Preparation to increase temporary frost resistance of plants
For frosts

KRIO-FLOR is used to protect plants from periodic frosts. Its use has the effect of reducing damage to flower buds and flowers, thus limiting the damage caused by spring frosts in orchard and berry crops. The high efficacy of KRIO-FLOR is due to the appropriately selected composition of cryoprotectants, which act in an additive manner complementing each other.

Type I cryoprotectants cause a thickening of the cell sap through controlled, mild dehydration (dehydration) of the cells of the protected plant. Thus, they lower the freezing point of the cell sap and reduce the likelihood of mechanical damage to plant tissues from ice crystals forming inside the cells at sub-zero temperatures. Water escaping from the plant comes into contact with type II cryoprotectants which causes a gradual release of heat, providing the plant with additional protection.

The use of KRIO-FLOR does not require withdrawal or precaution, making it completely safe for humans, animals and the environment.



In order to protect the plants from damage, they should be sprayed thoroughly 10-12 hours before the expected frost with an appropriate amount of the product.

Application rate:

  • field crops: 250-300 litres
  • orchards and berry crops: 450-500 litres

If, for legitimate reasons, the use of the liquid must be greater than 500 litres per hectare, the quantity of KRIO-FLOR should be increased proportionally.

Before pouring the preparation into the filled sprayer, shake it several times before opening, which will eliminate any possible stratification of the liquid.

The sprayer must have the agitator running when pouring in the preparation.

KRIO-FLOR should not be mixed with other preparations.

Required amount of KRIO-FLOR depending on the frost degree:

  • -1o C – 0.9L/ha
  • -2o C – 1.0L/ha
  • -3o C – 1.2L/ha
  • -4o C – 1.3L/ha
  • -5o C – 1.4L/ha
  • -6o C – 1.7L/ha

The dosage depends on the amount of frost expected and ranges from 0.9 to 1.7 litres per ha of protected crop. In order for the application of KRIO-FLOR to be effective, it must be carried out 10 to 24 hours before the expected frost at physiological temperatures, i.e. at temperatures at which the vital functions of the plants are still fully preserved.

Application effects:

The protective efficacy of the product is determined by the timing of the treatment and the choice of the dose depending on the amount of frost expected. Incorrectly setting the temperature, and therefore the dose of the preparation, severely limits the protective effect of the preparation and, in extreme cases, rules it out altogether.

Influence of KRIO-FLOR dosage on frost resistance of selected plants:

Sample plant species selectedTemperature -6o CTemperature -7o C
Application rateApplication rate
Apple tree, blossoms6%25%64%64%3%17%56%55%
Apple tree, primordia1%20%48%48%0%2%40%40%
Cherry blossoms7%30%65%63%3%19%60%59%
Black currant blossoms3%21%63%63%0%13%54%53%

Cryoprotectants can be divided into three groups: penetrating cryoprotectants – those that are able to penetrate the cell membrane, those that do not have this ability and those that only have the ability to penetrate under certain conditions.

Cells subjected to slow cooling with certain non-penetrating protectants undergo fairly strong (but controlled) dehydration, resulting in a flow of water from the cell to the environment (outside the plant) by osmosis. The loss of water in the cell is a critical moment in freezing. It reduces the likelihood of ice crystals forming inside the cells, which, as they grow, destroy its structures. Once the externally displaced water has come into contact with another – characterised by a strong and persistent transfer – non-penetrating cryoprotectant, heat is gradually released, providing a further protective effect on the plant.

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