Phosphorus in rocks, minerals and organic substances breaks down and becomes free, and the plant benefits from these free phosphorus compounds. However, phosphorus is generally found in the soil in a bound form that plants cannot benefit from. Especially in high pH, ​​calcareous or high magnesium soils, it precipitates by forming insoluble compounds as calcium phosphate or magnesium phosphate, and plants cannot benefit from this structure. strong> The plant's utilization rate of phosphorus from fertilization is around 30%. We can ensure the effectiveness of the phosphorus given by fertilizers or available in the soil by lowering the pH.

   Plants can easily absorb free phosphorus in the soil. Phosphorus is most abundant in young plants. It is used during the period. Phosphorus use increases relatively during the seed period.

   Phosphorus is absolutely necessary for issues such as flowering biology, seed formation, energy transfer (ATP), and gene transfer (DNA).

   Phosphorus deficiency causes damage to the plant, mostly in the generative aspect. Phosphorus deficiency manifests itself primarily in old leaves (they are mobile). In case of deficiency, the leaves first turn dark green, then blue green, and then red and red-purple.

   In excess of phosphorus or excessive phosphorus fertilization, it prevents the uptake of iron (Fe+2), zinc (Zn+2), calcium (Ca+2), boron (B) and manganese (Mn+2).

Phosphorus Uptake Forms: H2PO4 and HPO4-2

Functions of Phosphorus in Plants:

· Energy transfer (ATP) is effective in the transportation and storage of substances such as sugar and starch.

· It takes part in the formation of nucleic acids (DNA) and gene transfer.

· It is important in flower and fruit formation and root development.

· It is essential for cell division and formation of new cells.

· It regulates the growth of my meristem tissues.

Phosphorus Deficiency Symptoms:

· Lifeless, weak and soft flower formation.

· Leaves turning first to dark green, then to blue green, and then to red and red-purple (anthocyan accumulation).

· Weakening of the roots, lifelessness and insufficient formation of absorbent hairs.

· Shortening, thinning and threadlike development in the shoots, narrowing between the nodes.

· In addition to the formation of small and misshapen fruits, it causes a decrease in the number of seeds, kernel development disorders and a shortening of the shelf life.

Conditions that Reduce Phosphorus Uptake:< /strong>