Calcium deficiency 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
- Reduces Bitter Pit and other related disorders
- Increases fruit size
- Gives better fruit colour
- Increases fruit firmness
- Reduces storage disorders
Yara recommended fertilizers for Calcium
YaraVita CALTRAC 400
Apple: 3-5 l/ha repeated at 10 day intervals from 4 weeks after petal fall up to one month before harvest. Water rate: 500 l/ha minimum. N.B. Caltrac 400 may leave a white residue. For apples, this should be easily removed if an acid wash is being used prior to waxing, or through normal water dumps and brushes. It is advised that sprays should not be used later than 4 weeks before harvest.
Read more about YaraVita CALTRAC 400YaraVita PHOZTRAC
Apple: 5 l/ha starting 6 weeks after petal fall and repeat at 7 to 14 day intervals. Do not apply within 1 month of harvest. Water rate: 500-2000 l/ha.
Read more about YaraVita PHOZTRACYaraVita STOPIT
Apple: Repeat applications of 7.5 to 10 l/ha applied at 7 to 14 day intervals from end of flowering to harvest. Water rate: 150-1000 l/ha.
Read more about YaraVita STOPIT