Competence in
natural raw materials
from renewable
Ca 8%

Product suitable for use in Organic Agriculture conforming to the annexes of the (CE) regulation n° 834/2007 and 889/2008. Inspected by ECOCERT SA F - 32600


Product key points

  • Liquid proteinate with Calcium complexed by biological active amino acids
  • Triple action: bio-stimulant, fertilizer and calcium deficiency corrector
  • 20% free amino acids guaranteed, no synthesis amino acids
  • “Made in the European Union” and certified to 889/2008/EC (European Bio-Regulation)

Aminogram BIO-PROTAN®Calcium
Values given have to be seen within natural deviations and analytical tolerance.Analysis by HPLC method.

Product description

BIO-PROTAN®Calcium is a liquid compound of calcium and organic molecules obtained by hydrolysis of natural protein. The unique formulation with amino acids (the organic molecules and “building blocks” of protein) corrects calcium deficiencies stimulating simultaneously the metabolism of the plant. BIO-PROTAN®Calcium is a multifunctional product performing at the same time as fertilizer (organic nitrogen), bio-stimulant (free amino acids promote rapid recovery in the event of stress) and calcium deficiency corrector.

BIO-PROTAN®Calcium is suitable for both foliar and soil application; however, we specially recommend foliar spraying due to the complexing and carrier properties of free amino acids formulated in the compound which are leading to the rapid and efficient leaf penetration of calcium.

Free amino acids are natural chelates able to ligate (“link”) with microelements and form a metal complex. Free amino acids are also very effective in conveying the linked microelements through the cells to the sites of utilization helping to overcome chemical and physical barriers of the leaf cuticle, the cell wall and the lymphatic system. Combining calcium and amino acids in foliar spray solutions leads to an increase of treatment efficacy and reduces the fertilizer application dose.

BIO-PROTAN®Calcium amino acids applied in fertigation within a particular pH range preserve the calcium mineral from insolubility and soil regression keeping it available in the metabolic form mainly used by the plant.

Calcium proteinate corrects generally the main physiological disorders from calcium deficiency and improves the firmness of green tissues and fruits, leading to a crop shelf life extension. Beyond that, BIO-PROTAN®Calcium prevents the risk of bitter pit and fruit cracking in pome fruits the blossom-end rot of tomato and solanaceous crops (potatoes and tobacco), the tip burn of leafy vegetables and the leaf and stalk spot of melon.

BIO-PROTAN®Calcium is a homogeneous and fully water-soluble formulation and does not clog filters and nozzles of the irrigation and spraying system.

Guaranteed analysis (%w/w)

Organic nitrogen 3,3%
Ammonium nitrogen 0,2%
Total nitrogen (N) 3,5%
Organic carbon (C) 11%
Calcium (CaO) 8%
Complexing agents
Total amino acids 22%
Free amino acids 20%
Total amino acid / peptides min. 255 g/L
pH-value (1:10) 4,5 - 5,5
Density 1,18 - 1,20 kg/L

Directions for use

L/ha / application
L/ha / application
Fruit trees, wine and table grape from pre-flowering to fruit enlargement,
2-4 applications every 10-15 days
3-4 L/ha 8-12 L/ha
Vegetable and industrial crops from fruit set to ripening every 7-10 days 3-4 L/ha 8-12 L/ha
Greenhouse crops from fruit set to fruit enlargement (vegetable crops) or during the whole crop cycle (leafy vegetables and flower crops), 2-4 applications every 10-15 days 200-250 ml/hl 8-12 L/ha

Dilute BIO-PROTAN®Calcium before using it on plants. In case of inexperienced handling we recommend a preliminary test on small areas before extending the treatment to the entire culture. The dosages advised are purely indicative and may vary depending on crop vegetative cycle, climatic and soil conditions and average yields expected.

Avoid the use with insecticides, Dodine, Fosetyl aluminum, polysulfides, Triforine and not selective herbicides. Do not use in conjunction with copper, stannous, tin and sulphur based products or with mineral oils since the combination with free amino acids improves the absorption rate and can result in phytotoxicity. In fertigation avoid mixtures with products with high phosforous content.

Handling and storage

  • Read carefully the safety data sheet before use.
  • Undiluted product can be stored at room temperature and well-closed original packaging for minimum 2 years.
  • In the case of longer storage, shake well before use


Size Units/pallet Pallet dim. [cm] Net weight Gross weight
5 L / 6 kg 120 drums/pal. 120 x 80 x H170 720 kg 780 kg
20 L / 24 kg 48 drums/pal. 120 x 100 x H140 1.152 kg 1.220 kg
200 L / 240 kg 4+4 drums/pal. 114 x 114 x H120 1.920 kg 2.030 kg
1.000 L / 1.200 kg IBC 120 x 80 x H120 1.200 kg 1.265 kg
24.000 kg in bulk 24.000 kg
Protan AG
Runkelsstrasse 38, FL-9495 Triesen
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