Boron is in the form of unionized boric acid (BHCO) 3 in soil. The limits of boron deficiency and toxicity occur within a very narrow window. Therefore, great care should be taken in fertilization.

Boron has a relationship with protein synthesis in plants. It takes part in the formation and transport of carbohydrates. It helps transport and replace calcium. It affects flower and fruit setting. It is necessary for pollen formation and hormone synthesis.

Boron deficiency causes diseases such as core rot in sugar beets, brown pith in radishes, brown spots in potatoes, crown disease in tobacco, and fungal seed rot or tip yellowing in apples.

• It takes part in the transport and placement of calcium.
• It is necessary for seed formation, fruit set, pollen health and fertilization.
• It helps with hormone formation (especially auxins).
• It has an effect on cell division.

• The first symptoms appear on young leaves. Young leaves turn yellow and become deformed.
• The most important symptom is the death of growth points and development stops.
• The fruits are small and distorted.
• Cracks appear in the fruit and these cracks are obvious.
• Flower formation is low, flower drop may be seen and pollen is reduced.
• Young shoots are short and gum bleeding is observed.
• Leaf veins become corky, premature leaf fall may occur, fungus occurs in the fruit core or fruit core shell.
• The leaves thicken, the color darkens, and midrib fungus appears. Leaves and stems are brittle and brittle