Eight soil series varying in amount and type of clay Minerals were used to see K-fixation behaviour under alternate wetting and drying conditions. mineral identity in the clays was established by X-ray diffractometry. Illite was tha major mineral in all the soil series. The relative quantity of other 2:1 type clay minerals i. e. montmorillonite, vermiculite and chlorite was variable. Potassium was applied at the rates of 50, 100 and 150 mg K20 kg1 soil taken in plastic beakers. After completing four alternate wetting and drying cycles, the amount of K-fixed was determined. Illite was found to be the major fixer of fertilizer K. There was an increasing trend of K fixation with increasing K application and clay c
A. M. Ranjha, A. Jabbar , R. H. Qureshi. (1990) EFFECT OF AMOUNT AND TYPE OF CLAY MINERALS ON POTASSIUM FIXATION IN SOME ALLUVIAL SOILS OF PAKISTAN, , Volume 27, Issue 2.
