AVAILABILITY AND RELEASE KINETICS OF NONEXCHANGEABLE POTASSIUM IN SOME CALCAREOUS SOILS OF FARS PROVINCE

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ABDI S.; GHASEMI FASAEI R.; KARIMIAN N.A.; FEIZIAN M.

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Journal: Journal of Water and Soil Year:2014 | Volume:28 | Issue:4 Page(s): 766-777

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Title

AVAILABILITY AND RELEASE KINETICS OF NONEXCHANGEABLE POTASSIUM IN SOME CALCAREOUS SOILS OF FARS PROVINCE

Author(s)

ABDI S. | GHASEMI FASAEI R. | KARIMIAN N.A. | FEIZIAN M. | Issue Writer Certificate

Keywords

CORNQ2

EXTRACTANTQ2

CALCIUM CHLORIDEQ2

Abstract

Sum of exchangeable and solution forms of soil potassium is widely used to determine potassium availability for plants. Reliability of these methods is not enough in soils that contain 2: 1 phyllosilicates. Additional toexchangeable potassium, nonexchamgeable potassium also has an important role in plant nutrition. Limitedin formation about availability and release kinetics of nonexchangeable potassium in calcareous soils of Farsprovince is available. For this purpose, some EXTRACTANTs including ammonium acetate, boiling nitric acid, 0.1 Mnitric acid, 2M sodium chloride and water were evaluated to prediction of potassium availability for CORN in 10calcareous soils of Fars province. Release kinetics of nonexchangeable potassium was studied using 15successive 15-min extraction with 0.01M CALCIUM CHLORIDE. Kinetics models describing nonexchangeable potassium release rate including zero order, first order, second order, third order, parabolic diffusion, power function and ellovich were evaluated. Results showed that 1M neutral amonium acetate, 0.1M aitric acid, water and 2M sodium chloride EXTRACTANTs had high correlation with CORN potassium uptake. Amount of potassium released among studied soils was vary in the range of 243 to 814 mg kg-1. According to R2 and SE, kinetics of nonexchangeable potassium release was described with power function, parabolic diffusion and elloviche quations satisfactorily. According to this fact that constant rate of parabolic diffusion and ellovich models had significant correlations with CORN potassium uptake, it is recommended that these two models are suitable for usein these studied soils.

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APA: Copy

ABDI, S., GHASEMI FASAEI, R., KARIMIAN, N.A., & FEIZIAN, M.. (2014). AVAILABILITY AND RELEASE KINETICS OF NONEXCHANGEABLE POTASSIUM IN SOME CALCAREOUS SOILS OF FARS PROVINCE. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 28(4), 766-777. SID. https://sid.ir/paper/141224/en

Vancouver: Copy

ABDI S., GHASEMI FASAEI R., KARIMIAN N.A., FEIZIAN M.. AVAILABILITY AND RELEASE KINETICS OF NONEXCHANGEABLE POTASSIUM IN SOME CALCAREOUS SOILS OF FARS PROVINCE. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2014;28(4):766-777. Available from: https://sid.ir/paper/141224/en

IEEE: Copy

S. ABDI, R. GHASEMI FASAEI, N.A. KARIMIAN, and M. FEIZIAN, “AVAILABILITY AND RELEASE KINETICS OF NONEXCHANGEABLE POTASSIUM IN SOME CALCAREOUS SOILS OF FARS PROVINCE,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 28, no. 4, pp. 766–777, 2014, [Online]. Available: https://sid.ir/paper/141224/en

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