| Abstrakt: |
Four sites were selected from the soils that differ in soil texture and in the area extending from the river shoulders of the Euphrates River and west towards the Great Al-Musayyib project. To study the state of potassium adsorption, the samples were taken, dried aerobically, then sieved through a sieve with a holes diameter of 2 mm, and 1 gm of each type of tissue was taken from it and placed in polyethylene tubes with a capacity of 100 ml, then 30 ml of potassium solution was added to it with the following concentrations: 20, 40 and 80 and 100, 120, 140, 160 and 180 mg .L-1, which were prepared from potassium sulfate salt and described the adsorption process using Lankmeyer linear equation. The most important results indicated that the highest value of adsorbed potassium was 80.8 mg kg-1 in the clay soils, while the lowest value was 64.9 mg kg-1 in the sandy mixed texture soils. The amount of adsorbed potassium increased as the amount of potassium was added to the release solution, and there was a positive effect of the separated clay and organic matter in increasing the values of adsorbed potassium, while the effect was negative with the soil properties of separated sand and carbonate minerals. [ABSTRACT FROM AUTHOR] |
