Norotherm is a Biostimulant based on the bacterium Thiobacillus spp. and minerals that are used by the bacteria.

Prevents damage caused by low temperatures and frost. This is because it is frost resistant and lowers the freezing point of the plant. Thiobacillus produces rusticianin, oxaloacetic acid, and pyruvic acid, which give plants the ability to produce natural antifreeze proteins. There are sufficient amounts of minerals in the product just like those inside the enzymes. It also has a beneficial effect on production and its quality.

When applied to plants, the product is absorbed through stomata, stems and roots. It stimulates photosynthesis and the biochemical reactions of the plant’s natural Krebs cycle (citric acid cycle). It induces the production of its own antifreeze proteins and glycoproteins. These proteins interact with the water in the cells, thus reducing or stopping the process of ice nucleation (occurs when small ice crystals form on membrane proteins that act as nucleation sites. They facilitate the alignment of water molecules, which favours freezing), thus preventing cell breakage and death. The product increases a plant’s natural cold tolerance up to 70C below their natural tolerance.

Product content

  • Thiobacillus spp. 1×109 cfu/ml;
  • Trace elements;
  • Vegetable oil (glycerol – inert material) 20%;
  • Microorganisms: not derived from/or produced using GMOs.

Physical-chemical properties

Norotherm is presented as a emulsifiable concentrate.


Culture Dose
Strawberries 0.5%
Potato 0.5%
Apple, Pear-Tree 0.5%
Cherry, Nectarine, Apricot, Plum 0.5%
Vine 0.5%

Dosage and recommendations:

  • Strawberries: apply on the 7th and 17th day after planting, immediately before the flowers appear, and if conditions persist, repeat every 7-10 days. Apply to all foliage up to the point of runoff.
  • Potato: apply when the foliage appears and then repeat every 7-10 days.
  • Apple, Pear-Tree: apply 48 hours before frost. A scheme can be implemented with one treatment in the fall after the leaves fall and the second when the buds open for flowering and the appearance of fruits. It is repeated every 7-10 days in the spring.
  • Cherry, Nectarine, Apricot, Plum: apply 48 hours before frost. A scheme can be implemented with one treatment in autumn after leaf fall and one treatment in spring when the buds start to grow followed by another treatment during flowering.
  • Vines: a first application in autumn after leaf fall, followed in spring by an application 48 hours before frost, when the buds are opening and when the shoots are 10-15 cm.

Thiobacillus spp. 1x109 cfu/ml

Trace elements

Vegetable oil (glycerol – inert material) 20%