THE STUDYING Q/I PARAMETERS OF POTASSIUM IN THE CALCAREOUS SOILS OF ARID AND SEMI ARID REGIONS IN ISFAHAN AND CHAHARMAHAL-VA-BAKHTIARI PROVINCES

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BAHMANI M.; SALEHI M.H.; HOSSEINPOOR A.

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Journal: Journal of Water and Soil Year:2012 | Volume:26 | Issue:2 Page(s): 349-360

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Title

THE STUDYING Q/I PARAMETERS OF POTASSIUM IN THE CALCAREOUS SOILS OF ARID AND SEMI ARID REGIONS IN ISFAHAN AND CHAHARMAHAL-VA-BAKHTIARI PROVINCES

Author(s)

BAHMANI M. | SALEHI M.H. | HOSSEINPOOR A. | Issue Writer Certificate

Keywords

POTASSIUMQ2

QUANTITY-INTENSITY CURVESQ1

POTENTIAL BUFFERING CAPACITY OF POTASSIUMQ2

Abstract

Quantity-Intensity (Q/I) curves of POTASSIUM and their derived parameters provide general information about soil K availability and fertilizers management. This study was conducted to compare the Q/I parameters in soils of Mobarakeh and Shahrekord plains in Isfahan and Chaharmahal-va-Bakhtiari Provinces, respectively. The Q/I plots showed the common forms described in the literature but high variations were observed in the soils with respect to Q/I parameters. Results showed the following Q/I parameters for the surface soils (A horizon) of Mobarakeh and Shahrekord plains, respectively: the POTASSIUM activity ratio at equilibrium (AR0): 0.0278 to 0.1067 and 0.0174 to 0.0811 (mmol.l-1)0.5, the immediate available K (DK0): 0.728 to 2.62 and 0.56 to 4.05 mmolkg-1, the difficulty available K (KX): 1.57 to 1.71 and 3.69 to 5.25 mmol.Kg-1 and the potential buffering capacity (PBCK): 13.6 to 26.27 and 30.97 to 49.96 mmol.kg-1/ (mmol.L-1)0.5. Correlation coefficients showed a significant difference (r=0.86) between PBCK and CEC for Mobarakeh soils whereas no significant difference was observed for Shahrekord soils. A significant difference was also observed among AR0, K0 and exchangeable POTASSIUM for both of the soils studied.

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APA: Copy

BAHMANI, M., SALEHI, M.H., & HOSSEINPOOR, A.. (2012). THE STUDYING Q/I PARAMETERS OF POTASSIUM IN THE CALCAREOUS SOILS OF ARID AND SEMI ARID REGIONS IN ISFAHAN AND CHAHARMAHAL-VA-BAKHTIARI PROVINCES. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 26(2), 349-360. SID. https://sid.ir/paper/141333/en

Vancouver: Copy

BAHMANI M., SALEHI M.H., HOSSEINPOOR A.. THE STUDYING Q/I PARAMETERS OF POTASSIUM IN THE CALCAREOUS SOILS OF ARID AND SEMI ARID REGIONS IN ISFAHAN AND CHAHARMAHAL-VA-BAKHTIARI PROVINCES. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2012;26(2):349-360. Available from: https://sid.ir/paper/141333/en

IEEE: Copy

M. BAHMANI, M.H. SALEHI, and A. HOSSEINPOOR, “THE STUDYING Q/I PARAMETERS OF POTASSIUM IN THE CALCAREOUS SOILS OF ARID AND SEMI ARID REGIONS IN ISFAHAN AND CHAHARMAHAL-VA-BAKHTIARI PROVINCES,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 26, no. 2, pp. 349–360, 2012, [Online]. Available: https://sid.ir/paper/141333/en

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