Copper deficiency made worse by

  • Organic soils
  • Chalky soils
  • Sandy soils
  • Reclaimed heathland
  • High nitrogen applications

Copper is important for

  • Component of enzymes
  • Important role in photosythesis and phenol metabolism of plants
  • Regulation of destructive superoxide radicals inside cells
  • Bulb quality
  • Skin finish and colour

Yara recommended fertilizers for Copper

YaraVita COPTRAC 500

YaraVita COPTRAC 500

Onion: 0.5 l/ha two weeks after transplanting, or in the case of direct sown crops, when the crop is 15 cm tall. Repeat applications at 10 to 14 day intervals. Water rate: 50-200 l/ha.

Read more about YaraVita COPTRAC 500