Potassium deficiency in cereal crops is indicated by
Potassium deficiency in cereal crops is indicated by
Explanation
Potassium shortage shows first on older leaves. The edges and tips turn brown as if scorched by fire.
Yellowing of young leaves suggests iron or nitrogen problems. Purple leaves often mean phosphorus deficiency. White spots can indicate various diseases.
The burning pattern starting from leaf edges is the classic sign of potassium deficiency.