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Van Iperen Calcium Nitrate Fertigation Grade is a completely soluble Calcium fertilizer. Our product has a limited caking sensitivity and is recommended as of early spring until fruit setting and fruit development. The high level of Calcium improves the strength of cell walls during active cell division stages. The presence of Nitrogen has a positive effect on the uptake of Calcium in the plant.

  • Improves fruit quality (less sensitive to bitter pit and blossom end rot) and shelf-life
  • Developed for fertigation in open field crops and orchards


  • Low on heavy metals
  • Low on Sodium and Chloride
  • Grey granules
  • Production process certified according to ISO 9001:2009
  • Easy to handle, dissolve and apply


Crop Application date Min kg/ha/season Max kg/ha/season
Fruit trees (adult)
• As of flowering
• Until fruit filling
200 500
• As of tuber setting
• Until tuber ripening
100 300
• As of leaf bud opening
• Until vegetative growth
100 300
Table grape
• As of leaf bud opening
• Until vegetative growth
100 300
Fruit vegetables
• As of 4 weeks after planting
• Until fruit filling
150 400
• During vegetative growth
• Until fruit filling
100 250
• Spring application
• Winter application
200 600
• As of plant establishment
• Until fruit filling
200 500

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Compatible with other fertilizers, with the exception of Sulphate or Phosphate fertilizers. Therefore a separate tank is needed or fertilizers should be applied at different times.

Fertilizing Knowledge

Which Calcium Nitrate to use?

Calcium Nitrate is a good source of both Calcium and Nitrate. Depending on the type of application, you can choose between different grades and formulations. Van Iperen offers you the widest range of Calcium Nitrates. Let’s see which one suits your needs.

Find out more