CORRELATION OF Q/I PARAMETERS WITH SOME SOIL PROPERTIES AND POTASSIUM UPTAKE BY WHEAT IN SOME SOILS OF ABYAK REGION

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GHANAVATI N.; MALAKOUTI MOHAMMAD JAFAR; HOSSEINPOUR A.R.

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Journal: Journal of Water and Soil Science Year:2009 | Volume:13 | Issue:49 Page(s): 167-177

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Title

CORRELATION OF Q/I PARAMETERS WITH SOME SOIL PROPERTIES AND POTASSIUM UPTAKE BY WHEAT IN SOME SOILS OF ABYAK REGION

Author(s)

GHANAVATI N. | MALAKOUTI MOHAMMAD JAFAR | HOSSEINPOUR A.R. | Issue Writer Certificate

Keywords

WHEAT (TRITICUM AESTIVUM L.)Q3

QUANTITY-INTENSITY (Q/I)Q3

POTENTIAL BUFFERING CAPACITYQ2

ABSORBED POTASSIUMQ3

YIELDQ2

Abstract

Correlation between components of Q/I and wheat (Triticum aestivum L.) growth indices was studied in a greenhouse experiment during 2003-04 growing season. Eighty soil samples (0 – 30 cm depth) were collected randomly in farms around the Abyak region, Ghazvin province. Twenty-one samples were then selected based on soil texture and NH4OAC-K. The research included treatments of 21 soils and two potassium (K) levels (0, 100 mg/kg) and was conducted in a factorial manner in a randomized complete block design with three replications for studying correlations between Q/I and treatments. Effect of potassium application on the wheat growth was found to be significant at 5% level. The effect of soil properties on wheat growth was also found to be significant at 1% level. However, the interaction of K and soil was not significant. There were no significant differences among the different equilibrium time intervals. The soil potassium buffering capacity (PBCK) values were strongly correlated with CEC (r =0.996**), clay content (r=0.921**) and moisture saturation percentage (r = 0.811**). Final equation derived from stepwise regression for prediction of PBCK was as follows: PBCK = 7.419 CEC –19.743 R2adj=0.782** The equilibrium potassium activity ratios (ARke) were strongly correlated with soluble potassium (r=0.846**), NH4OAC-K (r=0.730**), SP (r=0/794*), OC (r=-0.477ns) and clay content (r=-0.602*). Similarly, readily exchangeable potassium (ΔK0) was strongly correlated with ammonium acetate extractable potassium (r=0.871**), soluble potassium (r = 0.778**), saturation percentage (r=0.551*), organic carbon percentage (r=-0.045ns) and clay content (r=-0.206ns). There was no significant correlation between ΔK0 and ARKe with potassium uptake values by wheat. In contrast, there was a strong correlation between PBCK values and potassium uptake by wheat (r = 0.729**), and relative wheat YIELD (r = 0.735**). There was no significant correlation between Q/I parameters when KCl and K2SO4 were used, and the soil physicochemical properties. However, Q/I parameters obtained from KCl showed a higher correlation with wheat plant's growth indices.

Cites

THE STUDYING Q/I PARAMETERS OF POTASSIUM IN THE CALCAREOUS SOILS OF ARID AND SEMI ARID REGIONS IN ISFAHAN AND CHAHARMAHAL-VA-BAKHTIARI PROVINCES

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APA: Copy

GHANAVATI, N., MALAKOUTI, MOHAMMAD JAFAR, & HOSSEINPOUR, A.R.. (2009). CORRELATION OF Q/I PARAMETERS WITH SOME SOIL PROPERTIES AND POTASSIUM UPTAKE BY WHEAT IN SOME SOILS OF ABYAK REGION. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 13(49), 167-177. SID. https://sid.ir/paper/14843/en

Vancouver: Copy

GHANAVATI N., MALAKOUTI MOHAMMAD JAFAR, HOSSEINPOUR A.R.. CORRELATION OF Q/I PARAMETERS WITH SOME SOIL PROPERTIES AND POTASSIUM UPTAKE BY WHEAT IN SOME SOILS OF ABYAK REGION. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2009;13(49):167-177. Available from: https://sid.ir/paper/14843/en

IEEE: Copy

N. GHANAVATI, MOHAMMAD JAFAR MALAKOUTI, and A.R. HOSSEINPOUR, “CORRELATION OF Q/I PARAMETERS WITH SOME SOIL PROPERTIES AND POTASSIUM UPTAKE BY WHEAT IN SOME SOILS OF ABYAK REGION,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 13, no. 49, pp. 167–177, 2009, [Online]. Available: https://sid.ir/paper/14843/en

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