COMPETITION BETWEEN POTASSIUM AND AMMONIUM FIXATION BY SOILS WITH DIFFERENT CULTIVATION SYSTEMS

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PISHGIR M.; JAFARI S.; GHANIAN M.

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Journal: Iranian Journal of Soil Research Year:2017 | Volume:31 | Issue:1 Page(s): 131-142

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Title

COMPETITION BETWEEN POTASSIUM AND AMMONIUM FIXATION BY SOILS WITH DIFFERENT CULTIVATION SYSTEMS

Author(s)

PISHGIR M. | JAFARI S. | GHANIAN M. | Issue Writer Certificate

Keywords

ROTATIONQ3

KHUZESTANQ2

CLAY MINERALSQ2

ORGANIC MATTERQ2

Abstract

Competition between potassium and ammonium fixation was studied in some soils of the northern and southern KHUZESTAN province. Samples were taken from 0-30 and 30-60 cm depths in cultivation systems such as sugarcane, ROTATIONal cropping, date palm, and uncultivated lands. Then, 0, 50, 100, 200, 400, 600, 800, 1000 mg kg-1 concentrations of potassium and ammonium were added to these soil samples. The statistical analysis showed that with increasing concentrations from zero to 1000 mg kg-1 potassium and ammonium for all treatments, potassium and ammonium fixation increased in all systems and depths. In cultivated system, ammonium was fixed from 2007.50 to 1952.08 mg kg-1 in the surface and subsurface layers, respectively, while uncultivated land fixed 1880.62 to 1941.87 mg kg-1 ammonium. In contrast to ammonium, the same trend was not observed for potassium. Ammonium has also more tendency to fixing than potassium due to the presence of smectites and depleted illite CLAY MINERALS in these regions. The correlation coefficients between physicochemical properties and fixation showed that ORGANIC MATTER and clay content had negative effect on these cation fixations, but these effects were not statistically significant. Also, soil pH, the amount of lime and sand had insignificant and negative effect on ammonium fixation -0.034, -0.029 and -0.021 and cation exchange capacity and silt percentage show negative effect that was insignificant at -0.068 and -0.017, respectively.

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APA: Copy

PISHGIR, M., JAFARI, S., & GHANIAN, M.. (2017). COMPETITION BETWEEN POTASSIUM AND AMMONIUM FIXATION BY SOILS WITH DIFFERENT CULTIVATION SYSTEMS. IRANIAN JOURNAL OF SOIL RESEARCH (FORMERLY SOIL AND WATER SCIENCES), 31(1 ), 131-142. SID. https://sid.ir/paper/158898/en

Vancouver: Copy

PISHGIR M., JAFARI S., GHANIAN M.. COMPETITION BETWEEN POTASSIUM AND AMMONIUM FIXATION BY SOILS WITH DIFFERENT CULTIVATION SYSTEMS. IRANIAN JOURNAL OF SOIL RESEARCH (FORMERLY SOIL AND WATER SCIENCES)[Internet]. 2017;31(1 ):131-142. Available from: https://sid.ir/paper/158898/en

IEEE: Copy

M. PISHGIR, S. JAFARI, and M. GHANIAN, “COMPETITION BETWEEN POTASSIUM AND AMMONIUM FIXATION BY SOILS WITH DIFFERENT CULTIVATION SYSTEMS,” IRANIAN JOURNAL OF SOIL RESEARCH (FORMERLY SOIL AND WATER SCIENCES), vol. 31, no. 1 , pp. 131–142, 2017, [Online]. Available: https://sid.ir/paper/158898/en

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