Koral – liquid calcium (Ca) fertilizer enriched with amino acids.
Calcium is responsible for tissue strength and is a component of pectic substances which bind cell walls.
Activates enzymes, strengthens metabolism, participates in hormone regulation. Calcium regulates transport of carbohydrates to and from the cell, acid-base balance in cell, and amount of dry matter in cell. Calcium is needed differently for different agricultural plants. Calcium is mainly needed for vegetables and in gardens to improve fruit quality. Calcium stimulates activity of tuber bacteria in leguminous crops which have a higher need for calcium compared to other crops.
Fertilizers contain amino acids (AA), which activate photosynthesis, increase chlorophyll content and affect important vital plant functions.
L-Methionine is a precursor of ethylene, which affects pollination efficiency, pollen fertilization, is involved in synthesis of ethylene, tryptophan and auxins, and is irreplaceable in fertilization process.
Alanine and Valine improve quality of fruit.
Polysaccharides – plants can use them during cellular respiration to get extra energy and accumulate more sugar, which is needed to improve quality and for faster recovery after stress.


  • strengthens structure of the cell wall,
  • maintains elasticity, permeability and integrity of cell membrane,
  • participates in cell division and growth processes,
  • increases resistance of plants to rot (physiological),
  • strengthens resistance to droughts, pathogens and pests,
  • participates in the transmission of plant vital impulses (second messenger),
  • stimulates the metabolism of carbohydrates (sugars) in the plant, participates in their transport,
  • increases the viability of pollen and stimulates pollen growth,
  • improves protein synthesis,
  • stimulates plant growth and root development.
10 l
Amount % Amount g/l
Calcium (CaO) 14,0 215
Nitrate nitrogen (N-NO3) 8,0 120
Potassium (K2O) 5,0 77
Boron (B) 0,2 3,0
Polysaccharides 4,5 70
Amino acid L-Alanine 0,05 0,75
Amino acid L-Methionine 0,05 0,75
Amino acid L-Valine 0,05 0,75
pH (1:10 H2O) 7,2-7,8
Density 20C, g/ml 1,52-1,56

Koral can be used in mixtures with many fertilizers and pesticides (insecticides, fungicides). Do not use with products containing high amounts of copper (Cu), sulphur (S), mineral oils and with alkaline products (pH > 8), with herbicides and with seed treatment where the label states “do not mix with fertilizers“. Before mixing it is recommended to make a small amount of the mixture in order to check whether there is no sediment. It is recommended to spray in a small area in order to check whether there are no phytotoxic effects on plants.