Copper deficiency made worse by
- Organic soils
 - Calcareous soils
 - Sandy soils
 - Reclaimed heathland
 - High nitrogen applications
 
Copper is important for
- Healthy green foliage
 - Improved yield
 
Yara recommended fertilizers for Copper
YaraVita® COPTRAC™
Potatoes: 0.5 l/ha applied 7 to 14 days after 100 percent emergence and following petiole analysis during tuber bulking. Water rate: 200 l/ha (50 l/ha for aerial application).
Read more about YaraVita® COPTRAC™