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

  • Improved berry quality
  • Reduction of grape stalk necrosis
  • Improved berry firmness and storage potential

Yara recommended fertilizers for Calcium

YaraVita CALTRAC

YaraVita CALTRAC

Grapevines: Two applications of 5 L/ha at a 10 to 14 day interval prior to flowering. Also, repeated applications of 5 L/ha at 10 to 14 day intervals from fruit set e.g. fruit set, bunch closure ( pea sized berries ), start of ripening and two weeks later. Water rate: 200 L/ha. NB Late applications may leave a deposit on berries which may be of significance for table grapes.

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N-CAL 15+18Ca+B

N-CAL 15+18Ca+B

Grapevines: Fertigate 130-360 l/ha in multiple applications from growth stage; new shoot growth to fruit set and again during post harvest. Refer to Yara crop programs and contact your local Yara sales agronomist for advice.

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