Nutrients

P Phosphorus
K Potassium
Mg Magnesium
Ca Calcium
S Sulphur
B Boron
Fe Iron
Mn Manganese
Zn Zinc

Apples - Deformation

Symptoms
Low calcium concentrations produce bitter pit shown by depressed areas on apple surface and small, brown corky areas within flesh.

Reasons
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

Reasons
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.

Reasons
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.

Reasons
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

Reasons
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 fertilizers for Calcium

YaraVita® STOPIT™

YaraVita® STOPIT™

Apples: 5 to 10 l/ha at 10 to 14 day intervals so that the final application is made one week before harvest. Water rate: 500 l/ha. Pommiers: 5-10 l/ha tous les 10-14 jours. Commencer les applications pour que le dernier traitement soit effectué 1 semaine avant la cueillette (pour les poiriers 2-3 applications de 5-10 l/ha à partir de la chute des pétales et tous les 10-14 jours). Volume d'eau: 500 l/ha.

Read more about YaraVita® STOPIT™

Other recommended products

YaraLiva® TROPICOTE®
Apple: At establishment and for young, non-bearing trees apply .1-.25 pounds N/tree. For established orchards, apply 55-70 pounds N/tree is split applications at post harvest and again in spring at flowering. The rate is dependent upon several factors such as soil and tissue analysis as well as variety, tree population and pruning.
YaraVita® CALTRAC™
Apples: Repeat applications of 3 to 4 l/ha at 7 to 10 day intervals from petal fall. A single application of up to 10 l/ha may be made from petal fall to just after 'June drop'. Minimum water rate: 200 l/ha. Note: Late applications may leave a deposit on the crop. Pommiers: Application répétées de 3 à 4 l/ha à 7-10 jours d'intervalles de la chute des pétales. Une seule application de jusqu' à 10 l/ha peut être effectuée du stade chute des pétales jusqu' à la chute physiologique (de juin). Volume d'eau minimum: 200 l/ha. Note Les applications tardives peuvent laisser un dépôt sur la culture.