with increasing incubation time.…”

Section: Naoac Extractable (Cu-f 2 ) Fractionmentioning

confidence: 91%

Chemical transformation of copper in some sludge-amended soils

Tewari¹,

Tewari

Srivastava

et al. 2009

Archives of Agronomy and Soil Science

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In a laboratory incubation study, the periodic changes in different chemical fractions of copper (Cu) in three sludge-amended soil types (acidic sandy clay loam, neutral clay loam and alkaline clay loam) of varying soil reaction were monitored under field capacity and flooding moisture regime over 16 months. The water soluble and exchangeable fraction of Cu was very low (1% of total Cu) in all three soil types. At the end of incubation (16 months), the sodium acetate extractable (carbonate sorbed)-and residual-Cu fractions transformed into Fe-Mn oxide fraction, irrespective of moisture regime in all three soil types. However, the extent of transformation varied among soils.

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Section: Naoac Extractable (Cu-f 2 ) Fractionmentioning

confidence: 91%

Chemical transformation of copper in some sludge-amended soils

Tewari¹,

Tewari

Srivastava

et al. 2009

Archives of Agronomy and Soil Science

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“…The mean concentration of F 2 -Ni fraction was higher under the field capacity moisture regime compared with flooding moisture regime, especially in acidic soil. Metal availability in non-flooded soil may be reduced greatly by the adsorption of metal on to carbonates (Navrot and Ravikovitch, 1969). Irrespective of the soil type, soils where Ni was added as sludge, maintained higher mean concentration of F 2 -Ni fraction than where Ni was added as inorganic salt, possibly due to presence of soluble organic matter in sludge itself.…”

Section: Transformation Of Added Nimentioning

confidence: 99%

Nickel chemical transformation in polluted soils as affected by metal source and moisture regime

Tewari

Tewari²,

Srivastava

et al. 2010

Chemical Speciation & Bioavailability

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“…In the latter case, the amounts of Zn applied (equal to the Langmuir sorption maxima) were 3448, 3846, 4132, 6173, 6250, 4201, 7143, and 7692 mg Zn kg" 1 for soils 1 to 8, respectively. It is assumed that Zn is found in calcareous soils as smithsonite (ZnCO 3 ) and hydrozincite [2ZnCO 3 .3Zn(OH) 2 ] (Navrot and Ravikovitch 1969). These compounds can appear as precipitates or as coatings on the carbonate particle surface.…”

Section: Influence Of State Of^zn Application and Incubation Periods mentioning

confidence: 99%

“…Such information is potentially valuable in predicting metal availability to plants, leaching rates, and transformations between chemical forms in agricultural and polluted soils (McBride 1981). Zinc is one of the micronutrients often limiting crop production and most commonly deficient in calcareous soils (Navrot and Ravikovitch 1969;Navrot and Gal 1971). Both native and applied zinc react with the inorganic and organic phases in the soil and thereby affect its availability (Murthy 1982).…”

Section: Introductionmentioning

confidence: 99%

Fate of zinc applied to calcareous soils using Zn‐65 as a tracer: I. Fractionation with time

Fahad¹

1988

Arid Soil Research and Rehabilitation

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Fractionation of zinc was studied in eight alluvial calcareous soils representing a wide range of physical and chemical properties. 65 Zinc was applied as a carrier-free and carrier to soil samples incubated for 1, 15, and 30 d. Results indicated that for the one-day incubation of the sandy loam soil, the amounts of Zn associated with CaCO 3 were 60 percent in the carrier-free treatment increased to 90 percent in the carrier treatment. Comparable values were obtained for the other soils studied of different properties suggesting the importance of CaCO 3 in retaining the majority of trace application of Zn and the limited capacity of soil constituents other than the CaCO 3 in retaining Zn in the macro application. Clay minerals appeared as second important soil constituents in Zn retention. Its importance increased when Zn was applied in trace amounts. Diffusion of Zn continued during the incubation periods mainly by fixation by clay minerals and resulted in the reduction of Zn associated with soil CaCO 3 .

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Zinc Availability in Calcareous Soils: Iii. The Level and Properties of Calcium in Soils and Its Influence on Zinc Availability

Cited by 19 publications

References 0 publications

Chemical transformation of copper in some sludge-amended soils

Chemical transformation of copper in some sludge-amended soils

Nickel chemical transformation in polluted soils as affected by metal source and moisture regime

Fate of zinc applied to calcareous soils using Zn‐65 as a tracer: I. Fractionation with time

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