Functions of boron in plants
The formation of the cell wall The integrity of the cell wall is required for calcium uptake and aids in the transport of sugars in the plant. Boron affects many functions in plants. These functions include flowering, pollen germination, fruiting, cell division, water relations, and the action of hormones. Boron must be taken throughout the life of the plant. It has no movement in the plant body, it is transported in the plant (xylem) tissue by the transplant effect. and can be easily washed from the soil. Boron is found in soil in the form of boric acid or borate anion. Boron is taken by plants in the form of non-ionized boric acid.
Boron deficiency in plants
Plants normally comprise between 25-100 ppm boron. 20 ppm is accepted as the deficiency limit of boron in plants. In many fruit trees, boron deficiency appears in fruits before it appears in leaves. In the case of boron deficiency in apples and pears, the flowers suddenly fade as if damaged by the cold and turn a black color. With these conditions, they do not shed and remain on the branch for a while. Although frost damage creates the same appearance, flowers affected by frost fall off immediately. In severe deficiency, leaf emergence is delayed, vegetative growth points die and a rosette effect is seen on the plant. The leaves are thick, curved and crisp. However, chlorosis is not seen in leaves. Discoloration occurs on fruits, tubers and roots, and small brown cracked spots appear. Shoots are short, leaves are small and distorted. Fruits are smaller than normal and sometimes crack occurs. It is known that many diseases in plants occur due to boron deficiency.