Symptoms of Phosphorus Deficiency in Plants:
Phosphorus deficiency will make the leaves turn dark, dull, blue-green, and may become pale in severe deficiency. Reddish, reddish-violet, or violet color develops from increased anthocyanin synthesis, the growth of the aerial part and the root is stopped or reduced and causes the plants to remain short. Phosphorus deficiency prevents the growth of lateral stems and delays the opening of blossoms and buds and the ripening of fruits. Also, due to the lack of this element, the number of leaves and branches of trees is reduced, the leaves become brittle and the side buds are lost. Signs of phosphorus deficiency in plants include dark and purple leaves, reduced growth and shortness of the plant.