EFFECT OF PHOSPHATE AMENDMENTS ON THE REDUCTION OF LEAD PHYTOAVAILABILITY FOR SPINACH IN A CALCAREOUS SOIL

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IMANI T.; BARANIMOTLAGH M.; BOSTANI A.A.; KHORMALI F.

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Journal: Journal of Soil Management and Sustainable Production Year:2014 | Volume:4 | Issue:2 Page(s): 151-167

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Title

EFFECT OF PHOSPHATE AMENDMENTS ON THE REDUCTION OF LEAD PHYTOAVAILABILITY FOR SPINACH IN A CALCAREOUS SOIL

Author(s)

IMANI T. | BARANIMOTLAGH M. | BOSTANI A.A. | KHORMALI F. | Issue Writer Certificate

Keywords

IN SITU IMMOBILIZATIONQ2

PHOSPHOROUSQ2

PYROMORPHITE MINERALQ2

SEQUENTIAL EXTRACTIONQ2

Abstract

In order to reduce Pb phytoavailability for spinach (Spinacia oleracea L.) using P amendment, (DAP, TSP 1: 1 ratio acid phosphoric and phosphate rock), a factorial experiment based on completely randomized design was conducted and analyzed 100 days after the P applications using a SEQUENTIAL EXTRACTION method.Sequential extraction analysis indicates that P was effective in transforming soil Pb from non-residual fractions (SS, SE, CA, Fe-Mn form and Pb in OM) to a residual fraction. Results revealed that DTPA extractable Pb was reduced in treated soils, however, among these three treatments, DAP at 9 molar ratio of P/Pb was the most effective. Results of greenhouse experiments showed that the amount of lead in aerial parts of spinach had the highest lead in 1: 1 ratio of acid phosphoric and phosphat rock and the DAP had the lowest. In DAP treatment, the Pb concentrations in shoots of spinach decreased 72% as compared with the control treatment. The results suggested that P amendments especially DAP can lower the bioavailability and increase the geochemical stability of soil Pb, so it has the potential for in situ remediation in Pb-contaminated soils.

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APA: Copy

IMANI, T., BARANIMOTLAGH, M., BOSTANI, A.A., & KHORMALI, F.. (2014). EFFECT OF PHOSPHATE AMENDMENTS ON THE REDUCTION OF LEAD PHYTOAVAILABILITY FOR SPINACH IN A CALCAREOUS SOIL. ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, 4(2), 151-167. SID. https://sid.ir/paper/209728/en

Vancouver: Copy

IMANI T., BARANIMOTLAGH M., BOSTANI A.A., KHORMALI F.. EFFECT OF PHOSPHATE AMENDMENTS ON THE REDUCTION OF LEAD PHYTOAVAILABILITY FOR SPINACH IN A CALCAREOUS SOIL. ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION[Internet]. 2014;4(2):151-167. Available from: https://sid.ir/paper/209728/en

IEEE: Copy

T. IMANI, M. BARANIMOTLAGH, A.A. BOSTANI, and F. KHORMALI, “EFFECT OF PHOSPHATE AMENDMENTS ON THE REDUCTION OF LEAD PHYTOAVAILABILITY FOR SPINACH IN A CALCAREOUS SOIL,” ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, vol. 4, no. 2, pp. 151–167, 2014, [Online]. Available: https://sid.ir/paper/209728/en

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