KINETICS OF NONEXCHANGEABLE POTASSIUM RELEASE THROUGH MALIC ACID AND SUPPLYING POWER OF SOME SOILS OF HAMADAN PROVINCE

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ZARABI M.M.; JALALI MOHSEN; MAHDAVI HAJILOUEI SH.

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Journal: IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE) Year:2007 | Volume:37 | Issue:6 Page(s): 951-964

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Title

KINETICS OF NONEXCHANGEABLE POTASSIUM RELEASE THROUGH MALIC ACID AND SUPPLYING POWER OF SOME SOILS OF HAMADAN PROVINCE

Author(s)

ZARABI M.M. | JALALI MOHSEN | MAHDAVI HAJILOUEI SH. | Issue Writer Certificate

Keywords

KINETICSQ3

NONEXCHANGEABLE POTASSIUMQ3

RELEASEQ3

MALIC ACIDQ2

KINETIC EQUATIONSQ3

Abstract

The RELEASE rate of NONEXCHANGEABLE POTASSIUM plays an important role in supplying available potassium, particularly in soils containing K-bearing minerals. The objective of this study was to investigate the RELEASE of NONEXCHANGEABLE POTASSIUM in ten soil series In Hamedan province. Greenhouse and laboratory experiments were conducted to study the effect of MALIC ACID on RELEASE of K from Ca- saturated soil samples (<2mm) using 0,01 M MALIC ACID for 2-2084 hours. Average RELEASEd potassium was 226.7mgkg-1. The no exchangeable potassium RELEASE curves showed an initial rapid phase followed by a slow phase of potassium RELEASE from soils. The KINETICS of nonexchangeable potassiurn RELEASE was evaluated using the zero-order, first-order, second-order, simple Elovich, power function and parabolic diffusion equations. Based on their highest determination coefficient (R2) and lower standard error of the estimate (SE) the power function, first order and parabolic diffusion luations described the data satisfactorily. Due to the conformity of KINETICS data to the parabolic diffusion, power function and first-order equations, it was suggested that the process of K RELEASE from these soils ws affected by diffusion processes. There were not any significant correlations observed between MALIC ACID extractable potassium with NH4OAc and NaOAc exchangeable potassium, wheat yield and total uptake. There were no significant correlations observed between wheat yield and total uptake with slope and intercept of different KINETIC EQUATIONS. Significant correlations were observed between wheat total uptake, and NHtOAc as well as NaOAc exchangeable potassium.

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APA: Copy

ZARABI, M.M., JALALI, MOHSEN, & MAHDAVI HAJILOUEI, SH.. (2007). KINETICS OF NONEXCHANGEABLE POTASSIUM RELEASE THROUGH MALIC ACID AND SUPPLYING POWER OF SOME SOILS OF HAMADAN PROVINCE. IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE), 37(6), 951-964. SID. https://sid.ir/paper/8402/en

Vancouver: Copy

ZARABI M.M., JALALI MOHSEN, MAHDAVI HAJILOUEI SH.. KINETICS OF NONEXCHANGEABLE POTASSIUM RELEASE THROUGH MALIC ACID AND SUPPLYING POWER OF SOME SOILS OF HAMADAN PROVINCE. IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE)[Internet]. 2007;37(6):951-964. Available from: https://sid.ir/paper/8402/en

IEEE: Copy

M.M. ZARABI, MOHSEN JALALI, and SH. MAHDAVI HAJILOUEI, “KINETICS OF NONEXCHANGEABLE POTASSIUM RELEASE THROUGH MALIC ACID AND SUPPLYING POWER OF SOME SOILS OF HAMADAN PROVINCE,” IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE), vol. 37, no. 6, pp. 951–964, 2007, [Online]. Available: https://sid.ir/paper/8402/en

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