Origin and Clay Minerals Characteristics and their Relationship with Potassium Forms in the Calcareous Soils of Kakan Plain in East of Kohgilouye-va-Boyerahmad Province

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SHAKERI S.; Abtahi S. A.

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Journal: JOURNAL OF WATER AND SOIL SCIENCE Year:2019 | Volume:22 | Issue:4 Page(s): 173-188

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Title

Origin and Clay Minerals Characteristics and their Relationship with Potassium Forms in the Calcareous Soils of Kakan Plain in East of Kohgilouye-va-Boyerahmad Province

Author(s)

SHAKERI S. | Abtahi S. A. | Issue Writer Certificate

Keywords

Clay mineralsQ2

Potassium formsQ1

Calcium carbonateQ2

KakanQ1

Abstract

This research was carried out to assess the origin and clay minerals characteristics and their relationship with potassium forms in the calcareous soil of this region, with the humid climate conditions. Based on aerial photos and topographic maps, physiographic units were separated and soil sampling was done in each diagnostic horizon. The results showed that smectite was the main and dominant clay mineral in the study area. In well-drained pedons, the convincing process for smectite abundance seemed to be mainly the transformation of palygorskite and mica. According to the results, the exchangeable potassium in the surface horizon was higher than that of the subsurface horizons. The main reason for the higher level of exchangeable K in the soil surface, was more smectite and organic carbon. The results revealed that unlike exchangeable and non-exchangeable K, because of the suitable conditions like temperature and humidity in surface horizons, the relative mean of structural K in the surface soils was less than that in the subsurface. Also, since an increase in calcium carbonate resulted in a decrease in amount of clay and the amount of relative clay minerals (dilution effect), the amounts of exchangeable, non-exchangeable and structural K were decreased.

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APA: Copy

SHAKERI, S., & Abtahi, S. A.. (2019). Origin and Clay Minerals Characteristics and their Relationship with Potassium Forms in the Calcareous Soils of Kakan Plain in East of Kohgilouye-va-Boyerahmad Province. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 22(4 ), 173-188. SID. https://sid.ir/paper/394971/en

Vancouver: Copy

SHAKERI S., Abtahi S. A.. Origin and Clay Minerals Characteristics and their Relationship with Potassium Forms in the Calcareous Soils of Kakan Plain in East of Kohgilouye-va-Boyerahmad Province. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2019;22(4 ):173-188. Available from: https://sid.ir/paper/394971/en

IEEE: Copy

S. SHAKERI, and S. A. Abtahi, “Origin and Clay Minerals Characteristics and their Relationship with Potassium Forms in the Calcareous Soils of Kakan Plain in East of Kohgilouye-va-Boyerahmad Province,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 22, no. 4 , pp. 173–188, 2019, [Online]. Available: https://sid.ir/paper/394971/en

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