Silver-white, very hard heavy metal or element (Ni) that occurs in nature mainly in various mineral forms, including nickelin, garnierite and pentlandite. As a trace element, nickel is essential for almost all living organisms, as it is a key component of many enzymes.
In plant growth, including grapevines, nickel plays an important role in nitrogen and carbon metabolism. It is a component of enzymes such as urease and hydrogenase, which are important for growth, protein synthesis and plant health. A deficiency can lead to growth disorders, yield reduction and chlorosis. This is particularly common in acidic sandy soils.
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