Non-metallic trace element (B), present in small amounts in all floors and plants occurs. The nutrient is for the growth of vine very important for transporting it sugar needed. Only small amounts are needed, too large amounts also cause damage. Especially young vines can die after boron fertilization. Boron excess is manifested by yellowish or reddish discoloration of the leaves from the leaf margin, as well as punctate dying. In mild deficiency, the leaves are light marbled and dark green marbled, with stronger shine the younger leaves, discolored from the edge, waves and die. The leaves are partly asymmetrical (crooked) and a bit torn. In severe deficiency the tendrils and shoot tips off, side and Geiztriebe then grow stronger and it comes to the so-called broom growth and chlorosis, In excess boron as well as in Bormangel are the germination and fruit set impaired and the bills Verrieseln, This in turn leads to chicken disease or. millerandage, Bormangel occurs especially in dry conditions. Therefore, preventive measures regarding water storage capacity make sense. Furthermore, a defect with boron fertilization or by leaf pollination is eliminated.