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 to two systems including; system 1; soil-water-metal, system 2; soil-water-organic acid-metal). Data fitted to different adsorption/desorption isotherms model including Langmuir (Cs= kbCe/ 1+kCe) and Frundlich (Cs=kCe1/n) and appropriate model 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, P0.94, Poxalic acid>malic acid>control, respectively. It can be concluded that complexing organic acids with Fe decrease its adsorption and promote availability for plant.
Rasouli-Sadaghiani, M., Dareghayedi, B., Khodaverdiloo, H., & Moradi, N. (2015). Effect of organic acids on sorption and immobilization of Fe in acidic and calcareous soils. Journal of Soil Management and Sustainable Production, 5(1), 215-228.
MLA
MirHassan Rasouli-Sadaghiani; Behnaz Dareghayedi; Habib Khodaverdiloo; Neda Moradi. "Effect of organic acids on sorption and immobilization of Fe in acidic and calcareous soils". Journal of Soil Management and Sustainable Production, 5, 1, 2015, 215-228.
HARVARD
Rasouli-Sadaghiani, M., Dareghayedi, B., Khodaverdiloo, H., Moradi, N. (2015). 'Effect of organic acids on sorption and immobilization of Fe in acidic and calcareous soils', Journal of Soil Management and Sustainable Production, 5(1), pp. 215-228.
VANCOUVER
Rasouli-Sadaghiani, M., Dareghayedi, B., Khodaverdiloo, H., Moradi, N. Effect of organic acids on sorption and immobilization of Fe in acidic and calcareous soils. Journal of Soil Management and Sustainable Production, 2015; 5(1): 215-228.
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