Calcium Nitrate

Product characteristics

Calcium Nitrate

  • Full solubility, no residues
  • Low impurities (phosphate, iron, fluoride) and low ammonium (N-NH4) concentration.
  • The dissolved product gives a fully transparent solution after dissolving
  • The product is white / slightly yellowish pellet shaped
  • For fertigation in high tech horticultural circumstances (soilless) and foliar spray
  • Also available in specific derivates with e.g. Magnesium Nitrate and/or (chelated) trace elements
  • Compatible with most water-soluble fertilizers

Dosing information

The mentioned indicated dosages and application stages are subject to soil and climatic conditions, influence of previous crops and other specific conditions. Exact dosages and application stages can only be given after an objective diagnostic procedure by e.g. soil, substrate and / or plant analyses.
The product is compatible with most commonly used fertilizers, except sulphate or phosphate fertilizers. Therefore the usage of a separate tank is needed or fertilizers should be applied on different times.

Dosing instructions |Fertigation

Crop Application date Total dosage in kg/ha
Fruit trees Direct after flowering 200 – 500 kg
Vineyards (adult table grapes) Before or just after bud opening until beginning of vegetative growth 100 – 200 kg
(Processing) vegetables
- Potatoes
- Tomatoes
- From tuber initiation till ripening stage
- From 1 month after transplantation until maturation stage
100 – 200 kg
150 – 300 kg
Vegetables (fruit bearing crops) Direct after flowering. 150 – 250 kg


Dosing instructions | Foliar application

Crop Application date Dosage in kg/application* Application rate in % solution (w/v)
Apple, pear 5 – 10 applications:
- Early fruit enlargement until 6 weeks
before harvest
5 – 10 kg 0.5 – 1.5%
Stone Fruits 3 – 4 applications:
- Early fruit growth until beginning of maturation
3 – 6 kg 0.5 – 1.0%
- Adult table grapes
2 – 3 applications:
- As of beginning of fruit growth until maturation stage
4 – 6 kg 0.5 – 1.0%
- Melons / cucumber
- Tomatoes / pepper
- From fruitsetting until 2 weeks before harvest, every 2nd week
- From fruitsetting until harvest, every 10 days
2 – 5 kg 0.5%
0.1 – 0.3%


Available in packaging of 25kg and 1.000kg.

Function of Calcium

Calcium plays a major role in the formation of the cell wall membrane and its plasticity. It increases normal cell division by maintaining cell integrity and membrane permeability. Calcium also acts as an activator of several enzyme systems in protein synthesis and carbohydrate transfer. Calcium mixes with anions including organic acids, sulfates and phosphates. It acts as a detoxifying agent by neutralizing organic acids in plants. Calcium indirectly helps improve crop yields by reducing soil acidity when soils are limed.

Deficiency of Calcium

Calcium-deficient leaves show necrosis at the leaf base. Due to the very low mobility of calcium, symptoms first appear on the younger leaves. Classic signs of calcium deficiency include burning of the top of tomato fruits, tip burn of lettuce, blackheart of celery and the decease of the growing regions in many plants. Soft necrotic tissue in rapidly growing areas is common. This is generally related to poor translocation of calcium rather than to a low external supply of calcium. Slow growing plants suffering from calcium deficiency may re-locate calcium from older leaves to younger ones in order to maintain growth. Consequently, the margins of the leaves will develop more slowly than the inside causing the leaf to cup downward. Finally, petioles will develop but without leaves. Plants suffering from chronic calcium deficiency have a much greater tendency to wilt than non-affected plants.
Apple Lemon Tomato