Apples - Deformation
Symptoms
Low calcium concentrations produce bitter pit shown by depressed areas on apple surface and small, brown corky areas within flesh.
Causes
Calcium deficiency
May be confused with boron deficiency. But boron deficiency causes symptoms in early state of fruit development, while calcium deficiency gives symptoms a few weeks before harvesting or in store.
Apples - Deformation
Symptoms
Low calcium concentrations produce bitter pit shown by depressed areas on apple surface and small, brown corky areas within flesh
Causes
Calcium deficiency
May be confused with boron deficiency. But boron deficiency causes symptoms in early state of fruit development, while calcium deficiency gives symptoms a few weeks before harvesting or in store.
Apples - Deformation
Symptoms
Low calcium concentrations produce bitter pit shown by depressed, sometimes dark areas on apple surface and small, brown corky areas within flesh.
Causes
Calcium deficiency
May be confused through boron deficiency. Boron deficiency causes symptoms in early stage of fruit develpment, while calcium deficiency gives symptoms a few weeks before harvesting or in store.
Apples - Deformation
Symptoms
Low calcium concentrations produce bitter pit shown by depressed spots on apple surface and small, brown corky areas within flesh.
Causes
Calcium deficiency
May be confused with boron deficiency. But boron deficiency causes symptoms in early state of fruit development, while calcium deficiency gives symptoms a few weeks before harvesting or in store.
Apples - Deformation
Symptoms
Low calcium concentrations produce bitter pit shown by depressed areas on apple surface and small, brown corky areas within flesh
Causes
Calcium deficiency (left)
May be confused with boron deficiency. But boron deficiency causes symptoms in early state of fruit development, while calcium deficiency gives symptoms a few weeks before harvesting or in store.
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 fertilisers for Calcium deficiency
YaraVita STOPIT
Apple: 2 to 5 l/ha applied at bud burst and repeated at 7 to 10 day intervals as necessary to the beginning of flowering. Regular applications of 5 to 10 l/ha at 7 to 14 day intervals from petal fall to one week before harvest. Water rate: 150 to 500 l/ha.
Read more about YaraVita STOPIT
