EFFECT OF ORGANIC ACIDS ON SORPTION AND IMMOBILIZATION OF FE IN ACIDIC AND CALCAREOUS SOILS

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RASOULI SADAGHIANI M.H.; DAREGHAYEDI B.; KHODAVERDILOO H.; MORADI N.

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Journal: Journal of Soil Management and Sustainable Production Year:2015 | Volume:5 | Issue:1 Page(s): 215-228

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Title

EFFECT OF ORGANIC ACIDS ON SORPTION AND IMMOBILIZATION OF FE IN ACIDIC AND CALCAREOUS SOILS

Author(s)

RASOULI SADAGHIANI M.H. | DAREGHAYEDI B. | KHODAVERDILOO H. | MORADI N. | Issue Writer Certificate

Keywords

IRONQ1

SORPTIONQ2

IMMOBILIZATIONQ1

ORGANIC ACIDSQ2

CALCAREOUS AND ACIDIC SOILSQ2

Abstract

Organic acids exuded by plant roots increase solubility of soil micronutrient complexes. This study was carried out to evaluate adsorption isotherms of 4 acidic and 4 calcareous soils at presence of ORGANIC ACIDS (citric, malic and oxalic acids). IRON SORPTION and desorption isotherms are defined in two systems including; 1; soil-water-metal, 2; soil-water-organic acid-metal. Data fitted to different adsorption/desorption isotherm models including Langmuir (Cs=kbCe/ 1+kCe) and Frundlich (Cs=kCe1/n) and appropriate model was developed for quantitative behavior of IRON adsorption/desorption. The results showed that in acidic soils, Fe adsorption data fitted well with Frundlich (R2>0.98, P<0.001) and in calcareous soils, data were fitted with both equation (R2>0.94, P<0.001). Paired comparisons test showed that presence of ORGANIC ACIDS had a significant effect on IRON adsorption, in which the citric acid significantly decreased in 71 percent of maximum absorption in soils. In both acidic and calcareous soils presence of ORGANIC ACIDS caused reduction in unmoved IRON. ORGANIC ACIDS effectiveness sequence in unmoved IRON in acidic and calcareous soils was citric acid>oxalic acid>malic acid>control, respectively. It can be concluded that complexing ORGANIC ACIDS with Fe decrease its adsorption and promote its availability for plant.

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APA: Copy

RASOULI SADAGHIANI, M.H., DAREGHAYEDI, B., KHODAVERDILOO, H., & MORADI, N.. (2015). EFFECT OF ORGANIC ACIDS ON SORPTION AND IMMOBILIZATION OF FE IN ACIDIC AND CALCAREOUS SOILS. ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, 5(1), 215-228. SID. https://sid.ir/paper/209915/en

Vancouver: Copy

RASOULI SADAGHIANI M.H., DAREGHAYEDI B., KHODAVERDILOO H., MORADI N.. EFFECT OF ORGANIC ACIDS ON SORPTION AND IMMOBILIZATION OF FE IN ACIDIC AND CALCAREOUS SOILS. ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION[Internet]. 2015;5(1):215-228. Available from: https://sid.ir/paper/209915/en

IEEE: Copy

M.H. RASOULI SADAGHIANI, B. DAREGHAYEDI, H. KHODAVERDILOO, and N. MORADI, “EFFECT OF ORGANIC ACIDS ON SORPTION AND IMMOBILIZATION OF FE IN ACIDIC AND CALCAREOUS SOILS,” ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION, vol. 5, no. 1, pp. 215–228, 2015, [Online]. Available: https://sid.ir/paper/209915/en

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