VERMICULITIZATION OF MICACEOUS MINERALS AS AFFECTED BY THE RATE OF K UPTAKE BY ALFALFA

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NOROUZI S.; KHADEMI H.

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Journal: Agricultural Engineering Year:2011 | Volume:33 | Issue:2 Page(s): 39-53

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Title

VERMICULITIZATION OF MICACEOUS MINERALS AS AFFECTED BY THE RATE OF K UPTAKE BY ALFALFA

Author(s)

NOROUZI S. | KHADEMI H. | Issue Writer Certificate

Keywords

MICACEOUSMINERALSQ3

POTASSIUMRELEASEQ3

VERMICULITIZATIONQ3

BIOLOGICAL WEATHERINGQ3

Abstract

Potassium (K) trapped between interlayers of clay minerals is an important source of K for plants in many soils. The rhizosphere of plants, particularly the organic acids secreted from roots, can release K from micaceous minerals and also cause their transformation. The objective of this study was to investigate the intensity of micaceous minerals transformation in the rhizosphere of alfalfa. An experiment was carried out under the greenhouse conditions. Alfalfa was grown in pots that consisted of a mixture of quartz sand and biotite or muscovite or phlogopite for a period of 90 days. The plants were irrigated with distilled water and complete or K-free nutrient solutions. After 90 days, K uptake by plants was measured. Also, the clay size particles in each pot were analyzed using x-ray diffraction. Results showed that alfalfa was able to transform part of both biotite and phlogopite to vermiculite by releasing their potassium. VERMICULITIZATION intensity, based on the comparison of 1.45 to 1.0 nm peak intensity ratio, indicated that the rate of transformation very much depends on the quantity of K uptake by plants. No X-ray detectable transformation of muscovite was recognized.

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References

MINERALOGICAL CHANGES IN CLAY-SIZED PHLOGOPITE AND MUSCOVITE AS AFFECTED BY ENDOPHYTE FUNGI-TALL FESCUE SYMBIOSIS

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APA: Copy

NOROUZI, S., & KHADEMI, H.. (2011). VERMICULITIZATION OF MICACEOUS MINERALS AS AFFECTED BY THE RATE OF K UPTAKE BY ALFALFA. AGRICULTURAL ENGINEERING (SCIENTIFIC JOURNAL OF AGRICULTURE), 33(2), 39-53. SID. https://sid.ir/paper/233729/en

Vancouver: Copy

NOROUZI S., KHADEMI H.. VERMICULITIZATION OF MICACEOUS MINERALS AS AFFECTED BY THE RATE OF K UPTAKE BY ALFALFA. AGRICULTURAL ENGINEERING (SCIENTIFIC JOURNAL OF AGRICULTURE)[Internet]. 2011;33(2):39-53. Available from: https://sid.ir/paper/233729/en

IEEE: Copy

S. NOROUZI, and H. KHADEMI, “VERMICULITIZATION OF MICACEOUS MINERALS AS AFFECTED BY THE RATE OF K UPTAKE BY ALFALFA,” AGRICULTURAL ENGINEERING (SCIENTIFIC JOURNAL OF AGRICULTURE), vol. 33, no. 2, pp. 39–53, 2011, [Online]. Available: https://sid.ir/paper/233729/en

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