Nutrients

N Nitrogen
P Phosphorus
K Potassium
Mg Magnesium
Ca Calcium
S Sulphur
B Boron
Cu Copper
Fe Iron
Mn Manganese
Mo Molybdenum
Zn Zinc
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Soybean - Deformation

Symptoms
Some leaf blades in the upper and medium height show irregular yellow discolorations, starting from the leaf veins. In the displayed photo, the interveinal fields remain green.

Reasons
Copper deficiency. Reports of copper deficiencies are rare in greenhouses. In field cultivation, they are most likely on sandy or organic soils.

Soybean - Chlorosis

Symptoms
Several leaf blades in the upper and medium height show yellow discolorations, starting from the leaf margins and proceeding towards the leaf base.

Reasons
Copper deficiency. Reports of copper deficiencies are rare in greenhouses. In field cultivation, they are most likely on sandy or organic soils.

Soybean - Deformation

Symptoms
Some leaf blades in the upper and medium height show irregular yellow discolorations. In the present case, an interveinal chlorosis produces a mottled appearance.

Reasons
Copper deficiency. Reports of copper deficiencies are rare in greenhouses. In field cultivation, they are most likely on sandy or organic soils.

Copper deficiency made worse by

  • Organic soils
  • Calcareous 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
  • Prevention of fungal diseases

Yara recommended fertilizers for Copper

YaraVita® COPTRAC™

YaraVita® COPTRAC™

0.5 l/ha from the 4 to 6 leaf stage. Water rate: 30 to 200 l/ha.

Read more about YaraVita® COPTRAC™

Other recommended products

YaraVita® OPTITREL™
YaraVita® OPTITREL™
Soya bean: 1 to 3 l/ha as early in the growing season as possible, provided there is adequate leaf cover to intercept the spray. Water rate: 30 to 200 l/ha. Soja: 1 à 3 l/ha appliquer dès que la surface foliaire est suffisamment développée. Répéter à 10 à 14 jours d'intervalle si nécessaire. Volume d'eau: 30 à 200 l/ha.