The role of nutrients in pistachio trees

Role of Nitrogen in Pistachio

Growth and fertility of pistachio trees are highly dependent on nitrogen and its deficiency limits crop growth and production. The main role of nitrogen in pistachios is the production of plant proteins. .
Symptoms of nitrogen deficiency in pistachio are yellowing of old leaves, decreasing vegetative growth, shrinkage of leaves, narrowing of newly grown shoots and decreasing diameter of shoots and decreasing number of seeds per panicle, reddening of bark and veins and petiole, germination The pistachio leaves fall faster than usual in the fall, and the seeds become lighter and lighter. 

The role of phosphorus in pistachio

Phosphorus plays an active role in cell division, and due to its role in ATP, it has been shown to be effective in plant energetics as well as in RNA-DNA structures. It is one of the elements that move very slowly in the soil and are stabilized by soil particles. As a result, phosphorus fertilizers should be consumed near the root and the fertilizer should not be mixed with soil in order to prevent its consolidation and inactivation. In conditions of phosphorus deficiency, the purple leaves of the branches, the branches become thinner, the leaves are dark green. There is also a decline in the lateral branches of the pistachio tree.
The availability of soil phosphorus by the plant depends more on its pH and soil conditions than on its amount in the soil. Slightly acidic to neutral pH is the best pH available for phosphorus. In alkaline soils, the formation of low solubility calcium phosphates and slow conversion to soluble forms reduces the plant's availability of phosphorus.

The role of potassium in pistachio

The role of potassium in plants is to help absorb water and facilitate the opening and closing of leaf openings. Potassium intake in pistachio also increases laughter percentage and reduces osteoporosis. In case of lack of potassium in pistachio plant resistance to pests and diseases will be reduced. Leaf margin upward and leaf margin show brown burn.

The role of calcium in pistachio

Calcium plays a very important role in the growth and development of roots in pistachio trees when the amount of calcium in the soil is low, the root will not grow too much and, consequently, the aerial parts of the leaves will not have much vegetative and reproductive growth. In calcium deficient pistachio trees, young leaves near the end of the branch are wrinkled and the tip of the leaves and their margins are up or down the tube. Calcium deficiency in pistachio trees occurs as interactions with other elements or lack of proper transport in the plant. The main problem with calcium deficiency in pistachio is not its absorption through the soil but its transport within the plant, which causes complications due to calcium deficiency, especially in fruits that need more calcium than other plant organs.