POTASSIUM QUANTITY-INTENSITY (Q/I) CURVE AND CORRELATION OF ITS PARAMETERS WITH CHARACTERISTICS OF SELECTED SOILS OF SUGARCANE CULTIVATION IN KHUZESTAN

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BOSTANI A.A.A.; SAVAGHEBI FIROUZABADI GH.R.

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Journal: IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE) Year:2006 | Volume:37 | Issue:3 Page(s): 471-479

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Title

POTASSIUM QUANTITY-INTENSITY (Q/I) CURVE AND CORRELATION OF ITS PARAMETERS WITH CHARACTERISTICS OF SELECTED SOILS OF SUGARCANE CULTIVATION IN KHUZESTAN

Author(s)

BOSTANI A.A.A. | SAVAGHEBI FIROUZABADI GH.R. | Issue Writer Certificate

Keywords

QUANTITYQ3

INTENSITY CURVEQ3

POTASSIUM BUFFERING CAPACITYQ3

Abstract

Potassium is a very important nutrient in sugarcane nutrition, as well as in its QUANTITY and quality of yield. For an evaluation of soil potassium availability and fertilization management, QUANTITY-Intensity (Q/I) curves are useful. This study was conducted to obtain such Q/I parameters as readily exchangeable potassium (DK0), slowly exchangeable potassium (Kx), potassium activity ratio (ARK)and potassium potential buffering capacity (PBCK)as well as correlations between these parameters and physical& chemical charactristics in 0-30 cm samples of soil under sugarcane cultivation in Khuzestan Province of Iran. The results indicated that DK0 ranged from 0.0353 to 0.2257 with an average of 0.0835 meq 100g-1, Kx from 1.063 to 4.143 with an average of 2.325 me 100g-1, AR0 ranging from 0.0125 to 0.0941 with an average of 0.040 (mmol L-1) 05, and finally PBCK ranging from 1.2034 to 3.0651 with an average of 2.232 (mmoil -1)05/( meq 100g-1). The Q/I curves followed the common shapes observed in literature but varied in different soils. Correlations between PBCK and clay percentage (r=0.83**), CEC (r=0.81**), and exchangeable potassium (r=0.62*) were significant but between cultivation history, and soluble potassium, and pH were not significant. The results also indicated that long-term cultivation caused the available potassium to decrease but it had no effect on unavailable potassium.

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APA: Copy

BOSTANI, A.A.A., & SAVAGHEBI FIROUZABADI, GH.R.. (2006). POTASSIUM QUANTITY-INTENSITY (Q/I) CURVE AND CORRELATION OF ITS PARAMETERS WITH CHARACTERISTICS OF SELECTED SOILS OF SUGARCANE CULTIVATION IN KHUZESTAN. IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE), 37(3), 471-479. SID. https://sid.ir/paper/8333/en

Vancouver: Copy

BOSTANI A.A.A., SAVAGHEBI FIROUZABADI GH.R.. POTASSIUM QUANTITY-INTENSITY (Q/I) CURVE AND CORRELATION OF ITS PARAMETERS WITH CHARACTERISTICS OF SELECTED SOILS OF SUGARCANE CULTIVATION IN KHUZESTAN. IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE)[Internet]. 2006;37(3):471-479. Available from: https://sid.ir/paper/8333/en

IEEE: Copy

A.A.A. BOSTANI, and GH.R. SAVAGHEBI FIROUZABADI, “POTASSIUM QUANTITY-INTENSITY (Q/I) CURVE AND CORRELATION OF ITS PARAMETERS WITH CHARACTERISTICS OF SELECTED SOILS OF SUGARCANE CULTIVATION IN KHUZESTAN,” IRANIAN JOURNAL OF AGRICULTURAL SCIENCES (JOURNAL OF AGRICULTURE), vol. 37, no. 3, pp. 471–479, 2006, [Online]. Available: https://sid.ir/paper/8333/en

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