Skip to content
Research Article Open access CC BY 4.0

Effect of Different Temperatures on Reactions of Potassium Adsorption and Availability in Saline Soils within Nineveh Governorate, Iraq

Haneen H. A. Al-Jubory, Qahtan D. Essa Al-Khafagi

Asian Journal of Soil Science and Plant Nutrition · pp. 604–614 · Published 9 Dec 2024

10.9734/ajsspn/2024/v10i4432

Abstract

Thermodynamic criteria were used to evaluate the adsorption and release of potassium in saline soils. The study was conducted on three sites that differ in salt content in Nineveh Governorate - Iraq, and each site is divided into two depths (surface and subsurface). The study was conducted at three temperatures (278, 298, 318 Kelvin). The results of the study showed that there was an increase in the amount of potassium adsorbed and the percentage of adsorption with an increase in the amount of potassium added in all the studied soil samples. For the ability of the soil to the adsorption, the results showed a sudden increase in the adsorption of potassium at the application of the high levels (1 and 2 mmolL-1) of potassium in all the studied soils. Also, the highest value of the ionic activity of potassium (ARk) was (14.05 × 10-3 molL-1/2), at a temperature of 298 K in the subsurface soil layer of the first site, while the lowest one was (1.61 × 10-3 molL-1/2), in the same layer of the first site at a temperature of 278 K. The values ​​of free energy of potassium, ΔGK, in the studied soils ranged from the highest value reached (-14.85×10-3 kJ) at a temperature of 278 K, to the lowest value, reached (-10.56×10-3 KJ) at a temperature of 298 K, in the subsurface soil layer of the first site. Regarding the values ​​of entropy reaction, they ranged from the highest value of -53.43 Jmol-1 in the subsurface depth of the first site at a temperature of 278 K to the lowest value of -35.46 in the same layer of the first site at a temperature of 298 K. On the other hand, the enthalpy values ​​of the studied soil samples were negative, which indicates that the reaction is of the exothermic type, where the highest negative value for enthalpy was -29.70 kJmol-1 at a temperature of 278 K in the subsurface soil layer of the first site and the lowest negative value, was -20.42 kJmol-1 in the same layer of the first site at a temperature of 298 K.

Ionic activity of potassium free energy of potassium entropy of potassium reaction enthalpy of potassium

References (14)

  1. 1 Soil Sampling and Methods of Analysis [DOI]
  2. 2 Potassium supplying capacity of a red soil from eastern India after forty-two years of continuous cropping and fertilization [DOI]
  3. 3 Environmental Soil Chemistry [DOI]
  4. 4 Potassium availability: An approach using thermodynamic parameters derived from quantity-intensity relationships [DOI]
  5. 5 Potash Use and Dynamics in Agriculture [DOI]
  6. 6 Assessing the availability of potassium and its quantity-intensity relations under long term conservation agriculture based cereal systems in North-West India [DOI]
  7. 7 Effects of cations and anions on iron and manganese sorption and desorption capacity in calcareous soils from Iran [DOI]
  8. 8 Assessment of Soil Potassium Sufficiency as Related to Quantity‐Intensity in Montmorillonitic Soils [DOI]
  9. 9 Adsorption of cations at the illite–water interface and its effect on intrinsic potassium ions [DOI]
  10. 10 A Critical Evaluation on the Use of Kinetics for Determining Thermodynamics of Ion Exchange in Soils [DOI]
  11. 11 Potassium Fixation and Release in Some Calcareous Soils under Orange Cultivation [DOI]
  12. 12 Comparison of potassium quantity-intensity relationships in tropical paddy soil under tillage and no-tillage systems after fifteen growing seasons [DOI]
  13. 13 Evaluation of Potassium Quantity-Intensity in some Soils of El-Dakhla Oasis, New Valley, Egypt [DOI]
  14. 14 Behavior of Potassium in Soil: A mini review [DOI]

Cited by 1

Depth Function of Available Phosphorus and Potassium Distribution in Different Mid-Mesopotamian Plain Saline Soils

K. Wheib, Afrah K. S. AL-Jubouri, H. Isa · Basrah Journal of Agricultural Sciences · 2025

Article metrics

Real usage data collected on this platform.

24

Page views

0

PDF downloads

1

Outbound clicks

1

Citations

Views over time

Views by country

Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".

Traffic sources

Referring site, by host.

Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.