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 when fertilizing.

   Boron has a relationship with protein synthesis in plants. It takes part in the formation and transportation 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 heart rot in sugar beet, brown pith in radishes, brown spots in potatoes, crown disease in tobacco, fungal seed house in apples, or tipç Diseases such as yellowing are seen.

Functions of Boron in Plants

· It takes part in the transport and placement of calcium.

· It is necessary for seed formation, fruit set, pollen health and fertilization.

· It helps the formation of hormones (especially auxins).

· It has an effect on cell division.

Boron Deficiency Symptoms

· The first symptoms are young; It is seen on the leaves. Youngç leaves turn yellow and become deformed.

· The most important symptom is the death of the growth points and development stops.

· The fruits are small and distorted.

· Cracks are seen in the fruit and these cracks are obvious.

· Flower formation is low, flower drop may be seen and pollen decreases.

· Youngç shoots are short and gum-flowing is observed.

· Leaf veins become corky, premature leaf fall. fungus may occur in the fruit seed house or fruit seed shell.

· The leaves thicken, the color darkens, and midrib fungus appears. Leaves and stem are crisp and brittle