Soya bean - 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.
Causes
Copper deficiency
Reports of copper deficiencies are rare in greenhouses. In field cultivation, they are most likely on sandy or organic soils.
Soya bean - 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.
Causes
Copper deficiency
Reports of copper deficiencies are rare in greenhouses. In field cultivation, they are most likely on sandy or organic soils.
Soya bean - 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.
Causes
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
- 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
- Prevention of fungal diseases
