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Nutrient Benefits


High Cu levels can reduce the availability of:

  • Iron
  • Zinc
  • Manganese
  • Molybdenum


  • Mn uptake and assimilation


  • Chlorophyll production
  • Photosynthesis
  • Production of enzymes protein
  • Involved in several enzyme systems
  • Oxidation reduction reactions
  • Formation of lignin
  • Water movement regulation
  • Seed production

Deficiency Symptoms

  • Marginal chlorosis of young leaves
  • Twig dieback
  • Pigtailing
  • Necrotic, brown spots over leaf surface
  • Reduced growth and yields

Factors Affecting Availability

  • Soils with excess N or P
  • High pH soils
  • Heavily limed soils
  • Soils that have had Mo applied
  • Peat and muck soils high in organic matter
  • Leached acid soils
  • Alkaline and calcareous soils
  • Cold, wet conditions (delayed availability at spring time)
  • Soils with high concentration of Mn
  • Soils formed from parent materials low in Cu

Sensitive Crops

  • Cereals, corn, alfalfa, citrus trees, lettuce, carrots, onions, oilseeds, tomatoes, spinach, flax, blueberries, beets, peppers


The following OMEX products can assist with addressing and correcting Copper deficiency:

Visual Guide