Calcium deficiency on orange made worse by
- Acidic soils
- Sandy or light soils (leaching)
- Acid peat soils
- Soils rich in sodium
- Soils rich in aluminium
- Drought conditions
- Fruit high in nitrogen or potassium
- Large fruit
Calcium is important for
- Leaves are properly formed and remain throughout cycle
- Overall tree growth is more vigorous
- Yield often increases
- Fruit-size more regular and uniform
- Better quality fruit
- Better skins - less 'Albedo Breakdown' (creasing)
