THE EFFECT POTASSIUM FERTILIZER ON THE SOIL SOLUTION AND EXCHANGEABLE POTASSIUM

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JALALI M.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Iranian Journal of Soil Research Year:2002 | Volume:16 | Issue:1 Page(s): 0-0

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Title

THE EFFECT POTASSIUM FERTILIZER ON THE SOIL SOLUTION AND EXCHANGEABLE POTASSIUM

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JALALI M. | Issue Writer Certificate

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Abstract

Limited information is available on the application of potassium fertilizer in arid and semi-arid soils, because these soils are generally well supplied with plant available potassium. But, soils that have been intensively cropped are becoming depleted in plant available potassium. The objectives of this study were to (i) investigate the effect of potassium fertilizer on the changes in solution and exchangeable potassium and (ii) determine if any of the changes can be attributed to the some physical and chemical property of the soil. Fifteen surface soils were equilibrated at field capacity for three weeks after additions of 0, 21, 42, 104, 208, 415, and 1245 mg K kg-1 of soil. Solution potassium was linearly increased with potassium addition. Also a linear increase in exchangeable potassium with potassium addition was observed. The value of slope representing the proportion of added potassium displaced from exchange sites with ammonium acetate varied from 0.55 to 1.03. Values larger than 1 indicates more exchangeable potassium was displaced from the soil than had been added, whereas values less than 1 shows some fraction of added potassium was fixed into forms that were not extractable with ammonium acetate. The coefficients describing the relation of both solution and exchangeable potassium were not correlated with any of the measured soil properties.

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APA: Copy

JALALI, M.. (2002). THE EFFECT POTASSIUM FERTILIZER ON THE SOIL SOLUTION AND EXCHANGEABLE POTASSIUM . IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, 16(1), 0-0. SID. https://sid.ir/paper/360685/en

Vancouver: Copy

JALALI M.. THE EFFECT POTASSIUM FERTILIZER ON THE SOIL SOLUTION AND EXCHANGEABLE POTASSIUM . IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES[Internet]. 2002;16(1):0-0. Available from: https://sid.ir/paper/360685/en

IEEE: Copy

M. JALALI, “THE EFFECT POTASSIUM FERTILIZER ON THE SOIL SOLUTION AND EXCHANGEABLE POTASSIUM ,” IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, vol. 16, no. 1, pp. 0–0, 2002, [Online]. Available: https://sid.ir/paper/360685/en

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