Competence in
natural raw materials
from renewable
Fe 5%


Product key points

  • Liquid proteinate with Iron complexed by biological active amino acids
  • For the prevention and care of Iron deficiency in fruit and horticultural crops
  • Free amino acids for the rapid and efficient penetration through the leaves and root system of the plant
  • “Made in the European Union”
  • Product suitable for use in Organic Farming in accordance with Regulations (EU) No 2018/848 and 2021/1165. Control ECOCERT F-32600.

Product description

BIO-PROTAN®Iron is a liquid compound of iron and organic molecules obtained by hydrolysis of natural protein. The unique formulation with amino acids (the organic molecules and “building blocks” of protein) corrects iron deficiencies stimulating simultaneously the metabolism of the plant.

BIO-PROTAN®Iron 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 iron.

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 iron and amino acids in foliar spray solutions leads to an increase of treatment efficacy and reduces the fertilizer application dose.

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

Iron proteinate corrects general iron deficiency physiopathies in fruit and horticultural crops. Its use is widespread to prevent and correct interveinal chlorosis and to increase photosynthesis. BIO-PROTAN®Iron is particularly helpful against iron chlorosis of sensible crops such as vegetables, strawberries, pome and stone fruit trees, citrus, olive trees, vines, cotton and ornamental plants.

Whenever the first symptoms of iron chlorosis are suspected or develop we recommend a treatment program of 2 to 4 applications during a period of 7 to 15 days.

BIO-PROTAN®Iron is homogeneous, fully water-soluble and without precipitation that could clog filters and nozzles of the irrigation system.

Guaranteed analysis (%w/w)

Organic nitrogen 2,0%
Ammonium nitrogen 0,2%
Total nitrogen (N) 2,2%
Organic carbon (C) 6,5%
Iron (Fe) 5%
Complexing agents
Total amino acids 12%
Total amino acid / peptides min. 155 g/L
pH-value (1:10) 6,3
Density 1,15 +/- 0,2 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
2,5-5 L/ha 6-10 L/ha
Vegetable and industrial crops from fruit set to ripening every 7-10 days 2,5-5 L/ha 6-10 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 150-300 ml/hl 6-10 L/ha

Dilute BIO-PROTAN®Iron 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, crop vegetative cycle, climatic conditions and average yields expected.

Avoid formulation with products incline to strong alkaline reactions and sulphur based products; do not use in conjunction with copper, stannous based products and mineral oils since the combination with free amino acids improves the absorption rate and can result in phytotoxicity.

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 790 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 H210 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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