Copper

A micronutrient, which is represented by the chemical symbol Cu. Copper is involved with oxidation and reduction processes within a plant, including photosynthesis, respiration and transpiration, as well as chemical reactions involving Nitrogen. It contributes to the integrity of cell walls.

Deficiencies result in reduced carbohydrate production, a stunted growth, wilting of leaves, and often a bluish tinge on the tips of leaves. New leaves can show interveinal chlorosis, whilst this can become more widespread with necrosis in older leaves.