Potassium deficiency in cereal crops Is indicated by

Potassium is an essential nutrient for the growth and development of cereal crops. When there is a deficiency of potassium, it can be indicated by browning of leaves from the tips and margins. The leaves may also become weak and susceptible to disease and pests. This is because potassium helps in the regulation of plant water balance and strengthening of cell walls. Therefore, a lack of potassium can lead to water stress and weaker cell walls, causing the leaves to turn brown and die. Yellowing of younger leaves is not usually associated with potassium deficiency but rather with other nutrient deficiencies such as nitrogen. Purpling of leaves can be a sign of phosphorus deficiency. White and irregular spots on leaves can be caused by fungal or bacterial infections.