Distribution of potassium in leaf according to its position on stalk was studied on flue-cured tobacco. In the normal and healthy plant under sufficient supply of potassium, the K content of leaf decreased from bottom to the top position of the plant while in potassium-deficient plants, a reverse trend was observed. Severe symptoms of potassium-deficiency were observed when K content of leaf fell below 1 %. The healthy tobacco plants showed leaf K content above 3 %. The K content of leaf in bottom, middle and top position of the plant showed a strong positive correlation with netural normal NH4OAc extractable K content of the surface soil.
