Competence in
natural raw materials
from renewable
B 1,5% | Fe 1% | Mg 0,8%
Mn 0,1% | Zn 0,1% | Mo 0,001%


Product key points

  • Liquid proteinate with microelements complexed by biological active amino acids
  • Triple action: foliar bio-stimulant, organic nitrogen fertilizer and micronutrient deficiency corrector
  • Balanced proportion and combination of micronutrients and natural amino acids
  • Rapid and efficient penetration through the leaves
  • “Made in the European Union”
  • Product suitable for use in Organic Farming

Product description

BIO-PROTAN®Microcomplex is a liquid compound of micronutrients and organic molecules obtained by hydrolysis of natural protein. The unique combination of naturally chelated microelements and amino acids (the organic molecules and “building blocks” from which proteins are made) helps to prevent micronutrient deficiencies stimulating simultaneously the metabolism of the plant. BIO-PROTAN®Microcomplex is a multifunctional product performing at the same time as fertilizer (organic nitrogen content), bio-stimulant (free amino acids promote rapid recovery in the event of stress) and deficiency corrector (balanced pool of micronutrients).

BIO-PROTAN®Microcomplex is suitable for soil and foliar application; however, we particularly recommend a foliar spray for plant fertilization and bio-stimulation. The bio-stimulant effect depends mainly from the small molecule size of the amino acids contained in the product. Amino acids are quickly absorbed by the plant leafs and tissues where they are used for the production of proteins and sugar, enzymes and plant growth regulators, increasing vegetative activity, stress resistance and quality of the agricultural production.

Beyond the positive influence on plant vegetative development and the recommendation to use Microfoliar amino acids particularly on stress situations, amino acids do interact with microelements as well. 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 microelements and amino acids in foliar spray solutions leads to an increase of micronutrient-treatment efficacy and reduces the fertilizer application dose. The higher the content of free amino acids, the higher the micronutrient efficiency.

BIO-PROTAN®Microcomplex provides microelements with high bioavailability. Apply Microcomplex on all types of crops whenever the plant is undergoing a period of stress or micronutrient deficiency. We particularly recommended a foliar application on fruit trees during critical crop-growing periods (budding, fruit set and development of the fruit) to increase plant photosynthesis activity and fruit set and to reduce the early “fruit drop-off”.

BIO-PROTAN®Microcomplex is almost chloride and nitrate free. The product is highly compatible in mixes, homogeneous and water-soluble without precipitation that could clog filters and nozzles of the irrigation system.

Guaranteed analysis (%w/w)

Organic nitrogen 3,8%
Ammonium nitrogen 0,2%
Total nitrogen (N) 4,0%
Organic carbon (C) 13%
Magnesium (MgO) 0,8%
Sulphur (S) 1,5%
Iron (Fe) 1%
Manganese (Mn) 0,1%
Zinc (Zn) 0,1%
Molybdenum (Mo) 0,001%
Boron (B) 1,5%
Complexing agents
Total amino acids 26%
Total amino acid / peptides min. 300 g/L
pH-value (1:10) 4 - 5
Density 1,18 - 1,20 kg/L

Directions for use

L/ha / application
L/ha / application
All crops whenever a stressful situation occurs and at critical times such as sprouting crop, fruit set, fruit development, etc. 2-3 L/ha 2-3 L/ha (anti stress)
Fruit trees, olive grove, wine and table grape fFrom pre-flowering to fruit enlargement,
3-6 applications every 10-15 days
2-3 L/ha 6-9 L/ha
Vegetable and industrial crops from fruit set to ripening every 7-10 days 2-3 L/ha 6-9 L/ha
Greenhouse crops from fruit set to fruit enlargement (vegetable crops) or during the whole crop cycle (leafy vegetables and flower crops), 3-6 applications every 10-15 days 100-200 ml/hl
(115-240 g/hl or 1-2 ml/L)
2-4 L/ha

Dilute BIO-PROTAN®Microcomplex 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.

In the greenhouse and when mixed with sulphur and trace elements apply the lowest recommended dose.

With the exception of the olive grove avoid use in conjunction with copper, stannous, sulphur 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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