Nutriments
Prunes - Chlorosis
Symptômes
Older leaves turn dark green and then progress to a yellowish green to yellow between the veins.
Severely affected plants show leaf scorch along the margin.
Leaves may have 'wavy' margins and drop off.
Raisons
Copper deficiency
Deficiency is rare in stone fruit because of widespread use of copper sprays to correct diseases such as bacterial cancer.
Copper deficiency aggravé par
- Organic soils
- Chalky soils
- Sandy soils
- Reclaimed heathland
- High nitrogen applications
Cuivre est important pour
- New growth is vigorous and healthy
- Pre-mature leaf fall does not occur
- Yield maybe increased
