Q/I PARAMETERS OF POTASSIUM IN THE SOILS OF MAZANDARAN UNDER TOBACCO CULTIVATION

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DORDIPOUR E.; GHOLIZADEH ABD ALLATIF

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Journal: Journal of Plant Production Research Year:2009 | Volume:16 | Issue:1 Page(s): 1-16

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Title

Q/I PARAMETERS OF POTASSIUM IN THE SOILS OF MAZANDARAN UNDER TOBACCO CULTIVATION

Author(s)

DORDIPOUR E. | GHOLIZADEH ABD ALLATIF | Issue Writer Certificate

Keywords

K EXCHANGEQ3

NH4AOC-KQ3

Q/I PARAMETERSQ3

SPECIFIC K SITESQ3

ACTIVITY RATIOSQ3

Abstract

Quantity-intensity (Q/I) relationships provide insight into a soil’s immediate K status. Q/I PARAMETERS of potassium and their relationships with some soil properties were investigated on 15 combined top soil samples (0-30 Cm) collected from the cultivated tobacco fields in Mazandaran. The amount of the equilibrium activity ratio for potassium (AReK) ranged from 0.0009 to 0.0313 (Cmol/l)0.5. The adsorbed K held specifically at edge /wedge shaped positions in Darabkola, Chalamardi and Ervet soils. In contrast, soils of Valaghoz and Parvarichabad held the K at planar surfaces. Labile K (-DKo) ranged from 0.007 to 1.44 with a mean value of 0.332 Cmol/kg. The lowest value found in Ervet soil and the highest one in Parvarichabad soil. However, NH4AOc-exchangeable K values were always considerably higher than DKo values. This suggests that there were over estimation by NH4AOc (1N). Therefore, DKo is a better estimate of soil labile K than exchangeable K by NH4AOc (1N) soil test. The Kx values ranged from 0.050 to 1.026 Cmol/kg and the values for PBCK varied from 11.29 to 208.60 with an average of 99.24 (Cmol/kg)/(Cmol/l)0.5. The Paja and Darabkola-baboyeh soils had the lowest and highest values for PBCK, respectively. There were significantly and positively correlations with each other among the DKo, AReK and NH4AOC-K at 1% probability level. The Q/I PARAMETERS provide useful information for understanding available K stauts of soils and can be used for K-fertilizer recommendations.

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APA: Copy

DORDIPOUR, E., & GHOLIZADEH, ABD ALLATIF. (2009). Q/I PARAMETERS OF POTASSIUM IN THE SOILS OF MAZANDARAN UNDER TOBACCO CULTIVATION. JOURNAL OF PLANT PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 16(1), 1-16. SID. https://sid.ir/paper/155909/en

Vancouver: Copy

DORDIPOUR E., GHOLIZADEH ABD ALLATIF. Q/I PARAMETERS OF POTASSIUM IN THE SOILS OF MAZANDARAN UNDER TOBACCO CULTIVATION. JOURNAL OF PLANT PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2009;16(1):1-16. Available from: https://sid.ir/paper/155909/en

IEEE: Copy

E. DORDIPOUR, and ABD ALLATIF GHOLIZADEH, “Q/I PARAMETERS OF POTASSIUM IN THE SOILS OF MAZANDARAN UNDER TOBACCO CULTIVATION,” JOURNAL OF PLANT PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 16, no. 1, pp. 1–16, 2009, [Online]. Available: https://sid.ir/paper/155909/en

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