Greener Journal of Agricultural Sciences

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Ikiriko et al

By Ikiriko, ME; Kamalu, OJ; Joseph, IE (2022).

Greener Journal of Agricultural Sciences

Vol. 12(1), pp. 01-15, 2022

ISSN: 2276-7770

Copyright ©2022, the copyright of this article is retained by the author(s)






Potassium fixation of some soils derived from different parent materials in Cross River State, Nigeria.



Ikiriko, M.E1; Kamalu, O.J1; Joseph, I.E1



1Department of Crop and Soil Science, Faculty of Agriculture, University of Port Harcourt, Nigeria.





Article No.: 112921141

Type: Research

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Potassium fixation of some soils derived from different parent materials in Cross River State was studied being a major problem that affects the efficiency of K fertilizers. A total of eighteen soil samples were collected from three parent materials: Basement complex, Coastal plain sand and Shales. Six levels of potassium chloride (0, 25, 50, 100, 200 and 400 mg) were added to 1kg soil and replicated three times. Potassium was extracted with 1 N NH4OAc after one day, ten- and forty-two-days incubation. The amount of K fixed was determined and correlation between applied and fixed K was carried out. The soil pH ranged from 5.29 to 5.60, organic carbon varied from 1.33% to 2.18 %, the exchangeable cations are in order of abundance; Ca2+ > Mg2+ > K+ > Na+ and the ECEC of the soils varied from 4.86 cmol/kg for basement complex to 19.38 com/kg for shales. The mean proportion of K fixed varied from 2.06 to 279.05 mg/kg for Shales, 5.95 to 288.44 mg/kg for basement complex and 8.06 to 292.23 mg/kg for soils derived from coastal plain. There was significant correlation (P<0.01) between added and fixed potassium during all the incubation days, the results of this study show that the studied soils irrespective of the parent materials has the ability to fix K and thus, fertilizer recommendation should take into consideration of the amount that is initially fixed.



Accepted:  29/11/2021

Published: 20/01/2022


*Corresponding Author

Ikiriko M.E.

E-mail: miebaka.ikiriko@



parent materials, potassium fixation, potassium fertilizers.









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Cite this Article: Ikiriko, ME; Kamalu, OJ; Joseph, IE (2022). Potassium fixation of some soils derived from different parent materials in Cross River State, Nigeria. Greener Journal of Agricultural Sciences 12(1): 01-15.



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