Potassium

Deficiency Symptoms :

Deficiency symptoms appear on old leaves whilst young leaves remain green and healthy, Chlorosis of old leaves (early stages).  Marginal chlorosis with Yellow-Pale green leaves & puckering of the leaves Necrosis on older leaves & interveinal necrosis.  The stem show stout & Stunted stem growth.  Leaf tips & or margins curl up or down giving a wavy appearance.  Fewer or smaller mature heads which set few grains / seed Bronze / Pale brown necrotic lesions.

Soil application of Murate of potash 20 kg/ha at foliar spray of KCl 1%.